MATHEMATICS MIDDLE SCHOOL

5x + 10 = −4x − 17 what is x

Answers

Answer 1
Answer: 5x + 10 = -4x - 17 
 +4x          +4x

5x + 4x = 9x

9x + 10 = -17
      -10     -10

-27

9x = -27        9x/9 = -27/9

x = -3
Answer 2
Answer:


this is how you solve for x;

5x + 10 = -4x -17

5x + 4x + 10 = -4x +4x -17 (add 4x on both sides)

9x + 10 = -17

9x +10-10 = -17 -10 (subtract 10 on both sides)

9x = - 27 (next do the inverse operation of x)

x = -27 ÷ 9

x = -3

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Doug needs a ladder that is at least 12 meters long. he has a ladder that is 30 feet long. about how many feet too short is this ladder?

Answers

convert to inches
1 meter=39 inches
12 times 39=468 inches

1feet=12 inches
12 times 30=360 inches

468-360=108 inches

108 inches=how many feet
1foot=12 inches
1/12foot=1 inch
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answer is 9 feet short
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Which expression has a value that is equivalent to 5n+13 when n= -5A.4n+8
b.2n+2
c.n2+13
D.n+8

Answers

Answer:

Option A is correct.

4n + 8 expression which has a value that is equivalent to 5n+13 when n = -5

Step-by-step explanation:

Given the expression: 5n + 13

If n = -5

then, by substituting in given expression we get;

5(-5)+13 = -25+13 = -12

Option A:

4n + 8

Substitute the value of n = -5 we have;

4(-5) + 8 = -20 + 8 = -12

Option B:

2n + 2

then;

2(-5) + 2 = -10 + 2 = -8

Option C :

n^2+13

then;

(-5)^2+13 = 25 + 13 = 38

Option D:

n + 8

then;

-5 + 8 = 3

Therefore, only option A has expression which has a value that is equivalent to 5n+13 when n = -5

Answer:

4n + 8

Step-by-step explanation:

A customer went to a garden shop and bought some potting soil for $12.50 and 6 shrub. If the total bill was $71.00 how Mich did each shrub cost if they all cost the same? Write and solve equation. Show your work

Answers

71-12.50=6x71-12.50=58.5Therefore 6x=58.56x/6=x58.5/6=9.75So each shrub costs $9.75

A coin is biased to display heads 75% of the time . It’s tossed 20times and the out comes are recorded the most improbable simulation for this coin is __ heads 9
13
14
15

Answers

Answer:

The answer is 9, I'm currently taking the test on PLATO

Step-by-step explanation:

What type of number is 0.2782

Answers

0.2782  = 2782 / 10000

This is a rational number, because it can be expressed as a ratio of two integers.

0.2782 is a rational number. 

Note that it is also a decimal number.
It is a decimal answer if you used a calculater, and divided then got that answer, then try the same problems just switch the order that you put in the calculater, ex: if you divide 408÷1201 ,and then you get an answer like that, then you would divide it like 1201÷408
I hope this helped :)

Evaluate. Let n = 2.Enter the answer in lowest terms. 

Answers

Numerator:
8n+3n-7
= 11n-7

Plug n=2 in 11n-7, we have:
11*2-7= 15

Denominator:
6*2n-3(n-1)
= 12n-3n+3 (distributive property)
= 9n+3

Plug n=2 into 9n+3, we have:
9*2+3= 21

15/21
= (15/3) / (21/3)
= 5/7

The final answer is 5/7~
First you do the top
8n+3n-7=8*2+3*2-7=16+6-7= 22-7=15
Then you found out the bottom
6*2n-3(n-1)=6*2*2-3(2-1)=6*2*2-3*1=6*4-3*1=24-3*1=24-3=21
15/21 is your answer.
Hope this helps! :)
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