Find the value of the variable.
1 answer:
Answer:
z = 20
Step-by-step explanation:
Assuming the triangles are similar write a proportion between the side lengths to solve for z.
To solve for z, multiply the numerator and denominator of each fraction.
9z = 15(32-z)
9z = 480 - 15z
24z = 480
z = 20
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36 minutes.
Answer:
2x + 5y = -15 OR 2x + 5y + 15 = 0 Not sure they want it equal to zero
Step-by-step explanation:
y + 7 = -2/5(x - 10)
y + 7 = -2/5 x + 4
2/5x + y =-3
5(2/5 x + y = - 3)
2x + 5y = - 15
OR
2x + 5y + 15 = 0
Answer:
0
Step-by-step explanation:
f^-1(x) is a reflection on f(x)
So when f(4) = 0 so is f^-1(4) according to this function.
one tip:
Example: 4 - (-3)
it instantly becomes positive because the negatives are close to each other as shown.
hope that helps :)
Answer:
x=9
Step-by-step explanation:
