When x is doubled, y is doubled. When z is multiplied by 5/8, so is y. The result of both changes is that y is multplied by 2·(5/8) = 5/4. The new value of y is
... y = 5/4·320 = 400
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If you really want to, you can use the formula
... y = kxz
and compute the value of k as
... k = y/(xz) = 320/(4·16) = 5
Then use this formula with the new values of x and z:
... y = 5·8·10 = 400
Answer:
140%
Step-by-step explanation:
To write a percentage we need a number over 100.
We can first set up two ratios:
We can solve using cross multiplication (multiply the numerator of the first fraction with the denominator of the second fraction and multiply the numerator of the second fraction with the denominator of the first fraction)
3500=25x
Divide both sides by 25 to isolate x
x=140
140%
A) 138 because 360 minus 90 plus 90 plus 42 is 138
Answer:
y=4
x=-3
Step-by-step explanation:
4(-3)-9y=-48
-12-9y=-48
-9y=-36
y=4
x=-3
Answer:
C
Step-by-step explanation:
4y-2y=10
y=5