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Ira Lisetskai [31]
3 years ago
15

Directions: Simplify the following expressions.

Mathematics
1 answer:
stiv31 [10]3 years ago
7 0
1. 12
2. 0
3. 10
4. 18
5. 12
6. 20
7. 10
8. 12
9. 16
10. 72
11. 58
12. 6x
13. 21x
14. 12x + 24
15. 39x - 39
16. 48x + 72x
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Simplify: 8n-7y-12n+5-3y
professor190 [17]
8n−7y−12n+5−3y

=8n+−7y+−12n+5+−3y

Combine Like Terms:

=8n+−7y+−12n+5+−3y

=(8n+−12n)+(−7y+−3y)+(5)

=−4n+−10y+5

3 0
3 years ago
Read 2 more answers
For males in a certain town, the systolic blood pressure is normally distributed with a mean of 125 and a standard deviation of
Vilka [71]

The interval of systolic blood pressure will be between 155 to 95

<h3>What is the standard deviation?</h3>

Standard deviation is defined as the amount of variation or the deviation of the numbers from each other.

From the question, we are told that

Mean  x=125

Standard deviation = 10

The Percentage for men =99.75%

Generally, the empirical rule 68%,95% and 99.7% of data value lay b/w 1,2,3 standard deviation of mean  

Standard deviation n= 10

Mean x= 125

Generally, the interval  of systolic blood pressure for middle 99.7 of male G is mathematically given as

G = Mean ± (3x \sigma)

G= 125 ±  (3 x 10)

G= 125 ±  (30)

G = 155 and 95

Hence the interval of systolic blood pressure will be between 155 to 95

To know more about standard deviation follow

brainly.com/question/475676

#SPJ1

6 0
2 years ago
Căn bậc hai số học của 9 là<br> A. 3−. B. 3. C. 81. D. 81−.
Fynjy0 [20]

Answer:

ko biet

Step-by-step explanation:

4 0
3 years ago
Find the explicit formula for the general nth term of the arithmetic sequence described below. Simplify the formula and reduce a
NemiM [27]

Answer:

an = 4/3n - 13/3.

Step-by-step explanation:

The first term is a1,

a24 = a1 + 23d

83/3 = a1 + 4/3* 23

a1 =    83/3 - 92/3

a1 = -9/3 = -3.

So the nth term an =  -3 + 4/3(n - 1)

an = -3 + 4/3 n - 4/3

an = 4/3n - 13/3

6 0
4 years ago
Jorge started the month with a balance of $400 in his checking account and ended the month with $450 what is the percent of the
KatRina [158]

Answer:

%12.5

Step-by-step explanation:

<em>Step 1:  Make an equation</em>

<em>400x = 450</em>

<u>Step 2:  Divide both sides by 400</u>

400x / 400 = 450 / 400

<em>x = 1.125</em>

<u>Step 3:  Convert into a percentage</u>

1.125 * 100

<em>%112.5</em>

<em>The increase is %12.5</em>

Answer:  %12.5

6 0
3 years ago
Read 2 more answers
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