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kaheart [24]
3 years ago
7

Explain what mistake was made in the problem below and what should be the

Mathematics
1 answer:
romanna [79]3 years ago
7 0

Answer:

Instead of moving the 3x to the opposite side of the equation they moved the 2x. And the correct answer is x=-6 not x=6.

Step-by-step explanation:

Student Work:

2(x + 4) – 8 = 3x+10-4

2x + 8–8 = 3x + 6

2x = 3x + 6

- 3x – 3x

X = 6

My work:

2(x+4)-8=3x+10-4

2x+8-8=3x+6

2x=3x+6

-x=6

x=-6

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<h2>-2</h2>

4 0
3 years ago
What is the length of the leg on a right triangle with the other leg measuring 15 inches and the hypotenuse measuring 18 inches
Olegator [25]

\huge \cal \blue{ANSWER}

In this triangle by applying Pythagoras theorem.

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***PLEASE HELP WILL GIVE BRAINLIEST!!!***
Ede4ka [16]

in the number line, the end points are DG, and the point in between is O

DG = 88

DO = 5x + 12

OG = 2x

Set the equation. The two parts (DO & OG) are equal to the whole (DG)

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Simplify. Combine like terms

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Isolate the x. Remember to do the opposite of PEMDAS. Subtract 12 from both sides

7x + 12 (-12) = 88 (-12)

7x = 76

Isolate the x. Divide 7 from both sides:

7x/7 = 76/7

x = 76/7

----------------------------------------------------------------------------------------------------------------------------

Find DO. Plug in "76/7" for x:

DO = 5x + 12

DO = 5(76/7) + 12

Simplify. Remember to follow PEMDAS. Multiply 76 with 5

DO =  380/7 + 12

Next, divide 380 with 7

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Finally, add

DO  = 54.29 + 12

DO = 66.29

66.29 is your answer

hope this helps


4 0
3 years ago
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