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3 years ago

Simplify PLZ HELP QUICKLY

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

Step-by-step explanation:

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An ice cream store sells cones for $0.90 and sundaes for $1.65. On a day when 148 cones and sundaes total were sold, the sales w

monitta

Answer:

Select the most appropriate translation to the following question.

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¿Qué hizo?

¿Tiene Ud. un libro?

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¿Qué quiere decir "lapicero"?

Step-by-step explanation:

5 0

3 years ago

A storage tank will have a circular base of radius r and a height of r. The tank can be either cylindrical or hemispherical (ha

Neko [114]

Answer:

Volume: $\frac{2}{3}\pi r^3$

Ratio: $\frac{2}{9}r$

Step-by-step explanation:

First of all, we need to find the volume of the hemispherical tank.

The volume of a sphere is given by:

$V=\frac{4}{3}\pi r^3$

where

r is the radius of the sphere

V is the volume

Here, we have a hemispherical tank: a hemisphere is exactly a sphere cut in a half, so its volume is half that of the sphere:

$V'=\frac{V}{2}=\frac{\frac{4}{3}\pi r^3}{2}=\frac{2}{3}\pi r^3$

Now we want to find the ratio between the volume of the hemisphere and its surface area.

The surface area of a sphere is

$A=4 \pi r^2$

For a hemisphere, the area of the curved part of the surface is therefore half of this value, so $2\pi r^2$ . Moreover, we have to add the surface of the base, which is $\pi r^2$ . So the total surface area of the hemispherical tank is

$A'=2\pi r^2 + \pi r^2 = 3 \pi r^2$

Therefore, the ratio betwen the volume and the surface area of the hemisphere is

$\frac{V'}{A'}=\frac{\frac{2}{3}\pi r^3}{3\pi r^2}=\frac{2}{9}r$

6 0

3 years ago

What is 17.70 = 7/2m + 13.50 ?

Fantom [35]

answer: $m = 1.2$

work:

$17.70 = \frac{7}{2} m + 13.50$ | subtract 13.50 and move it over

$4.2 = \frac{7}{2}m$ | divide by 7/2

$1.2 = m$ | final answer

6 0

3 years ago

which expression shows the result of applying the distributive property to 12 (5y + 4) ? A. 60y + 48 B. 5y + 48 C. 17y + 16 D. 6

PSYCHO15rus [73]

A because you just distribute the 12 to both

7 0

3 years ago

Read 2 more answers

Select the correct answer(click the photo)

MatroZZZ [7]

Answer:

General Formulas and Concepts:

Order of Operations: BPEMDAS
Equality Properties

Step-by-step explanation:

Step 1: Define function

f(x) = 8x + 4

Step 2: Prep

Rewrite: y = 8x + 4
Swap x and y: x = 8y + 4

Step 3: Find Inverse (Solve for y)

Subtract 4 on both sides: x - 4 = 8y
Divide both sides by 8: (x - 4)/8 = y
Rewrite: y = (x - 4)/8
Rewrite: f⁻¹(x) = (x - 4)/8

3 0

3 years ago