I need help with this

I Need Help With This

Answers

Answer 1

Answer:

x = 16

Step-by-step explanation:

Step 1: We know DF - DE = EF

9x - 39 - 47 = EF

Step 2: Simplify

9x - 86 = EF

Step 3: Set the equation equal to 3x + 10

9x - 86 = 3x + 10

6x = 96

x = 16

Therefore x is equal to 16

Answer 2

Answer:

58

Step-by-step explanation:

DE + EF = DF

47+ 3x+10 = 9x-39

Combine like terms

57 +3x = 9x-39

Subtract 3x from each side

57+3x-3x = 9x-3x-39

57 = 6x-39

Add 39 to each side

57+39 = 6x-39+39

96 = 6x

Divide by 6

96/6 = 6x/6

16 =x

We want the length of EF

EF = 3x+10

     = 3*16 +10

    = 48+10

   = 58


Related Questions

HELP ASAP

8^2 – 10x - 3

NEED ALL STEPS PLZZZZ

Answers

Answer:

hope this attachment will help you

What are axioms in algebra called in geometry?
What are axioms in algebra called in geometry

Answers

Answer:

Axioms are generally statements made about real numbers. ... Sometimes they are called algebraic postulates. Often what they say about real numbers holds true for geometric figures, and since real numbers are an important part of geometry when it comes to measuring figures, axioms are very useful

A teacher records the amount of time it took a random sample of students to finish a test and their scores on that test. Let x be the score and y be the amount of time. Conduct a hypothesis test of the claim that there is a linear correlation between the variables, using a 0.10 level of significance. Find the PERCENTAGE OF THE VARIANCE IN THE Y-VALUES THAT CAN BE EXPLAINED BY THEIR LINEAR RELATIONSHIP WITH THE X-VALUES.

Answers

Answer:

The question is incomplete. The complete table is:      

Score in percent (X): 80, 75, 70, 90, 95, 100, 75, 60, 75, 95

Time in minute (Y) : 45, 48, 40, 50, 40, 30, 30, 39, 38, 55

The answer is 0.55 %

Step-by-step explanation:

ΣX = 815

ΣY = 425

ΣX x Y = 34565

Σ = 67925

Σ[tex]$Y^2$[/tex] = 18699          

So, correlation coefficient, b

[tex]$b= \frac{n \Sigma XY- \Sigma X \Sigma Y}{\sqrt{n \Sigma X^2-( \Sigma X)^2} \times \sqrt{(n \Sigma Y^2 -(\Sigma Y)^2}}$[/tex]

[tex]$b = \frac{(10 \times 34565)-(815 \times 425)}{\sqrt{(10 \times 67925)-(815)^2} \times \sqrt{(10 \times 10699)-(425)^2}}$[/tex]

[tex]$b= -\frac{725}{9779 \times 2702}$[/tex]

b = -0.0741

Correlation Determination:

[tex]$B^2 = (-0.0741)^2$[/tex]

    = = 0.0055 = 0.55%

Therefore,  0.55 percentage of the variation in y can be explained by x variable.

             

7-7 im gonna post 7 more please helppp!

Answers

Answer = p = 21
Transposing -18 to RHS
= p = 18 + 3
p = 21
Verification
21-18=3
= 3=3
Hence, RHS = LHS

Hi there! Hopefully this helps!

----------------------------------------------------------------------------------------------

Answer: p = 21~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[tex]p - 18 = 3[/tex]

Add 18 to both sides.

[tex]p = 3 + 18[/tex]

Add 3 and 18 to get, you guessed it, 21!

Find the equation of the line that contains the points (3,5) and (7, 7). Write the equation in the form y = mx + b and identify m and b.
m=
b=

Answers

Step-by-step explanation:

Using Point - Slope formula :

[tex](y - y_1) = \frac{(y_2 - y_1)}{(x_2 - x_1)} (x - x_1)[/tex]

[tex](y - 5) = \frac{2}{4} (x - 3)[/tex]

2y - 10 = x - 3

[tex]y = \frac{1}{2} x + \frac{7}{2} [/tex]

m = 1 / 2

b = 7 / 2

How can you create a cone and a cylinder using this tool? Describe the shapes and the specific axes of rotation that produce a cone and a cylinder. If there is more than one polygon that can generate the same cone or cylinder, state each shape in the table.

Answers

Answer:

The answer is in the image.

