Answer:
David 1,988-1,956+32
It is David because when you find the unite ratio you get 1,988 for David and 1,956 for Megan.
<span>50x - 32x^3
= 2x (25 - 16x^2)
hope that helps</span>
Based on the given variation, y does not vary directly with x and the constant of variation are 8, 3.2 and 1.25 respectively.
<h3>Variation</h3>
y = k × x
where,
k = constant of proportionality
y = -40
x = -5
y = k × x
-40 = k × -5
-40 = -5k
k = -40/-5
k = 8
when,
y = 8 and x = 2.5
y = k × x
8 = k × 2.5
8 = 2.5k
k = 8/2.5
k = 3.2
when,
y = 5 and x = 4
y = k × x
5 = k × 4
5 = 4k
k = 5/4
k = 1.25
Learn more about variation:
brainly.com/question/6499629
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Answer:
<h2>
6</h2>
Step-by-step explanation:
Collect like terms
Calculate the sum
Move constant to RHS and change its sign
Calculate
Divide both sides of the equation by -5
Calculate
Hope this helps...
Best regards!!
Answer:
10
Step-by-step explanation:
Formula for slope: (y2-y1)/(x2-x1)
Plug the numbers in: (-10-(-20))/(-7-(-8))=10/1=10
Slope is 10.
