PLEASE HELP!!!!
Which choices are equivalent to the expression below? Check all that apply.
5^2 • 5^9

PLEASE HELP!!!!Which Choices Are Equivalent To The Expression Below? Check All That Apply.5^2 5^9

Answers

Answer 1

Answer:

D & E

The ones you chose are correct.


Related Questions

Entomologists are biological scientists who study insects. Entomologists studying tree crickets have found that they chirp at different rates depending on the temperature. The number of chirps per minute, C , that the tree cricket makes is linearly dependent on the temperature, T , in Fahrenheit. The crickets do not chirp at all if the temperature is 40 degrees and at 60 degrees they chirp about 92 times per minute.

A) Express the number of chirps, C , as a function of the temperature, T . Use function notation, and round decimals to one decimal place.

B) How many chirps per minute will crickets make at 75 degrees?

Answers

Step 1

Find the rate change at which the crickets are chirping.

Step 2

Find the function

Movie executives want to know if a movie watcher’s heart rate increases when they watch certain types of movies. Subjects in the experiment were given a free movie ticket and randomly assigned to watch one of four movies: an action-adventure film, a horror film, a romantic comedy, or an animated children’s film. They measured the average heart rate of all subjects while watching the assigned film.

Which of the following is the most appropriate statistical test to use to test if the average heart rate of the movie watchers was different for the four types of movies?

A. Matched pairs t-test

B. Chi-squared test for independence

C. ANOVA

D. Two-sample t-test

E. Inference for regression

Answers

Answer:

The correct option is C

Step-by-step explanation:

ANOVA is the correct option because it can be used to carry out comparison of average of more than  two groups  

MARKING BRAINLIEST!!!

Answers

Answer:quadratic formula

Step-by-step explanation:

Answer:

Completing the square.

Step-by-step explanation:

x^2-8x+(-4)^2=22 can be rewritten as (x-4)^2=22. therefore, the best method would be completing the square.

If parallelogram ABCD was reflected over the y-axis, reflected over the x-axis, and rotated 180°, where would point A' lie?

[Hint: Place your coordinates in the blank with no parentheses and a space after the comma in the form: x, y]

Parallelogram ABCD is shown.
A is at negative 4, 1.
B is at negative 3, 2.
C is at 0, 2.
D is at negative 1, 1.

Answer:

(Fill in the blank)

Answers

Answer:

-4, 1

Step-by-step explanation:

A (-4, 1)

reflected over y-axis –> (4, 1)

reflected over x-axis –> (4, -1)

rotated 180º –> (-4, 1)

What is the product?
5/
3
23
42
52
4
54
5
44

Answers

Answer:

5,10,15,20,25,30,25,40,45,50,55,

Step-by-step explanation:

factoring area models x2 + 6x + 5

Answers

Wiekoe is the time of time to you

Answer:

factored is (x+1)(x+5)

Step-by-step explanation:

gradpoint

6i4+6i3−2i2+−49−−−−√ rewritten in a+bi form

Answers

Answer:

[tex]8+i[/tex]

Step-by-step explanation:

We are given that an expression

[tex]6i^4+6i^3-2i^2+\sqrt{-49}[/tex]

We have to rewrite in the form of a+bi

[tex]6(i^2)^2+6i^3-2i^2+\sqrt{-49}[/tex]

We know that

[tex]i^2=-1[/tex]

[tex]i^3=-i[/tex]

[tex]\sqrt{-1}=i[/tex]

Using the identity

Then, we get

[tex]6-6i-2(-1)+7i[/tex]

[tex](6+2)+(7-6)i[/tex]

[tex]8+i[/tex]

This is required form of a+ib

when you multiply my digits, the product is 20. When you add my digits the sum is a square number. What number am i

Answers

Answer:5 and 4

Step-by-step explanation:

5*4=20

5+4=9 which is a square number

A Pew Internet poll asked cell phone owners about how they used their cell phones. One question asked whether or not during the past 30 days they had used their phone while in a store to call a friend or family member for advice about a purchase they were considering. The poll surveyed 1003 adults living in the United States by telephone. Of these, 462 responded that they had used their cell phone while in a store within the last 30 days to call a friend or family member for advice about a purchase they were considering.
A) Identify the sample size and the count.
B) Calculate the sample proportion.
C) Explain the relationship between the population proportion and the sample proportion.

