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3 years ago

15

Sarah is turning 21 today. In the mail, she received 16 envelopes, and each envelope included $2.10. How much money did she rece

ive in the mail?

1 answer:

Mademuasel [1]3 years ago

7 0

Sarah will have $33.60 in total

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Evaluate f(x)=7x+7 when x=-9

stealth61 [152]

Answer:

-56

Step-by-step explanation:

f(x) = 7x + 7

x = -9

We meed to plug in x = -9 into the first equation:

f(-9) = 7(-9) + 7

We can open up the parentheses:

f(-9) = -63 + 7

And then simplify:

f(-9) = -56

7 0

3 years ago

Which value represents the correlation coefficient for this data

AfilCa [17]

Its 0.20 i think bc its the one that make the most since

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3 years ago

Is -13x+3 increasing or decreasing negative or positive slope????

Dafna11 [192]

-13x + 3 is decreasing and has a negative slope.

6 0

3 years ago

Find the distance between the points L(7,-1) and M(-2, 4).

zysi [14]

Answer:

The answer is

$\sqrt{106} \: \: \: or \: \: \: 10.3 \: \: \: \: units$

Step-by-step explanation:

The distance between two points can be found by using the formula

$d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

L(7,-1) and M(-2, 4)

The distance between them is

$|LM| = \sqrt{ ({7 + 2})^{2} + ( { - 1 - 4})^{2} } \\ = \sqrt{ {9}^{2} + ({ - 5})^{2} } \\ = \sqrt{81 + 25} \\ = \sqrt{106} \: \: \: \: \: \: \: \\ = 10.29563014...$

We have the final answer as

$\sqrt{106} \: \: \: or \: \: \: 10.3 \: \: \: \: units$

Hope this helps you

4 0

2 years ago

IM PUTTING THIS FOR 30 POINTS PLEASE ANSWER

Alex Ar [27]

Answer:

Jacks scores 130 points

Jill scores 75 points

Step-by-step explanation:

J=Jacks score

K=Jills score

2K-20+K=205

So, we can do 3K-20=205

+20 +20

(cancel it out)

and we are left with 3K=225 which is K=75, so we do do 205-75=130(which is jacks score). To prove this we can do 75x2=150-20=130

6 0

2 years ago