Step-by-step explanation:

Answer:

Cone- 1 isosceles triangle revolved 180° about its height

2 isosceles triangle revolved 180° about its height

cylinder 1 rectangle revolved 180° about either axis of symmetry

2 revolved 360° about any side

Step-by-step explanation: plato edmentum

I do not understand this, can anyone help me out?

Answers

Answer:

the Answer what have to be the fist bc c is the only on that is not with a ,g or b

Step-by-step explanation:

If 15 oranges cost Rs. 70,how much do 39 oranges cost ?​

Answers

Answer:

firstly divide 70 by 15 and when the product came multiply it with 39

Step-by-step explanation:

70 ÷ 15 = 4.66

4.66 × 39 = 181.974

Convert 2 centimeters into feet. Round your answer to the nearest hundredth.

Answers

.066

1 Centimeter = 0.03280839895 Feet

The conversion of 2 centimeters into feet would be 0.066 feet.

What is the number system?

A number system is defined as a way to represent numbers on the number line using a set of symbols and approaches. These symbols, which are known as digits, are numbered 0 through 9. Based on the basic value of its digits, different types of number systems exist.

We have to determine the conversion of 2 centimeters into feet.

Since one centimeter = 0.03280839895 feet

Therefore two centimeters = 2×0.03280839895 feet

⇒ two centimeters = 0.0656167

Round the answer to the nearest hundredth.

⇒ two centimeters = 0.066

Therefore, the conversion of 2 centimeters into feet would be 0.066 feet.

Learn more about the number system here:

https://brainly.com/question/21751836

#SPJ2

An bus station has determined that the relationship between the number of passengers on a bus and the total weight of luggage stored in the baggage compartment can be estimated by the least squares regression equation y=118+14x. Predict the weight of luggage for a flight with 142 passengers.

Answers

Answer:

The weight of luggage for a flight with 142 passengers is 2,106

Step-by-step explanation:

The total weight of luggage stored in the baggage compartment can be estimated by the least squares regression equation:

y=118+14*x

where y is the total weight of luggage stored in the luggage compartment and x is the number of passengers on a bus.

If you want to predict the weight of luggage for a flight with 142 passengers, this means that x must have a value of 142. So, replacing in the expression:

y=118+14*142

you get:

y=118+1,988

y=2,106

The weight of luggage for a flight with 142 passengers is 2,106

On the graph of the equation 3x+ 2y=18, what is the value of the y-intercept?
A) -9
B) -6
C) 6
D) 9

Answers

Answer:

D) 9

Step-by-step explanation:

[tex]3x+ 2y=18\\\\Let \:x\:equal\:to\:0\\\\3(0)+2y=18\\\\0+2y=18\\\\2y=18\\\\Divide \:both\:sides\:of\:the\:equation\:by \:2\\\frac{2y}{2} =\frac{18}{2} \\\\y =9\\(0,9)[/tex]

Answer:

y = 9

Step-by-step explanation:

3x + 2y = 18

required:

find the y-intercept

we have to eliminate x to get the y intercept value

3(0) + 2y = 18

2y = 18

y = 18/2

y = 9

so the x & y intercept would be (0, 9)

Need help... Thank you

Answers

Answer:

3

because that's the definition of corresponding angles

40% of the cost was tax. if the taxes paid were $15,000, what was the total cost of the car?

Answers

Answer:

$37500

Step-by-step explanation:

For this we can simply create a proportion of the percentages.

.4 / 1 == 15000 / x

Now we solve for x:

x = 15000/.4

x = 37500

Thus, the cost of the car was $37,500.

Cheers.

A national survey of 2500 adukt citizens of a nation found that 21 % dreaded Valentine's Day. The margin of error for the survey was 5.4 percentage points with 90% confidence. explain what this means.
which statement below is the best explanation?

a. there is 84.6% to 95.4% confidence that 25% of the adult citizens of the nation dreaded Valentine's Day
b. in 90% of samples of adult citizens of the nation, the proportion that dreaded Valentine's Day is between 0.196 and 0.304.
c. there is 90% confidence that the proportion of the adult citizens of the nation that dreaded Valentine's Day is between 0.196 and 0.304.
d. there is 90% confidence that 25% of the adult citizens of the nation dreaded Valentines Day.