Answers

Answer:

Given:

n = 1003

[tex] p' = \frac{462}{1003} = 0.4606 [/tex]

q = 1 - 0.4606 = 0.5394

a) The sample size and count.

Here the sample size is the number that took part in the poll. It is denoted as n = 1003.

The count is the number that answered yes. Count = 462

b) The sample proportion.

The formula for sample proportion is: [tex] p' = \frac{x}{n} [/tex]

Therefore, sample proportion =

[tex] p' = \frac{462}{1003} = 0.4606 [/tex]

c) The relationship between population proportion and sample proportion.

Since the sample size is greater than 30 (n>30), the sample size is large. Hence, for a large sample, the population proportion is approximately equal to the sample proportion.

This means the population proportion, p = 0.4606

Answer:

A) Sample size n=1003

Count x=462

B) Sample proportion p=0.46

C) The population proportion can be estimated with a confidence interval, with the information given by the sample proportion.

The 95% confidence interval for the population proportion is (0.429, 0.491).

Step-by-step explanation:

A) The sample size include all the adult that answer the poll. The sample size is then n=1003.

The count is the number of adults that answer Yes in this case. The count is x=462.

B) The sample proportion can be calculated dividing the count by the sample size:

[tex]p=\dfrac{x}{n}=\dfrac{462}{1003}=0.46[/tex]

C) The population proportion is not known. It can only be estimated with the information given by samples of that population. The statistical inference is the tool by which the sample information can be used to estimate the population characteristics.

With the sample proportion p we can estimate a confidence interval for the population proportion.

We can calculate a 95% confidence interval.

The standard error of the proportion is:

[tex]\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.46*0.54}{1003}}\\\\\\ \sigma_p=\sqrt{0.00025}=0.0157[/tex]

The critical z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

[tex]MOE=z\cdot \sigma_p=1.96 \cdot 0.0157=0.031[/tex]

Then, the lower and upper bounds of the confidence interval are:

[tex]LL=p-z \cdot \sigma_p = 0.46-0.031=0.429\\\\UL=p+z \cdot \sigma_p = 0.46+0.031=0.491[/tex]

The 95% confidence interval for the population proportion is (0.429, 0.491).

We have 95% that the population proportion is within this interval

Alex has 3 more quarters than dimes in his pocket, for a total of $5.25.
Which equation could be used to determine the number of dimes, x, in his.
pocket? *

Answers

Answer:

the equation used to determine the number of dimes in his pocket is an "algebraic equation" (3/4)x = 5.25

and the value of x = 7

Step-by-step explanation:

We are being told that:

Alex has 3 more quarters than dimes in his pocket, for a total of $5.25.

Let the value for the dimes in his pocket be x:

So he has 3 more quaters than x

We know that a quarter is 1/4

3 more quaters than x = (3/4) x

(3/4)x = 5.25

3x = 5.25 * 4

3x = 21

x = 21/3

x = 7

Thus, the equation used to determine the number of dimes in his pocket is an "algebraic equation" (3/4)x = 5.25

and the value of x = 7

a bag contains a mixture of almonds walnuts and cashews there's an equal quantity of each nut. If a nut is chosen randomly out of the bag what is the probability that an almond will be selected or that a cashew will be selected

Answers

Answer:

P(either almond or cashew) = ⅔

Step-by-step explanation:

We are told that the bag contains a mixture of almonds walnuts and cashews of equal number.

Since the 3 nuts are equal in number, they will have a ratio of 1:1:1.

So, when a nut is chosen randomly,

Probability of choosing almond = 1/3

Probability of choosing cashew = 1/3

Thus,

Probability of choosing either almond or cashew in a random selection will be the sum of their individual probability.

So,

P(either almond or cashew) = ⅓ + ⅓ = ⅔

Nancy hears a report that the current national average price of gasoline is $3.14. She averages the prices of stations near her home.she finds the average price of gas to be $2.95. Why are the averages different?

