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RideAnS [48]
3 years ago
10

What is an equation of the line that passes through the points (-2,8) and (1, -1)? ​

Mathematics
1 answer:
svetoff [14.1K]3 years ago
8 0

Answer:

y = -3x + 2

Step-by-step explanation:

y2 - y1 / x2 - x1

-1 - 8 / 1 - (-2)

-9/3

= -3

y = -3x + b

-1 = -3(1) + b

-1 = -3 + b

2 = b

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A parcel delivery service will deliver a package only if the length plus girth​ (distance around) does not exceed 84 inches. ​(A
Kisachek [45]

Answer:

A. 14x14x28

B. The maximum volume is 5488 cuibic inches

Step-by-step explanation:

The problem states that the box has square ends, so you can express volume with:

v=x^{2} y

Using the restriction stated in the problem to get another equation you can substitute in the one above:

4x+y=84\\\\

Substituting <em>y</em> whit this equation gives:

v=x^{2} (84-4x)\\\\v=84x^{2} -4x^{3}

Now find the limit of <em>x</em>:

\frac{84x^{2}-4x^{3}}{dx}=168x-12x^{2}\\\\x=\frac{168}{12}=14

Find the length:

y=84-4(14)=28

You can now calculate the maximum volume:

v=(14)^{2}(28)= 5488

6 0
3 years ago
Two cars left at the same time. One car travels at an average of 7 miles per hour faster than the other one. First car got their
Elena L [17]

Answer:

s=50.999 and you can round it to s=50.1

Step-by-step explanation:

8 0
3 years ago
Help please!!!!!!!!!!!!!!!!!
krok68 [10]
C. 0.25 because you divide 0.06 by 0.24
5 0
3 years ago
Can someone help me plz
Musya8 [376]

Answer:

B

Step-by-step explanation:

lets say the cost for a pound is 2$

if the watermelon weighs 3 pounds it would cost $6.

2(3)

The weight is the variable in the parenthesis because that is what is constantly changing.

4 0
3 years ago
Please help .
Iteru [2.4K]

702 can not be written as the product of 2 prime numbers, because if you divide 702 by 2 then you get 351 and that is not a prime number. Therefore 702 is a prime number.

8 0
2 years ago
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