if a is a positive number then -a^6 is

Answers

Answer 1
-a^6 is a positive number.
two negatives create a positive, so just imagine 6 -a’s, and divide each into 3 groups of 2. each of them have best friends to make it positive, as this number is even.

Related Questions

You can afford $1,000 per month as a house payment. If you can get a home loan at 5.3% interest for 15 years (paid monthly), how expensive of a home can you afford? In other words, what amount loan can you pay off with $1,000 per month for 15 years?

Answers

Answer:

You can afford $1,000 per month as a house payment.

You can get a home loan at 5.3% interest for 15 years (paid monthly).

Then, after 15 years, the price of house that you can afford would be:

A x (1 + (5.3/100)/12)^(12 x 15) = 2.2 x A

With payment of 1000$ per month in 15 years, then we have

2.2 x A = 1000 x 12 x 15 = 180000

=> The price of house that you can afford now, would be:

A = 180000/2.2 = 81818.2$

Hope this helps!

:)

what is the circumference of this circle?

Answers

Answer:

12π

Step-by-step explanation:

C = Dπ

C = 12π

Answer:

37.68

Step-by-step explanation:

Trust me

Make me brainleist

As an estimation we are told £3 is €4.
Convert €52 to pounds.

Answers

Answer:

£69.33

Step-by-step explanation:

4/3=1.33333333333 so that 52*1.33333333333 would convert  52 euros into 52 pounds

Which of the ratios below is equivalent to 1:3? Select all that apply.
A) 4:12
B) 6:18
C) 6:2
D) 8:24
E) 5:8

Answers

Answer:

[tex] \: \: \: \: \: 1 : 3 \\ = 4 : 12 \\ = 6 : 18 \\ = 8 : 24 \\ [/tex]

hope this helps

Answer:

Answer:

4:12

6:18

8:24

hope this helps

Step-by-step explanation:

please help with this

Answers

Answer:

Width = 3x^2 + 5

Step-by-step explanation:

Area = Length*Width

(6x^2+10)=2*Width     Divide both sides by 2

3x^2+5 = Width

Answer:

3x^2 +5

Step-by-step explanation:

Take the pink area 6x^2 and divide by 2

6x^2/2 = 3x^2

Take the blue area and divide by 2

10/2 = 5

Add them together to find the width

The width is 3x^2 +5

PLEASE HELP ?

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m?

Answers

Step-by-step explanation:

-2m - 5m - 8 = 3 + (-7) + m

Solving like terms

-7m - 8 = 3 - 7 + m

-7m - 8 = - 4 + m

Option 2 4 and 5 are equivalent

Will mark u brainliest
15 points!!!!
Class 9 math

Answers

Answer:

[tex]\frac{3375}{512}[/tex] or ≈6.59

Step-by-step explanation:

We can first begin by simplifying each of the numbers with exponents. Recall that in a fraction exponent, the numerator is the power, while the denominator is the root.

Take [tex]25\frac{3}{2}[/tex] for example. The '2' in the fraction means we must take the square of 25. √25 = 5.

The '3' in the fraction means we take the power, which means we must cube '5'.

5³ = 125. Therefore, [tex]25\frac{3}{2}[/tex]  = 125. Use this process for the other numbers:

[tex]25^{\frac{3}{2} } = 125\\243^{\frac{3}{5} } = 27\\16^{\frac{5}{4} } = 32\\ 8^{\frac{4}{3} } = 16[/tex]

The new fraction would look like:

[tex]\frac{125 * 27}{32 * 16}[/tex]

Which simplifies to:

[tex]\frac{3375}{512}[/tex] or ≈6.59

Answer:

Step-by-step explanation:

(25) raise to 3/2 = (5^2) raise to 3/2 and 2 gets cancelled when the bracket is opened which leaves 5^3.

(243) raise to 3/5 = (3^5) raise to 3/5 and 5 gets cancelled when the brackets are opened which leaves 3^3.