Answers

Answer:

Nancy's ambient locality might be having more suppliers, higher supply of Gasoline

Step-by-step explanation:

National average price of gasoline = $3.14

Stations near Nancy's home have an average price = $2.95

Gasoline price near Nancy's house is lesser than national average price level. Number of gasoline stations near her house might be more. It implies increase in its supply. This leads to competition among sellers & reduces the price level.

The range of F(x)= 7•4^x is all positive real numbers

Answers

Answer:

its true

Step-by-step explanation:

pls help me with this and show any work

Answers

Answer: 9.5 (D.)

Step-by-step explanation:

SOCAHTOA

the sin of an angle is equal to the opposite side over the hypotenuse.

angle: 32

opposite side: x

hypotenuse: 18 m

1. sin32 = x/18

2. 18(sin32) = x

3. 9.5 = x

if you are confused with how it went from 18(sin32) to 9.5, you can plug 18(sin32) into your calculator.

A factory makes bicycles.Out of 300 bicycles, 2 were found to have defective brakes
A.what is the experimental probability that the next bike manufactured will have defective brakes?
B. Predict how many bikes out of 2,100 will have defective brakes.

Answers

Answer:

A. 2/300=1/150

B.1/315,000

Step-by-step explanation:

B. 1/150*2100=1/315000

Prove
sec2x - tan2x = tan(45-x)
Pls Help!!!TQ

Answers

Step-by-step explanation:

sec(2x) − tan(2x)

Write in terms of sine and cosine:

1/cos(2x) − sin(2x)/cos(2x)

(1 − sin(2x)) / cos(2x)

Use double angle formulas:

[ 1 − 2 tan x / (1 + tan²x) ] / [ (1 − tan²x) / (1 + tan²x) ]

Multiply by reciprocal:

[ 1 − 2 tan x / (1 + tan²x) ] × [ (1 + tan²x) / (1 − tan²x) ]

Distribute 1 + tan²x:

(1 + tan²x − 2 tan x) / (1 − tan²x)

Factor:

(1 − tan x)² / ((1 − tan x) (1 + tan x))

Simplify:

(1 − tan x) / (1 + tan x)

Rewrite using 1 = tan(45°):

(tan(45°) − tan x) / (tan(45°) + tan x)

Use angle difference formula:

tan(45° − x)

There are three choices for a drink three choices for an entree and two choices for dessert find the total number of possible outcomes of ordering one drink one entree and one dessert

Answers

Answer:

It is 18

Step-by-step explanation:

Hope this helps have a wonderful day

The possible outcomes of ordering be 18.

What is combination?

A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter.

Drink = 3 choice

Entree= 3 choices

Dessert = 2 choice

So, Using tree method

drink              1                                      2                            3

Entree         1      2      3                   1      2      3                 1      2     3  

Dessert    1  2   1  2   1  2              1  2  1  2  1  2              1  2  1  2  1  2

So, the possible outcomes of ordering be 18.

Learn more about combination here:

https://brainly.com/question/26852614

#SPJ2

A study randomly assigned adult subjects to one of three exercise treatments: (1) a single long exercise period five days per week; (2) several ten-minute exercise periods five days per week; and (3) several ten-minute periods five days per week using a home treadmill. The study report contains the following summary statistics about weight loss (in kilograms) after six months of treatment: Does the type of exercise treatments influence weight loss significantly? Use α = 5%. Treatment Mean Std. Dev. n Long periods 10.2 4.2 10 Multiple short periods 9.3 4.5 10 Multiple short periods with treadmill 10.2 5.2 10 The test statistic is:

Answers

Answer:

Step-by-step explanation:

Hello!

For this study adult subjects were randomly assigned to three different exercise treatments establishing three different groups:

Group 1: Single long exercise period five days per week

Group 2: Several 10' exercise periods five days per week

Group 3: Several 10' exercise periods five days per week using a home treadmill

All subjects were weighed before and after 6 months of training and their weight loss was determined.

The objective of this study is to determine if there is any difference between the treatments, meaning, if the weight loss is the same regarding the type of exercise or if the type of exercise has some influence over it.

