Answer:
A = 2x²; 128 ft²
Step-by-step explanation:
Area of original garden = x²
Let A = area of new garden. Then
A = 2x²
If x = 8 ft,
A = 2 × 8² = 2 × 64 = 128 ft²
The area of the new garden is 128 ft²
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Answer:
ngl, he does have a decent amount of subs for a beginner
Step-by-step explanation:
I would if I was allowed to
We take each number as x = 2x 3x 4x
(2x)³+(3x)³+(4x)³=33957
8x³+27x³+64x³=33957
99x³=33957
x³=33957÷99
=∛343
x=7
2x=2×7=14
3x=3×7=21
4x=4×7=28
=the three numbers are 14,21,28
Weird question wording. I take it should mean that this is a quadratic equation with solutions of x = -5 and x = 8. Then these are the factors: (x+5) and (x-8).
So
(x+5)(x-8) = 0 is the equation because x = -5 and x = 8 can make left-side equal to 0. But we expand so it becomes x² - 3x - 40 = 0
