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Ne4ueva [31]
3 years ago
14

17. Simplify this expression: 13+ (-12) - (-5) = ?

Mathematics
1 answer:
Sever21 [200]3 years ago
6 0

Answer:

6

Step-by-step explanation:

13 +  (-12) - (-5)

13 - 12 + 5

1 + 5 = 6

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The United States government used to make coins of many different values
Papessa [141]

Answer:

1. 50%

2. 3%

3. 20%

4. 200%

Step-by-step explanation:

Here, we want to find the worth of each coin as a percentage of $1

We simply divide the worth by $1 and multiply by 100%

$1 is same as 100 cents

Thus;

1. 50 cent

= 50/100 * 100% = 50%

2. 3 cents

= 3/100 * 100% = 3%

3. 20 cents

= 20/100 * 100% = 20%

4. $2

= 2/1 * 100% = 200%

5 0
3 years ago
Write 21/4 as a decimal. Round to three decimal places
Nadusha1986 [10]

5.250

To change a fraction to a decimal fraction divide the numerator by the denominator.

that is 21 ÷ 4 = 5.250 ( to 3 decimal places )


5 0
3 years ago
Read 2 more answers
An environmental study of a certain community suggests that t years from now, the average level of carbon monoxide in the air wi
icang [17]

Answer:

3.4625

Step-by-step explanation:

Given the equation:

Q(t)=0.05t^2 + 0.1t + 3.4 parts per million

Where t = time in years

By approximately how much will the carbon monoxide lvel change during the coming 6 months?

t = 6 months = 6/12 = 0.5 year

Q(0.5) = 0.05(0.5)^2 + 0.1(0.5) + 3.4 parts per million

Q(0.5) = 0.05(0.25) + 0.05 + 3.4

Q(0.5) = 0.0125 + 0.05 + 3.4

Q = 3.4625

Carbon monoxide level will change by approximately 3.4625 parts per million in 6 months

7 0
4 years ago
What is the midpoint of the segment show below? ​
USPshnik [31]

Answer:

The answer would be c) (5,1/2)!

Hope this helps!

Brainliest?

7 0
4 years ago
What is a factor of 17
eduard
A factor of 17 is 1. Another is 17.
3 0
3 years ago
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