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alexandr1967 [171]
3 years ago
8

Whats her errors and whats the soulution​

Mathematics
2 answers:
kondor19780726 [428]3 years ago
6 0

Answer:

she messed up at -17=34x

Step-by-step explanation:

she added 8x to each side but she was actually supposed to subtract

Harrizon [31]3 years ago
3 0

The error is 8(x - 3) + 7 = 2x(13) and -17 = 34x.

4 - 17 = -13, not 13

8x - 17 = 26x

-17 = 26x -8

-17 = 18x ( it should be like this, but this is still wrong because it should -26)

The solution is:

8(x - 3) + 7 = 2x(4 - 17)

8(x - 3) + 7 = 2x(-13)

8x - 24 + 7 = -26x

8x - 17 = -26x

8x + 26x = 17

34x = 17

x = 17/34

x = 1/2

Hope it helps!

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In the equation 0.75 - 5/8s = 44, how do you combine the like terms?
Leokris [45]

s = 71.6

____________

0.75 - 5/8s = 44

3/4 - 5/8s = 44

3/4 - 3/4 + 5/8s = 44 + 3/4

5/8s = 44 3/4

5/8s / 5/8 = 44 3/4 / 5/8

s= (179/4 / 5/8)

s= (179/4 * 8/5)

s= (179/1 * 2/5)

s= (358/5)

s= (350/5 + 8/5)

s= (70 + 8/5)

s= (70 + 1 + 3/5)

s= 71 3/5

s= 71.6

I checked this and its correct :P Sorry about the late answer, hope this helps!

7 0
3 years ago
EMERGENCY <br> i+i+i+i=-8<br> i=
Anon25 [30]

Answer

<em>i</em><em>=</em><em>2</em>

Step-by-step explanation:

i+i+i+i=8

4i=8

i=8/4

i=2

4 0
3 years ago
Read 2 more answers
The variable is directly proportional to the variable . If y = 10 when x = 6, what is the value of y when x = 15?
PSYCHO15rus [73]

Answer:

y = 25

Step-by-step explanation:

Given that the quantities are proportional then the equation relating them is

y = kx ← k is the constant of proportion

To find k use the condition y = 10 when x = 6

k = \frac{y}{x} = \frac{10}{6} = \frac{5}{3}

y = \frac{5}{3} x ← equation of proportion

When x = 15, then

y = \frac{5}{3} × 15 = 5 × 5 = 25

7 0
4 years ago
Which of the following is equivalent to (x^2 − 9)(x + 2) − (x^2 + 4x + 4)(x − 5)?
Aleonysh [2.5K]

The correct answer is D.

7 0
3 years ago
Which of the following is the algebraic expression that best describes the sequence 3 , 9 , 27 , 81 , 243
galben [10]

You are multiplying by 3 each time. This sequence is geometric.

9 = 3*3 = 3^2

27 = 3*9 = 3*3*3 = 3^3

81 = 3*27 = 3*3*3*3 = 3^4

and so on.

The general rule is 3^x which is choice D

7 0
3 years ago
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