Answers

Answer:

The  correct option is C

Step-by-step explanation:

From the question we are told that

   The sample size is  [tex]n = 2500[/tex]

    The sample  proportion is  [tex]\r p = 0.21[/tex]

    The margin of error is  [tex]E = 0.054[/tex]

The  90% confidence interval is  mathematically represented

         [tex]\r p - E < p < \r p + E[/tex]

=>      [tex]0.21 - 0.054 < p < 0.21 + 0.054[/tex]

=>      [tex]0.156< p < 0.264[/tex]

10) The perimeter of a rectangular yard is 60 meters. What is its length if its width
is twice its length?
*
A 10 meters
B 18 meters
C 20 meters
D 24 meters

Answers

Answer:

Length = 20 metres

Width = 10 mteres

Step-by-step explanation:

Let the width be x metres

Let the length be 2x metres

Perimeter = 60 metres

therefore, by the problem ,

2(length+breadth)= perimeter

=>2(2x+x)=60

=>2 *3x=60

=>6x=60

=>x=10

length = 20 metres

width = 10 mteres

In a certain year, 23% of all teenagers in the United States had checking accounts. Your bank, TeenChex Inc., is interested in targeting teenagers who do not already have a checking account. (a) If TeenChex selects a random sample of 1,000 teenagers, what number of teenagers without checking accounts can it expect to find? teenagers What is the standard deviation σ of this number? (Round the standard deviation to one decimal place.)

Answers

Answer:

1. 770

2. 13.31

Step-by-step explanation:

n = 1000

P (probability of those with account) = 23% = 0.23

q(probability of those without account) = 1-p = 0.77

a. We are expected to find the expected number of those without checking account

= n * q

= 1000 * 0.77

= 770

b. Standard deviation

= √n*p*t

= √1000x0.77x0.23

= √177.1

= 13.31

13 The diagram shows nine identical squares inside a rectangle.
The length of the rectangle is 12 cm.
Work out the width of the rectangle

Answers

Answer:

5...is the width of the rectangle .

I don’t know the answer to this question

Answers

Limited Resources and Unlimited Desires...


because scarcity is the state of being scarce or in short supply; shortage. So, if people have a unlimited desire for something.. let’s say masks and the company only have a limited amount.. the masks are going to be scarce.

last month you had an outstanding check of $87.90 that had not yet been cashed, so it did not show up on your statement. This month, you wrote checks totaling $379.42. You made one deposit of $100, and you withdrew $60 from an ATM. If the check from last month was cashed and recorded on your statement, and if the bank paid $0.23 in interest, then by how much did your account balance change this month?

Answers

Answer:

Step-by-step explanation:

Deposit made                                =   + $ 100 . 00

withdrawal made                           =   - $ 60 .00

check of last month encashed      =   - $ 87 . 90

interest paid by bank                       = + $ 00 . 23

-----------------------------------------------------------------------  

Net effect                                           = - $ 47.67

the account balance reduces by amount = $ 47.67

A researcher examines the records of all registered voters in one city and finds that 43% are registered democrats. Is the evaluated group a population or a sample?

Answers

Answer: Population

Step-by-step explanation: Population is refers to the whole or entire members or of a given set. This is different from a sample which is used to refer to members of a subset (a subset is a certain portion or fraction of an entire set). In the scenario above, since the evaluation was based on the entire number of registered voters in the country, this means we are referring to a population. The inference about the percentage of democratic voters was drawn from a pool of all the entire number of registered voters available in the country and not from a certain subset or portion of registered voters. Hence, the evaluated group is a population.

What is the probability of getting a 10 or a jack from a deck of poker cards (52 cards)?

Answers

Answer:

15.38%

Step-by-step explanation:

there are four 10 cards and four jack cards.

4+4=8

you want to get one from 52 cards, so it's 8 out of 52. 8/52

to calculate the percentage, you multiply 8 by 100, then divide by 52.

8*100/52=15.38 (rounded answer)

The equivalent resistance of R1 = 1000 ohms and R2 = 1500 ohms connected in parallel is _____ ohms.

Answers

Answer:

600 Ω see attachement

Step-by-step explanation:

Find all values of x for which the series converges. (Enter your answer using interval notation.) [infinity] 9 x − 7 9 n n = 0 For these values of x, write the sum of the series as a function of x.

Answers

Answer:

The series converges to   [tex]$ \frac{1}{1-9x} $[/tex]     for   [tex]$ \frac{-1}{9} < x < \frac{1}{9} $[/tex]                

Step-by-step explanation:

Given the series is     [tex]$ \sum_{n=0}^{\infty} 9^n x^n $[/tex]

We have to find the values of x for which the series converges.