(16) raise to 5/4 = (2^4) raise to 5/4 and 4 gets cancelled when the bracket is opened which leaves 2^5.

(8) raise to 4/3 = (2^3) raise to 4/3 and 3 gets cancelled when the brackets are opened which leaves 2^4.

5^3 * 3^3 divided by 2^5 * 2^4

= (5 x 3)^ 3 / 2^5+4                   [∵a^m x b^m = (ab)^m] & [a^m x a^n = a^m+n]

15^3 / 2^9

This when simplified gives 6.591.

So,  15^3 / 2^9 is approximately equal to 6.59

PLS MARK IT AS BRAINLIEST

​A repeated-measures study comparing two treatments with n = 4 participants produces MD = 2 and SS = 75 for the difference scores. What is the estimated standard error for the sample mean difference? Group of answer choices ​25 ​25/4 = 6.25 ​5 2.5​

Answers

Answer:

2.5

Step-by-step explanation:

n = 4 participants

MD = 2, SS = 75

Estimated standard error, s² =[tex]\frac{SS}{n-1}[/tex]

                                             = [tex]\frac{75}{4-1}[/tex] = 25

Standard error = [tex]\sqrt{\frac{Estimated standard error}{n} }[/tex] = [tex]\sqrt{\frac{25}{4}}[/tex] = 2.5

Simplify to create an equivalent expression.
8(10 - 6q) + 3(-7q - 2)​

Answers

Answer:

27q + 74

Step-by-step explanation:

=80 - 48q -21q - 6

=27q + 74

On a map, 4 inches represents an actual distance of 24 miles. If the actual distance between two cities is 126 miles, how many inches apart will the two cities be on the map

Answers

Answer:

21 inches

Step-by-step explanation:

1 inch = 6 miles

126/6 = 21

Find the volume of the cylinder below (using 3.14 for p).

- Include the equation you are using.

- Show all work to get your answer.

- Round your answer to the nearest tenth.

Make sure to label your answer appropriately.

Answers

Answer:  803.1  m^3

==========================================================

Work Shown:

d = 8.4 is the diameter

r = d/2 = 8.4/2 = 4.2 is the radius

h = 14.5 is the height

V = pi*r^2*h = volume of cylinder

V = pi*(4.2)^2*14.5

V = pi*255.78

V = 255.78pi = exact volume in terms of pi

V = 255.78*3.14

V = 803.1492

V = 803.1  ... round to one decimal place

The units for the volume are in cubic meters which we can abbreviate as "m^3"

In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 5000 subjects randomly selected from an online group involved with ears. 717 surveys were returned. Use a 0.01 significance level to test the claim that the return rate is less than 15%.

Answers

Answer:

As the P-value (0.086) is greater than the significance level (0.01), the effect is  not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the return rate is less than 15%.

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that the return rate is less than 15%.

Then, the null and alternative hypothesis are:

[tex]H_0: \pi=0.15\\\\H_a:\pi<0.15[/tex]

The significance level is 0.01.

The sample has a size n=5000.

The sample proportion is p=0.143.

[tex]p=X/n=717/5000=0.143[/tex]

The standard error of the proportion is:

[tex]\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.15*0.85}{5000}}\\\\\\ \sigma_p=\sqrt{0.000026}=0.005[/tex]

Then, we can calculate the z-statistic as:

[tex]z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.143-0.15+0.5/5000}{0.005}=\dfrac{-0.007}{0.005}=-1.366[/tex]

This test is a left-tailed test, so the P-value for this test is calculated as:

[tex]P-value=P(z<-1.366)=0.086[/tex]

Answer:

[tex]z=\frac{0.1434 -0.15}{\sqrt{\frac{0.15(1-0.15)}{5000}}}=-1.307[/tex]  

Now we can calculate the p value with the following probability:

[tex]p_v =P(z<-1.307)=0.0956[/tex]  

For this case the p value is lower than the significance level provided of 0.1 so then we can reject the null hypothesis and we can conclude that the the return rate is significantly less than 15%.