To test this you have to conduct an ANOVA, with the hypothesis:

H₀: μ₁= μ₂= μ₃

H₁: At least one μi differs from the others. ∀ i=1, 2, 3

α: 0.05

The statistic is:

[tex]F= \frac{MS_{Tr}}{MS_{Er}} ~~F_{k-1; n-k}[/tex]

Normally it is better to have the raw data to conduct the analysis using statistical software, but it is not impossible to calculate the statistic using the descriptive statistics for each group.

As you know the statistic is calculated as the ratio between the mean square of the treatments (between groups) and the mean squares of errors.

Each means square is calculated as the sum of squares by the degrees of freedom of the category: SS/Df

So first you need to determine the SS and Df of treatments and errors, then the MS and finally the value of F.

Treatments:

> The degrees of freedom between treatments are k-1 (k represents the number of treatments):

DfTr: 3-1= 2

>The sum of squares is:

SSTr: ∑ni(Ÿi - Ÿ..)²

Ÿi= sample mean of sample i ∀ i= 1,2,3

Ÿ..= grand mean is the mean that results of all the groups together.

So the Sum of squares of treatments (SSTr) is the sum of the square of the difference between the sample mean of each group and the grand mean.

To calculate the grand mean you can sum the means of each group and dive it by the number of groups:

Ÿ..= (Ÿ₁ + Ÿ₂ + Ÿ₃)/ k = (10.2+9.3+10.2)/3= 29.7/3= 9.9

SSTr= (Ÿ₁ - Ÿ..)² + (Ÿ₂ - Ÿ..)² + (Ÿ₃ - Ÿ..)²= (10.2 - 9.9)² + (9.3 - 9.9)² + (10.2 - 9.9)²= 0.54

> The Means Squares is:

MSTr= SSTr/DFTr= 0.54/2= 0.27

Errors

>Degrees of freedom of error DfEr= N-k Where N is the total of observations of the experiment (N= n₁+n₂+n₃) and k is the number of treatments.

DfEr= N-k= 30-3= 27

>The mean square error (MSEr) is the estimation of the variance error (σ[tex]_{e}^2[/tex] → S[tex]_{e}^2[/tex]), you have to use the following formula:

[tex]S_{e}^2= \frac{(n_1-1)S^2_1+(n_2-1)S_2^2+(n_3-1)S^2_3}{N-k}= \frac{(9*17.64)+(9*20.25)+(9*27.04)}{27}= \frac{584.37}{27}= 21.643[/tex]

Finally you calculate the statistic:

[tex]F_{H_0}= \frac{MS_{Tr}}{MS_{Er}}= \frac{0.27}{21.643}= 0.012[/tex]

This test is One-tailed right, meaning that you'll reject to high values of the statistic and there is one critical value:

[tex]F_{k-1;N-k;1-\alpha }= F_{2;27;0.95}= 3.35[/tex]

Using the critical value approach, the decision rule is:

If [tex]F_{H_0}[/tex] ≥ 3.35, reject the null hypothesis.

If [tex]F_{H_0}[/tex] < 3.35, do not reject the null hypothesis.

The calculated value is less than the critical value, the decision is to not reject the null hypothesis.

So at a 5% significance level, there is not enough evidence to conclude that the treatments influence significantly in weight loss. The population mean weight loss is the same for the treatments "Single long exercise period five days per week", "Several 10' exercise periods five days per week" and "Several 10' exercise periods five days per week using a home treadmill"

I hope this helps!

What is the combined probability of getting a heads when flipping a coin and
an odd number when spinning a spinner with 4 equal parts numbered 1 to 4?
OA)
B)
ANNI -
o
100

Answers

Answer:

25%

Step-by-step explanation:

50% x 50%

Answer:

A. 1/5

Step-by-step explanation:

got on edge

Last Thursday was costume day at Emmet's school. 108 out of the 120 students at the school wore a costume. What percentage of the students wore a costume?

Answers

Answer:

90%

Step-by-step explanation:

100%=120 pupils

           108pupils

 108 x 100= 10800/120=90 %

Ted likes to run long distances. He can run 20 km in 95 minutes.He wants to know how many kilometers he will go if he runs the same pace for 285 minutes. How far will Ted run in 285 minutes

Answers

You just have to cross multiply. 20 x 285 = 5700. 5700 / 95 = 60.

