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zlopas [31]
2 years ago
10

Tamara rewrote the expression 0.2(4+1.4y - 2.1). Her steps are shown.

Mathematics
1 answer:
grin007 [14]2 years ago
4 0

Answer:

Her first mistake was in Step 2. She added 0.2 to each term instead of multiplying by 0.2.

Step-by-step explanation:

CORRECT WAY:

0.2(4+1.4y - 2.1)

0.8 + 0.28y - 0.42

0.8 - 0.42 + 0.28y

0.38 + 0.28y

WHAT TAMARA DID:

0.2(4+1.4y - 2.1)

How she got 4.2: 0.2 + 4 = 4.2

How she got 1.6y: 0.2 + 1.4y = 1.6y

How she got -1.9: 0.2 + -2.1 = -1.9

WHAT SHE DID HERE IS WRONG. REMEMBER WHEN IT IS __( ______) IT MEANS THAT YOU NEED TO MULTIPLE NUMBER OUTSIDE THE PARATNESS TO EVERY NUMBER THAT IS INSIDE THE PARATNESS.

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4 0
2 years ago
Read 2 more answers
Evaluate F=9/5C+32 for C = 35 degrees.<br><br> 82<br><br><br> 63<br><br><br> 67<br><br><br> 95
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Answer:

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Step-by-step explanation:

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2 years ago
. In a triangle, the second angle measures twice the first, and the third
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Answer:

First angle = x = 35°

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Step-by-step explanation:

<u>Given : </u>

The second angle measures twice the first, and the third angle measures 5 more than the second.

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<u>Solution : </u>

Let the first angle be x

According to the given question :

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