A number greater than -5 as an inequality

Mathematics

1 answer:

charle [14.2K]3 years ago

8 0

Answer:

n > -5

Step-by-step explanation:

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Which quadratic equation is equivalent to (x+2)^2+5(x+2)-6=0?

Mrrafil [7]

U=(x+2)
u^2+5u-6=0

C is answer

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Darrius bought 3 gallons of ice cream for $9.50 how much will it cost him if he wants 7 gallons?

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Answer:

Its going to cost him 22.167

Step-by-step explanation:

Divide $9.50 by 3 = 3.167

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Which expression is equivalent to 3x + 2.5(4x + 2)?

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Answer:

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Step-by-step explanation:

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Sphere and a cylinder have the same radius and height. The volume of the cylinder is 64 meters cubed.

Mrrafil [7]

Answer:

C. 128/3 meters cubed

Step-by-step explanation:

The volume of a cylinder is denoted by: $V=\pi r^2h$ , where r is the radius and h is the height. We know it's equal to 64, so we can set that equal to V:

$V=\pi r^2h$

$64=\pi r^2h$

We know that the sphere and cylinder have the same height and radius. However, the "height" of a sphere is actually the same as its diameter, which is twice its radius. Then, we can replace h in the above equation with 2r:

$64=\pi r^2h$

$64=\pi r^2*2r=2\pi r^3$

$\pi r^3=64/2=32$

Now, the volume of a sphere is denoted by: $V=\frac{4}{3} \pi r^3$ , where r is the radius. From above, we know that $\pi r^3=32$ , so we can plug this into the equation: