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Scilla [17]
3 years ago
6

Suppose a and b vary inversely, and b = 8 when a = 6. Write a function that models the variation and find b when a = 30. Explain

your answer.
Mathematics
1 answer:
ICE Princess25 [194]3 years ago
6 0
1. If a and b vary inversely and b = 8 when a = 6:
b = k/ a
8 = k / 6
k = 6 * 8
k = 48
Function is:
b = 48 / a
2. When a = 30:
b = 48 / 30 = 8/5
b = 1.6
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A.3.5 <br><br> B.-2.5<br><br> C.-5.5<br><br> D.2.5
mart [117]
The answer is 2.5 because the point is on -1.5, so -1.5+4=2.5
7 0
4 years ago
What is the slope between the points (5,-7) and (-7,1)?
SCORPION-xisa [38]
I hope this helps you



(5,-7) x'=5 y'= -7


(-7,1) x"= -7 y"=1


slope. (x'-x")=y'-y"


slope. (5-(-7))= -7-1


slope. 12= -8


slope =-8/12


slope = -2/3
6 0
4 years ago
What is ×=1×=2×=4 ×=6
nikitadnepr [17]

Answer:

X=1

x=2

x=4

x=6

Step-by-step explanation:

You

literally

got

the

answer

yourself

3 0
3 years ago
Help please math ..??
astraxan [27]

Answer:

(3, - 1)

Step-by-step explanation:

5x - 4y = -11

2x + 3y = -9

Multiply the top equation by 2 and the bottom equation by - 5 to cancel out the x's.

10x - 8y = - 22

- 10x - 15y = 45

Cancel out x's.

-8y = - 22

- 15y = 45

Add like terms.

- 23y = 23

Can't have a negative variable to flip them.

-23 = 23y

Divide.

y = - 1

Input y into one of the equations and solve for x.

2x + 3(-1) = -9

Simplify.

2x -3 = -9

Cancel out -3 by adding 3.

2x = -6

Divide.

x - -3

8 0
3 years ago
Velma needs to crate 59 watermelons. If she can fit 7 watermelons in each crate, how many crates does she need?
Mademuasel [1]

Answer:

The answer would be nine

Explanation:

59 divided by 7 is 8 with 3 remaning but all must be included so you have anothr crate for the remaining the and sice 8+1=9. Velma needs 9 crates. Hope this Helps!!

5 0
3 years ago
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