One cubic foot holds 7.48 gallons of water, and 1 gallon of water weighs 8.33 pounds. How much does 5 cubic feetfeet of water w
1 answer:
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Answer:
Step-by-step explanation:
Given
Required
Solve for x and for y
Add 31 to both sides
Solving for x
Subtract 4y from both sides
Divide by 2
Solving for y
Subtract 2x from both sides
Divide by 4
Split
<span>f(x) = −7(x + 12)² + 14</span>
the coordinates of the vertex are (-12;14)
f(x)=-7(x²+24x-144)+14
f(x)=-7x²-168x+1008+14
f(x)=-7x²-168x+1022=0
7x²+168x-1022=0
x=
=
=
=-12+-√290
x₁=-12-√290
x₂=-12+√290
Answer: the coordinates of the vertex are (-12;14),
horizontal intercepts are x₁=-12-√290, x₂=-12+√290
the coordinates of the vertex are (-12;14)
f(x)=-7(x²+24x-144)+14
f(x)=-7x²-168x+1008+14
f(x)=-7x²-168x+1022=0
7x²+168x-1022=0
x=
x₁=-12-√290
x₂=-12+√290
Answer: the coordinates of the vertex are (-12;14),
horizontal intercepts are x₁=-12-√290, x₂=-12+√290