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3 years ago

I've learned law of cosines and law of sines so far, but idk how to do this. pls help, thank you!

Mathematics

1 answer:

Dmitry [639]3 years ago

7 0

Answer:

I think ik but it would be like proper.

Step-by-step explanation:

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I need help with these problems 16 20

omeli [17]

16) true
17) true
18) false
19) true
20) false

brainliest pls

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3 years ago

Joanne has a cylindrical, above ground pool. the depth (height) of the pool is 1/2 of its radius, and the volume is 1570 cubic f

scoundrel [369]

Answer:

$\sqrt[3]{3140^2\pi}\approx 146.41\ ft^2$

Step-by-step explanation:

The volume of the cylinder is

$V_{cylinder}=\pi r^2\cdot H,$

where r is the base radius and H is the height.

Since $H=\dfrac{1}{2}r$ and V=1570 cubic feet, then

$1570=\pi r^2\cdot \dfrac{r}{2},\\ \\1570=\dfrac{\pi r^3}{2},\\ \\r^3=\dfrac{3140}{\pi},\\ \\r=\sqrt[3]{\dfrac{3140}{\pi}}\ ft.$

The area of its bottom floor is

$A_{floor}=\pi r^2=\pi\cdot \left(\sqrt[3]{\dfrac{3140}{\pi}}\right)^2= \sqrt[3]{3140^2\pi}\approx 146.41\ ft^2.$

6 0

3 years ago

Whats -2 7/100 as a decimal?

densk [106]

-0.027 is the answer, basically you would just count out the zeros behind the decimal since it's 100, you would place one zero to create the "hundredths" place

8 0

3 years ago

Read 2 more answers

Use the table to complete the work to find the missing value. Conversion Chart Pints Ounces 3 48 7 ? 30 480 3 pints 48 ounces 11

densk [106]

Answer:

176 ounces (C)

Step-by-step explanation:

if you divide 48 by 3 it will give you 16 and there are 11 pints so u wanna multiply 16 and 11 to 176 ounces..

also i got it right on edge :P

4 0

4 years ago

Read 2 more answers

How do i solve this?

Alina [70]

Answer:

m∠R = 60°

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

Step 1: Identify

Angle θ = ∠R

Opposite Leg of ∠R = 10√3

Hypotenuse = 20

Step 2: Solve

Substitute in variables [sine]: $\displaystyle sin(R^\circ) = \frac{10\sqrt{3}}{20}$
[Equality Property] Trig inverse: $\displaystyle R^\circ = sin^{-1}(\frac{10\sqrt{3}}{20})$
Evaluate trig: $\displaystyle R = 60^\circ$

8 0

3 years ago