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AysviL [449]
3 years ago
9

Solving for A in the equation S = n/2(A + t)

Mathematics
1 answer:
Dmitrij [34]3 years ago
3 0
S=(n/2)(A+t)
x2 x2
2S=n(A+t)
---   --------
 n       n

2S  n(A+t)
---=---------
 n       n

2S
---=A+t
 n  

.....2S
A=----- -t
......n  

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Solve 3(x−5) = 9. <br><br> x = −3 <br> x = 2 <br> x = 7 <br> x = 8 (this is the answer)
Mariulka [41]

Answer:

x = 8

Step-by-step explanation:

3(x−5) = 9   (by PEDMAS, distribute 3 into parentheses by distributive property)

x(3)−5(3) = 9

3x - 15 = 9   (add 15 to both sides)

3x = 9 + 15

3x = 24   (divide both sides by 3)

x = 24/3

x = 8

8 0
3 years ago
Evaluate the expression with the given variable replacements.<br> 2x3 (if x = 3)
MArishka [77]

Answer:

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Step-by-step explanation:

2x^3

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= 54

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5 0
3 years ago
7 + 100 + 1 + 3 + 7 + 10 + 15 + 12 + 17 + 38
aivan3 [116]

Answer:

7 + 100 + 1 +3 +7 +10 + 15 + 12 +17 + 38

= 210

5 0
4 years ago
A jewelry store received a package of rings that is 1 in long, 10 in wide, and 12 in high. The package contains 1 in cubes that
Maslowich
We need to find the area of the package

10 times 12 times 1 is 120
 
the package is 120 in squared

each cube that holds one ring is 1 inch and there are 120 inches

so the jewelry store reveiced 120 rings.

the explaination.  to find how many rings are in  a package we need to find the volume of that package.  Then once we have that we need to find how many of the cubes can fit into that area.  

7 0
4 years ago
Help?
Mkey [24]

Answer:

500 students

Step-by-step explanation:

Change the percent to a fraction in its simplest terms

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3 0
3 years ago
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