2 years ago

Distance between the points (-4,6) and (3,-7)

1 answer:

5 0

Answer:19

Step-by-step explanation:first make or find a grid chart then label them and make the x axis and y axis then count up the blocks they are apart and you’ll get 19( I hope)

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the perimeter of a rectangle is 55 inches. the ratio of the length to width is 7:4. use proportions to find the area of the rect

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Answer:

Step-by-step explanation:

let : x the length and y the width .... ( x > y and x ; y reals numbers )

the perimeter is : 2(x+y)

2(x+y) = 55...(1)

x/y = 7/4 ...(2)

by (2) : x = (7/4)y

subsct in (1) : 2( (7/4)y +y ) =55

(7/2)y +2y =55

multiply by 2

7y +4y = 110

11y = 110

y = 10

x = (7/4)(10)

x = 35/2

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Which statement proves that the diagonals of square PQRS are perpendicular bisectors of each other? The length of SP, PQ, RQ, an

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3 years ago

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Justin is getting cans of soda. It cost him $3 each week to advertise his business. He buys each can for $0.30 and sells each on

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Loss per week is -$3
Profit per can is $1.00 - $0.30 which is $0.70

Therefore then equation is
p = 0.7x - 3

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2 years ago

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2 years ago

In a large population of adults, the mean IQ is 112 with a standard deviation of 20. Suppose 200 adults are randomly selected fo

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Answer:

(c)approximately Normal, mean 112, standard deviation 1.414.

Step-by-step explanation:

To solve this problem, we have to understand the Central Limit Theorem

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$ .