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2 years ago

When was the midpoint formula discovered?

Mathematics

1 answer:

photoshop1234 [79]2 years ago

3 0

Answer:

$(\frac{x1+x2}{2}, \frac{y1+y2}{2})$

Step-by-step explanation:

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PLEASE HELP!! Which describes the graph of y = (x + 7)^2 - 9?

mezya [45]

Answer:

The answer is D. Vertex at (-7,-9).

Step-by-step explanation:

The equation is in vertex form, so you take the opposite of x and the constant stays the same. So, the opposite of 7 is -7 and -9 stays the same.

5 0

2 years ago

A cylinder has a height h, and a radius (3h-2)

tekilochka [14]

Answer:

$V= 4\pi (9h^2 -12h + 4)$

Step-by-step explanation:

Given

Shape: Cylinder

$Radius = 3h - 2$

$Height = h$

$Base\ Area = \pi (3h - 2)^2$

Required

Simplify the volume

The volume is calculated as:

$Volume = Base\ Area * Height$

Substitute values for Base Area and Height

$V= \pi(3h-2)^2*h$

Expand the bracket

$V= \pi(3h-2)(3h-2)*h$

Open brackets

$V= \pi (9h^2 -6h - 6h + 4) *h$

$V= \pi (9h^2 -12h + 4) *h$

$V= 4\pi (9h^2 -12h + 4)$

6 0

2 years ago

Mona wants to buy carpet for a floor in her house.

Musya8 [376]

Answer:

13.05

Step-by-step explanation:

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2 years ago

Square root of 256 is

miskamm [114]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

I need help with question 30..

Aloiza [94]

Let's say 1000 dollars was spent on all of these. That would mean 170 dollars and 240 were spent on food and entertainment respectivly. If we want to see how much of the total cost was spent on these things, we would have to add them and divide them by 1000, so:

$\frac{170+240}{1000}=\frac{410}{1000}=frac{41}{100}$

6 0

3 years ago