Step-by-step explanation:

Information provided

n=5000 represent the random sample taken

X=717 represent the surveys returned

[tex]\hat p=\frac{717}{5000}=0.1434[/tex] estimated proportion of urvyes returned

[tex]p_o=0.15[/tex] is the value to verify

[tex]\alpha=0.01[/tex] represent the significance level

z would represent the statistic

[tex]p_v[/tex] represent the p value

System of hypothesis

We want to verify if the return rate is less than 15% the system of hypothesis are.:  

Null hypothesis:[tex]p \geq 0.15[/tex]  

Alternative hypothesis:[tex]p < 0.15[/tex]  

The statistic is given by:

[tex]z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}[/tex] (1)  

Replacing the info we got:

[tex]z=\frac{0.1434 -0.15}{\sqrt{\frac{0.15(1-0.15)}{5000}}}=-1.307[/tex]  

Now we can calculate the p value with the following probability:

[tex]p_v =P(z<-1.307)=0.0956[/tex]  

For this case the p value is lower than the significance level provided of 0.1 so then we can reject the null hypothesis and we can conclude that the the return rate is significantly less than 15%.

Multiple choice question for geometry

Answers

Answer:

The first option

Step-by-step explanation:

You need to find the average of the y-coordinates because you are looking for the y-value of the midpoint

Answer:

The first one

Step-by-step explanation:

Hope this helped

Carol rolled a dice 150 times she rolled a 6 29 times use carols data to estimate the probability of rolling a six with this dice give your answer as a fraction​

Answers

29/150
This is because she rolled a 6 29 times out of a possible 150 times

What’s the correct answer for this?

Answers

Answer:

D.

Step-by-step Explanation:

In the attached file

^^^^ the correct answer to this is d

Kira unravels a shirt to get blue thread. From each centimeter (cm) of the shirt, Kira gets 231 cm of thread. She unravels 7cm of the shirt.

How much thread does Kira get ?

Answers

Answer:

1617 cm of thread.

Step-by-step explanation:

We are told that the equivalence would be that for each cm of shirt Kira gets 231 cm of thread, therefore it would be:

231 cm thread / 1 cm shirt

they tell us that she managed to remove 7 cm of shirt, therefore:

7 cm shirt * 231 cm thread / 1 cm shirt = 1617 cm thread

Therefore Kira obtained 1617 cm of thread.

Answer:

Kira gets 1,617

Step-by-step explanation:

In Khan word problems 4 grade divsion TRUST ME I GOT IT RIGHT!! THANK U

Mark ordered a square pizza that has a side length of 12 inches Rodney ordered a round pizza with a 12 inch diameter each of them paid seven dollars for their pizza you got the better deal

Answers

Answer:

Square pizza is the better deal.

Step-by-step explanation:

The better deal will be the one that has larger area of pizza. So, find the area of pizza in the case of square pizza and in the case of round pizza.

Below is the calculation of area of pizzas.

[tex]\text{Area of square pizza} = (Side)^{2} \\\text{Area of square pizza} = (12)^2 \\\text{Area of square pizza} = 144 \ in^2 \\[/tex]

[tex]\text{Now area of round pizza.} \\\text{ The area of round pizza} = \pi r^{2} \\\rm Diameter = 12 \\So, \ radius = \frac{12}{2} = 6 \\\text{ The area of round pizza} = \pi r^{2} \\= \frac{22}{7}\times (6)^2 \\= 113.1 \ in^2[/tex]

Since the area of square pizza is greater than round pizza. Thus, square pizza is better deal.

Guys please help it’s easy but idk

Answers

Answer:

51

Step-by-step explanation:

Volume can be calculated by [tex]\frac{4}{3}\pi r^{3}[/tex]

In this situation, your r (radius) is 2.3. Put 2.3 in to the equation for r, and you get 50.97. Round that to the nearest tenth to make it 51!

please help meee it has time limit​

Answers

Answer:

It is boxes of cereal and bags of pretzels.

Step-by-step explanation:

Boxes of cereal costs $3.95 per box and pretzels cost $3.59 per bag. This is because 15.8÷4= $3.95 and 10.77÷3= $3.59

What is the simplest form of StartRoot StartFraction 126 x y Superscript 5 Baseline Over 32 x cubed EndFraction EndRoot ?

Answers

Answer:

b

Step-by-step explanation:

Answer:

The Correct Answer is b

Step-by-step explanation:

Correct on Edg 2020

heart and give me a good rating if you dont mind ;)

What are the zeros of f(x) = x2 + x - 20?
A. X = -5 and x = 4
B. X = - 4 and x = 5
C. x = -2 and x = 10
D. x = -10 and x = 2

Answers

Answer:

A. x = -5, 4

Step-by-step explanation:

0 = x^2 + x -20

0 = (x + 5)(x - 4)

x = -5, 4

Answer:   x=-4 and x=5

Step-by-step explanation:

0 = x^2 + x -20

0 = (x + 5)(x - 4)

then to find the zeros we should switch the signs so the answer is :

-4,5

A public health researcher examines the medical records of a group of 937 men who died in 1999 and discovers that 210 of the men died from causes related to heart disease. Moreover, 312 of the 937 men had at least one parent who suffered from heart disease, and, of these 312 men, 102 died from causes related to heart disease. Calculate the probability that a man randomly selected from this group died of causes related to heart disease, given that neither of his parents suffered from heart disease. (A) 0.115 (B) 0.173 (C) 0.224 (D) 0.327 (E) 0.514

Answers

Answer:

The correct option is (B) 0.173.

Step-by-step explanation:

The law of total probability states that:

[tex]P(A)=P(A\cap B)+P(A\cap B^{c})[/tex]

The conditional probability of an event A given that another event B has already occurred is:

[tex]P(A|B)=\frac{P(A\cap B)}{P(B)}[/tex]

Then the probability of intersection of A and B is:

[tex]P(A\cap B)=P(A|B)\cdot P(B)[/tex]

Denote the events as follows:

H = a man died from causes related to heart disease.

X = a man had at least one parent who suffered from heart disease

The information provided is:

[tex]P(H)=\frac{210}{937}\\\\P(X)=\frac{312}{937}\\\\P(H|X)=\frac{102}{312}[/tex]

The probability that a man randomly selected from this group died of causes related to heart disease, given that neither of his parents suffered from heart disease is, [tex]P(H|X^{c})[/tex].

Compute the value of [tex]P(H|X^{c})[/tex] as follows:

[tex]P(H)=P(H|X)\cdot P(X)+P(H|X^{c})\cdot P(X^{c})[/tex]

[tex]\frac{210}{937}=[\frac{102}{312}\cdot \frac{312}{937}]+[P(H|X^{c})\cdot (1-\frac{312}{937})]\\\\\frac{210}{937}-\frac{102}{937}=[P(H|X^{c})\cdot \frac{625}{937}]\\\\\frac{108}{937}=P(H|X^{c})\cdot \frac{625}{937}\\\\P(H|X^{c})=\frac{108}{937}\times \frac{937}{625}\\\\P(H|X^{c})=0.1728\\\\P(H|X^{c})\approx 0.173[/tex]

Thus, the probability that a man randomly selected from this group died of causes related to heart disease, given that neither of his parents suffered from heart disease is 0.173.

The correct option is (B).

There are 11 small jars on a table.
3 are Honey.
8 are Jam.
Rosie take 2 at random.
Work out the probability that she takes at least on jar of honey.

Answers

Answer:

There are 11 small jars on a table and 3 of 11 are jars of honey.

=> Probability that Rosie takes at least 2 jars honey:

P = P(Rosie picks 1 jar of honey) + P(Rosie picks 2 jars of honey)

  = (3/11) x (8/10) + (8/11) x (3/10) + (3/11) x (2/11) =  0.486 = ~0.49

Hope this helps!

