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3 years ago

8

What’s an inverse operation?

1 answer:

yulyashka [42]3 years ago

4 0

The opposite of a equation. Such as addition will be subtraction

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This is 4 questions.

jeka94

1) a. 15% decrease
2) a. $79.20
3) b. 14.3% increase
4) a. $4.68

#1 explanation:
1435 - 1220 = 215
215/1435 = 0.1498
0.1498 x 100 = 14.98 = 15%

#2 explanation:
220 x 0.6 = 132
220-132=88
88 x 0.1 = 8.8
88-8.8 = 79.2 $

#3 explanation:
32-28=4
4/28=0.1428
0.1428 x 100 = 14.28 = 14.3%

#4 explanation:
275 x 0.15 = 41.25
275-41.25 = 233.75
233.75 x 0.02 = 4.675 = 4.68 $

4 0

3 years ago

Read 2 more answers

6) 7(4x - 1) - 2 = 47

MatroZZZ [7]

Answer:

6) X is 2

Step-by-step explanation:

I could only answer one because that's all that I had time for...

I am also sorry about the blurriness and my sloppy handwriting

4 0

3 years ago

If tan x=−1, and 90° < x < 180°, what is cos⁡(x−30°)?

algol13

Answer:

√2/2

Step-by-step explanation:

6 0

4 years ago

A sequence has its first term equal to 3, and each term of the sequence is obtained by adding 5 to the previous term. If f(n) re

xxTIMURxx [149]

F(1) = 3
f(2) = 3 + 5 = 8
f(3) = 8 + 5 = 13

f(n) = 5(n - 1) + 3

f(n) = 5n - 2

4 0

3 years ago

A circular region has a population of about 15,500 people and a population density of about 775 people per square kilometer. Fin

Reil [10]

Answer:

2.5 km

Step-by-step explanation:

First, find the area of the region:

A circular region has a population of about 15,500 people;
A population density of about 775 people per square kilometer.

So, there are $15,500 :775=20$ square kilometers.

Now, let x kilometers be the radius of the circular region, then

$A_{\text{circilar region}}=\pi r^2\\ \\20=\pi r^2\\ \\r^2=\dfrac{20}{\pi}\approx 6.366198\\ \\r=\sqrt{3.366198}\approx 2.523$

To the nearest tenth this is 2.5 km.

6 0

3 years ago