We know,

[tex]$ \sum_{n=0}^{\infty} ar^{n-1} $[/tex] converges to  (a) / (1-r) if r < 1

Otherwise the series will diverge.

Here, [tex]$ \sum_{n=0}^{\infty} 9^n x^n = \sum_{n=0}^{\infty} (9x)^{n} $[/tex] is a geometric series with |r| = | 9x |

And it converges for |9x| < 1

Hence, the given series gets converge for [tex]$ \frac{-1}{9} < x < \frac{1}{9} $[/tex]

And geometric series converges to [tex]$ \frac{a}{1-r} $[/tex]

Here, a = 1 and r = 9x

Therefore, [tex]$ \frac{a}{1-r} = \frac{1}{1-9x} $[/tex]

Hence, the given series converges to   [tex]$ \frac{1}{1-9x} $[/tex]     for   [tex]$ \frac{-1}{9} < x < \frac{1}{9} $[/tex]

Shown below is the solution to the linear program for finding Player A's optimal mixed strategy in a two-person, zero-sum game.

VARIABLE VALUE REDUCED COSTS
PA1 0.050 0.000
PA2 0.600 0.000
PA3 0.350 0.000
GAINA 3.500 0.000

CONSTRAINT SLACK/SURPLUS DUAL PRICES
1 0.000 -0.500

2 0.000 -0.500
3 0.000 0.000

4 0.000 3.500





a.

What is Player A's optimal mixed strategy?

b.

What is Player B's optimal mixed strategy?

c.

What is Player A's expected gain?

d.

What is Player B's expected loss?

use this area to narratively respond to all four parts of the question

Answers

Answer:

Following are the answer to this question:

Step-by-step explanation:

For Option a:

Its optimal mixed approach for Player A's to Player A  

A1 with a chance of .05 utilizing technique  

Using the .60 chance strategy for A2  

Use the .35 possibility strategy for A3  

For Option b:

Optimal level mixed approach for team B:  

Use the strategy for B1 with a probability of 50  

Using the chance strategy for B2 at .50  

no  use strategy for B3  

For Option c:

The estimated gain of Player A will be= 3.500

For Option d:

The estimated loss of Player B will be 3.500

M. Score: 0 of 1 pt
5 of 12
5.1.35
Find the prime factorization of the composite number.
795
795 =
(Type your answer using exponential notation.)

Answers

Answer:

  3×5×53

Step-by-step explanation:

You can use divisibility rules to find the small prime factors.

The number ends in 5, so is divisible by 5.

  795/5 = 159

The sum of digits is 1+5+9 = 15; 1+5 = 6, a number divisible by 3, so 3 is a factor.

  159/3 = 53 . . . . . a prime number,* so we're done.

795 = 3×5×53

_____

* If this were not prime, it would be divisible by a prime less than its square root. √53 ≈ 7.3. We know it is not divisible by 2, 3, or 5. We also know the closest multiples of 7 are 49 and 56, so it is not divisible by 7. Hence 53 is prime.

Use a​ t-test to test the claim about the population mean µ at the given level of significance using the given sample statistics. Assume the population is normally distributed.

Claim: μ ≥8300, α=0.10
Sample statistics: ¯x=8000, s=440, n=24

Required:
a. What are the null and alternative hypotheses?
b. What is the value of the standardized test statistic? (Round to 2 decimal places as needed.)
c. What is the p-value? (Round to three decimal places as needed.)
d. Decide whether to reject or fail to reject the null hypothesis.

Answers

Answer:

uoooooohuuuuuuuuuuuihouu

If 8 people can pick the apples from trees in 6 days, how long will it take12 people?

Answers

4 days.
If it takes 6 days for 8 people to pick apples then it must take 48 days for 1 person to do it because 6•8=48.
So then it must take 12 people
48/12 days which is 4 to pick apples from trees.

a car takes 8 hours to reach to its destination with a speed of 75km/hr. how much time will it take if the speed is 60km/hr?​

Answers

Answer:

10 hours

Step-by-step explanation:

speed = distance/time

s = d/t

d = st

d = 75 km/h * 8 h = 600 km

t = d/s

t = 600 km/(60 km/h) = 10 h

Answer: 10 hours

Which fraction below is NOT equivalent to 1/3 2/6 3/9 4/12 5/13​

Answers

Answer:

5/13 (irreducible)

Step-by-step explanation:

1/3=2/6=3/9=4/12 are all thirds of the total.

what is onetenth for 19,548

Answers

Step-by-step explanation:

one-tenth of 19,548 is 1954.8

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