Answer:
(1, 10 )
Step-by-step explanation:
Given the 2 equations
- 9x - y = - 19 → (1)
5x + y = 15 → (2)
Adding the 2 equations term by term will eliminate the y- term
- 4x + 0 = - 4
- 4x = - 4 ( divide both sides by - 4 )
x = 1
Substitute x = 1 into either of the 2 equations and solve for y
Substituting into (2)
5(1) + y = 15
5 + y = 15 ( subtract 5 from both sides )
y = 10
solution is (1, 10 )
Given the formula, f = 5gh
To solve for h:
Factor out h from the right-hand side of the equation:
f = h(5g)
Divide both sides by (5g):
f /(5g) = h(5g)/(5g)
f/5g = h
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The answer to your question is B.
Answer: 81 cm^2
Steps:
A = l x w
A = 9 x 9
A = 81