He will run 60km
Ted runs in 95 minutes= 20 km
Ted runs in 1 minute= 20/95
Ted runs in 285 minutes= 20/95*285= 60km

Li is using a cone shaped cup with a diameter of 7 and 3/8 cm and a height of 10 cm. Find the total volume of the cup. Round to the nearest tenth.

Answers

Answer:

The volume of the cup is of 142.2 cubic centimeters.

Step-by-step explanation:

The cone volume is given by the following equation:

[tex]V = \frac{\pi r^{2}h}{3}[/tex]

In which r is the radius, which is half the diameter, and h is the height.

In this question:

Dimensions in cm, so the volume will be in cubic centimers.

Height of 10 cm, so [tex]h = 10[/tex]

Diameter of [tex]7 + \frac{3}{8} = \frac{7*8 + 3}{8} = \frac{59}{8} = 7.375[/tex]

So the radius is [tex]r = \frac{7.375}{2} = 3.6875[/tex]

Volume of the cup:

[tex]V = \frac{\pi*(3.6875)^{2}*10}{3} = 142.4[/tex]

The volume of the cup is of 142.2 cubic centimeters.

An electronics store offers students a discount
of 10% on purchases of computers. They
estimate that of computer sales are to
students. The average sale per customer is $498
and the store's profit is $80 before the discount.
What is the expected profit on the sale of a
computer?

show work​

Answers

Answer:

83.9357% increase for the buyer

Step-by-step explanation:

A group of kinesiology students wanted to know if individuals who took group fitness classes lost more weight than individuals who worked out on their own. They obtained a sample of 70 individuals who wanted to lose weight. The first 35 participants to show up for the study were assigned to the group fitness condition; they attended a group fitness class twice a week. The second 35 participants were assigned to the individual workout condition; they worked out alone in the gym twice a week. Change in weight over a 15 week period was recorded and compared for the two groups.

Is this an observational or experimental study?

Answers

Answer:

Experimental.

Step-by-step explanation:

It is an independent measure design. Multiple experimental groups are used in an independent measures design, which is a research method and participants are only in one group. Each participant is only in one condition of the independent variable during the experiment.

A sphere has a diameter of 18 inches. What is the volume of this sphere? Use ​ ≈ 3.14 and round your answer to the nearest tenth.

Answers

Answer:

3053.63 cu. inches

Step-by-step explanation

Volume = 4/3 pi r^3

Answer:

[tex]v \: \: ≈

3053.62 {in}^{3}

[/tex]

Step-by-step explanation:

[tex]v = \frac{4}{3} \pi {r}^{3} \\ = \frac{4}{3} \times \pi \times {9}^{3} \\ ≈

3053.62806

[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

solve for c 45 = 3c

Answers

Answer:

c=15

Step-by-step explanation:

45=3c,divide

c=15

Find the product.

y4 · y6

Answers

The answer is [tex]y^{4+6}[/tex] = [tex]y^{10}[/tex]

The answer is y10 because they are common so al you have to do is multiply and bring the y down

Factor completely. 25+70x+49x^2

Answers

Answer:

(5+7x)^2

Step-by-step explanation:

25+70x+49x^2

This is a perfect square trinomial

a^2 +2ab + b^2 = (a+b)^2

5^2 *2*5*7x+ (7x)^2 = (5+7x)^2

Solve

x^2-4=77

E2020

Answers

Answer:

Step-by-step explanation:

Answer:

x = 9  or  x = -9

Step-by-step explanation:

x² - 4 = 77

then

x² - 4 + 4 = 77 + 4

then

x²  = 81

then

x² - 81 = 0

then

x² - 9² = 0

then

(x - 9)(x + 9) = 0

then

x - 9 = 0  or  x + 9 = 0

then

x = 9  or  x = -9

__________________________

:)

suppose you roll two dice. find the probability of rolling a sum of 11.​

Answers

Answer:

1/18

Step-by-step explanation:

There are 36 different possible combinations. There are only two ways of rolling a sum of 11.

2/36 = 1/18

Other Questions
Compare the lives of black Americans prior to the civil rights movement to the lives of black South Africans living under apartheid. How were their experiences similar or different? What human activities lead to soil erosion? Question text A hypothesis is Find an angle 0 coterminal to 801, where 0 < 0 < 360. Who eventually took over Greece after its decline?PersiaBabylonSpainRome Which of these statements is the best counter argument to the claim that sports celebrities are good role models A. Many sports celebrities give away money and are involved with charitable causes and foundationsB. Many sports celebrities make poor decisions and become involved in public scandalsC. Many sports celebrities have struggled and worked hard to achieve their success D. Many sports celebrities live healthy and active lifestyles to maintain their physical conditionNEED ANSWER ASAP The tape diagram represents an equation. WILL GIVE BRAINLIEST. Billy ordered a pizza with a crust that is 10 inches long. What is the area of the pizza? Select a type of renewable energy. Compare it to fossil fuels by explaining two pros and two cons for its implementation on a large scale. Maintain an environmental focus (do not just give economic reasons). How many times should she expect to roll a number that is greater than 4 Select the correct answer...Read the last stanza of Robert Frosts poem The Road Not Taken. Why is it significant that the two roads diverged?I shall be telling this with a sighSomewhere ages and ages hence:Two roads diverged in a wood, and II took the one less traveled by,And that has made all the difference. from "The Road Not Taken" by Robert FrostA. The speaker is recalling, "with a sigh," how difficult it had been for him to choose the more traveled or the less traveled of the two roads. The forked road is a metaphor for the inherent duality in the natural world.B. One of the forks in the road represents the speaker in his youth when he chose a road; the other stands for the speaker "ages and ages hence." The forked road is a metaphor for the many contradictions found in nature.C. The speaker is relieved that he chose the road of moral living over one of temptation and ruin, which would have come from the other path.D. The speaker is imagining what it might be like to describe his choice of a life path after he has taken that path to close to its end. A bag contains 2 red, 5 blue, and 7 yellow marbles. Find the probability of drawing a yellow or a red. In TUV, t = 410 cm, U=27 and V=78. Find the length of v, to the nearest 10th of a centimeter. It is known that one of the factors of -24 is negative. How can it be determined if the chosen factor was the correct negative factor?A) Check by adding the two binomial factors. If the middle term is -10x, not 10x, switch the signs of the factors of -24.B) Check by adding the two binomial factors. If the middle term of 10x, not -10x, switch the signs of the factors of -24.C) Check by multiplying the two binomial factors. If the middle term is -2x, not 2x, switch the signs of the factors of -24.D) Check by multiplying the two binomial factors. If the middle term is 2x, not -2x, switch the signs of the factors of -24. If 500.0 mL of 0.450 M sodium phosphate is reacted with an excess of iron (II) nitrate solution, how many grams of iron (II) phosphate are produced? Someone plz help me!! like ASAP!!What tone is conveyed in this poem through the speaker's choice of words such as "unconquerable," "unbowed," "unafraid," "master," and "captain"? A)comical and witty B)tenacity and dignityC)confident and cheerful D)resignation and humilityAlso, I rlly need friends!! I'm a pretty awesome friend too so- LETS BE FRIENDSS Select all of the following functions that you think a plant would need to carry out in order to survive.-grow-take in nutrients from the environment-reproduce-respond to the environment-transport materials through their bodies-produce chemicals HELP PLSSS I IS TTTTTTIIIIIIMMMMMMEEEEEEEEDDDDDDDDThe United States gave money to Europe under the Marshall Plan to help EuropeA) recover from the war so it could resist communism.B) survive the Great Depression so it could resist communism.C) rebound from the war so it could contain German power.D) expand its influence to other continents in the world.100 Points and brainliest to who answers first with the correct answer (which idk what it is 0-o) PLEASE HELP! URGENT!The equation and graph of a polynomial are shown below. The graph reaches its maximum when the value of x is -2. What is the y-value of this maximum?y = -x^2-4x-1 ASAP PLEASE!!! WILL GIVE BRAINLIEST!!Tracy is responsible for checking the electronic layout and files of a printing project. What does she work as?A. print press operatorB. prepress managerC. print estimatorsD. binding operatorE. print shop manager