Pls show work I’ll give
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Mathematics, 03.03.2021 06:40 michael11948
Answer from: Quest
18.8 cubic inches.
step-by-step explanation:
volume of a cone = πr²h
r = 1.5 inches
h = 8 inches
pi = 3.14
volume of our cone = × 3.14 × 1.5² × 8 = 18.84 square inches
or equals to 18.8 square inches rounded up to nearest tenth.
Answer from: Quest
x = ±sqrt(10)
step-by-step explanation:
5 - 2x² = -15
subtract 5 from each side
5-5 - 2x² = -15-5
-2x^2 = -20
divide by -2 on each side
-2x^2 /-2= -20/-2
x^2 =10
take the square root on each side
sqrt(x^2 )=±sqrt(10)
x = ±sqrt(10)
check:
5 - 2x² = -15
+sqrt(10)
5 - 2(sqrt(10))² = -15
5 -2(10) = -15
5 -20 = -15
-15 = -15
-sqrt(10)
5 - 2(-sqrt(10))² = -15
5 -2(10) = -15
5 -20 = -15
-15 = -15
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