3 years ago

1. X - 9 = 20

Mathematics

1 answer:

Verizon [17]3 years ago

3 0

1. x=29

2. x=15

3. y=4

4. y=2

5. x=4

6. x=-21

7. y=63

8. x=12

9. x=-6

10. y=7

11. y=6

12. x=28

13. y=5

Hope it helps......

You might be interested in

-27=-3p+15-3p solve the equation and show your work

Gnesinka [82]

-27 = -3p + 15 - 3p

Combine like terms.
-3p -3p = (-3-3)p = -6p

-27 = -6p + 15

Subtract 15 from each side to get the variable term on its own.

-27 - 15 = -6p + 15 - 15

-42 = -6p

Divide each side by -6 to find p.

p = -42 ÷ -6 = 7

6 0

2 years ago

Σ^30 (3n + 7) - [?]<br> 1

netineya [11]

I dont know how to solve this but heres a suggestion: Use PEMDAS

7 0

3 years ago

You and a friend are playing a game by tossing two coins. If both coins land

Novosadov [1.4K]

c. No. You have a probability of winning, while your friend has a
probability of winning.
Or it’s A

3 0

3 years ago

Read 2 more answers

The National Assessment of Educational Progress (NAEP) gave a test of basic arithmetic and the ability to apply it in everyday l

mylen [45]

Answer:

a) 2.0702

b) 2.07

Step-by-step explanation:

Given:

Sample, n = 840

standard deviation, σ = 60

a) The standard deviation of the sampling distribution, will be:

$= \frac{\sigma}{\sqrt{n}}$

$= \frac{60}{\sqrt{840}}$

= 2.0702

Standard deviation of the sampling distribution is 2.0702

b) According to the 68 part of the 68-95-99.7 rule, 68% of all values of x fall within 1 standard deviation on either side of the unknown mean μ.

Therefore, missing number will be:

$1 * [\frac{\sigma}{\sqrt{n}}]$

= 1 * 2.0702

= 2.0702 ≈ 2.07

6 0

2 years ago

The table below shows the price, in dollars, for the number of balloons indicated.

zysi [14]

Yes, the price is proportional because you can reduce their fractions:
16/4 = 4
24/6 = 4
36/9 = 4
56/14 = 4

5 0

2 years ago