:)

Answer:

Step-by-step explanation:

you can use a treee diagrammm so the answer ist goeig to be 0.49 thums up

Evaluate 2x^3 + 5x^2 + 4x + 8 when x = -2

Answers

Answer:

4

Step-by-step explanation:

Given the function 2x³ + 5x² + 4x + 8. In order to evaluate the value of the function at x = -2 we will substitute the value of x given into the function as shown;

F(x) = 2x³ + 5x² + 4x + 8

at x = -2

f(-2) = 2(-2)³ + 5(-2)² + 4(-2) + 8

f(-2) = 2(-8) + 5(4) +(-8) + 8

f(-2) = -16+20-8+8

f(-2) = -16+20

f(-2) = 4

The value of the function when x = -2 is 4

Simplify the expression by combining like terms. Write the terms in alphabetical order of the variables.

X+20y-2z+19x-2y+19z

Answers

Answer: [tex]20x+18y+17z[/tex]

Step-by-step explanation:

[tex]x+20y-2z+19x-2y+19z\\(x+19x)+(20y-2y)+(-2z+19z)\\20x+18y+17z[/tex]

Write the least common multiple of 10 and 30

Answers

Answer:

30

Step-by-step explanation:

Multiples of 10 = 10,20,30

Multiples of 30= 30,60,90

The smallest one is 30

Answer:

30

Step-by-step explanation:

GCF(10,30) = 10

LCM(10,30) = ( 10 × 30) / 10

LCM(10,30) = 300 / 10

LCM(10,30) = 30

Data was collected for 226 randomly collected 10 minute interval. For each Tim and I are in a rule the number of people entering the atrium of a large mall were recorded. The data is summarized in the table below

What is the width for this GFDT?


Number of guest. Frequency

60-64. 57

65-69. 39

70-74. 7

75-79. 36

80-84. 87

Answers

Answer:

The class width of this grouped frequency distribution (GFDT) = 5.

The total width of the distribution = 25, that is, from 60 to 84.

Step-by-step explanation:

The class width of a GFDT (grouped frequency distribution) is obtained by dividing the range by the number of classes required and then rounding up.

Note that rounding up is different from rounding off as 4.2 is rounded up to 5 and rounded off to 4.

The class width is the span of each of the class in the grouped frequency distribution.

For this distribution,

Maximum value = 84

Minimum value = 60

Range = (Maximum value) - (Minimum value) = 84 - 60 = 24

Number of classes required = 5

Class width = (24/5) = 4.8 = 5 (rounded up).

The total width of the distribution is given as

Total width = Range + 1 = 24 + 1 = 25.

Hope this Helps!!!

I need to know what –5(–2) equals.

Answers

Answer:

10

Step-by-step explanation:

Since when you multiply two negatives it is a positive, the answer would be 10

Suppose that a magazinemagazine predicted that Candidate A would defeat Candidate B in a certain election. They conducted a poll of telephone directoriestelephone directories with a response rate of 23​%. On the basis of the​ results, the magazinemagazine predicted that Candidate A would win with​ 57% of the popular vote.​ However, Candidate B won the election with about​ 62% of the popular vote. At the time of this​ poll, most households with telephoneshouseholds with telephones belonged to the party of Candidate A. Name two biases that led to this incorrect prediction.

Choose the correct answer below.

A.
Sampling bias Using an incorrect frame led to undercoverage.
Response bias: The way the poll was administered showed bias

B.
Sampling bias: Using an incorrect frame led to undercoverage
Nonresponse bias: The low response rate caused bias

C.
Nonresponse bias: The low response rate caused bias.
Response bias: The way the poll was administered showed bias.

Answers

Answer:

im pretty sure its B

Step-by-step explanation:

Is it true that (x^2–3x+2)/(x –1) = x – 2, for all values of x? Justify your answer.

Answers

Answer:

x²-3x+2=0

x²-2x-x+2=0

(x²-2x)(-x+2)=0

x(x-2)-1(x-2)=0

(x-2)(x-1)=0

x-2=0 or x-1=0

x=2 or x=1

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