Answer:
225
Step-by-step explanation:
180
This is because 12x5x3 = 180
Subtract 4x on both sides then divide by negative to all three numbers and your answer will be y = 1/2x - 3/2
Answer: y intercept is 4 and the slope is 4/5
Step-by-step explanation:
x² - 80 = 0
Add 80
to each side: x² = 80
Square root
each side: x = √80
Look it up: x = + 8.944... (rounded)
and
x = - 8.944... (rounded).
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Here's a cleaner solution:
x² - 80 = 0
Add 80
to each side: x² = 80
Square root
each side: x = √80
But 80 = 16 · 5
So √80 = √16 · √5
√16 = 4, so x = 4 √5
