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nata0808 [166]
3 years ago
6

1\ solve the system using elimination. 4x+5y=2 -2x+2y=8

Mathematics
1 answer:
il63 [147K]3 years ago
6 0
The answer would be 6x+3y=2
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You are testing the claim that the proportion of men who own cats is significantly different than the proportion of women who ow
otez555 [7]

Answer:

Step-by-step explanation:

This is a test of 2 population proportions. Let 1 and 2 be the subscript for the men and women who own cats respectively. The population proportion of men and women who own cats would be p1 and p2 respectively.

p1 - p2 = difference in the proportion of men and women who own cats.

The null hypothesis is

H0 : p1 = p2

p1 - p2 = 0

The alternative hypothesis is

Ha : p1 ≠ p2

p1 - p2 ≠ 0

it is a two tailed test

Sample proportion = x/n

Where

x represents number of success

n represents number of samples

For men

n1 = 80

p1 = 55/100 = 0.55

x1 = p1n1 = 0.55 × 80 = 44

For women,

n2 = 100

p2 = 30/100 = 0.3

x2 = p2n2 = 0.3 × 100 = 30

The pooled proportion, pc is

pc = (x1 + x2)/(n1 + n2)

pc = (44 + 30)/(80 + 100) = 0.41

1 - pc = 1 - 0.41 = 0.59

z = (p1 - p2)/√pc(1 - pc)(1/n1 + 1/n2)

z = (0.55 - 0.3)/√(0.41)(0.59)(1/80 + 1/100) = 3.39

Test statistic = 3.39

5 0
3 years ago
How much will the person pay for 5.6 pounds of bananas at a price of $ 1.17 per pound
lawyer [7]

The total amount that the person will pay for each banana is $6.51.

<h3>How much will the person pay for the bananas?</h3>

The amount that the person will pay in total for the bananas is:

= Quantity of bananas x Price of bananas

Solving for the total cost gives:

= Quantity of bananas x Price of bananas

= 5.6 x 1.17

= $6.51

Find out more on solving for cost at brainly.com/question/24494976

#SPJ4

3 0
1 year ago
Find the approximate area of a circle that has a radius of 14 feet. Round your answer to the nearest hundredth.
Illusion [34]

Answer:615.44

Step-by-step explanation:a=Pi time r squared. 3.14 times 14 times 14

8 0
2 years ago
Read 2 more answers
I will give brainaliest if answer is correct.a baseball diamond is square.the distance from home plate to first base is 90 feet.
yan [13]

It would be 127 (usually a little over)

3 0
3 years ago
Expression in fractured form
pychu [463]

Answer:

Step-by-step explanation:

for the first one it's (x + 5) x (x - 7)

second one it's  (x + 5) x (x + 7)

third one is (x - 5) x ( x + 7)

fourth one is (x -5) x (x - 7)

thats the answer

8 0
2 years ago
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