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3 years ago

10

Malcolm sells magazine subscriptions. He earns $15 a week plus $3 for each subscription he sells. How many subscriptions must he

sell to earn $90 in one week?

1 answer:

xenn [34]3 years ago

7 0

He would have to sell 25 in a week

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PLEASE HELP ME!!!!!<br> WILL NAME BRANLIEST!!

marin [14]

Answer:

Step-by-step explanation:

to find slope: the formula is:

(y2-y1) / (x2-x1)

in this case it is:

(-9-(-2)) / (-10-(-2))

-7/-8

and thats the slope (that was for question one, and also an example, now do the same for questions 2, 3 and 4!!

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3 years ago

5. If the covariance between the variables x and y is 18 and the variance

klasskru [66]

Answer:

The coefficient of correlation=0.5

Step-by-step explanation:

We are given that

Covariance between the variable x and y=18

Variance of x=16

Variance of y=81

We have to find the coefficient of correlation

We know that

Coefficient of correlation

$r=\frac{covariance(x,y)}{\sqrt{variance(x)}\times \sqrt{variance(y)}}$

Using the formula

$r=\frac{18}{\sqrt{16}\times \sqrt{81}}$

$r=\frac{18}{4\times 9}$

$r=0.5$

Hence, the coefficient of correlation=0.5

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3 years ago

Can someone plz help me find number seven plz

Ann [662]

I think its 3 over 1. But im not sure

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4 years ago

Read 2 more answers

HELP!!!!!!!!!!!!!!!!!!!!!!

Illusion [34]

2. x=10
Break it into right triangles and solve using sine/cosine/tangent

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3 years ago

Multiply 2 and 6. Then, subtract h.

antiseptic1488 [7]

12/h is what you need to write down if you don’t know what h is

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4 years ago