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Aleonysh [2.5K]
2 years ago
9

Please help me ill mark you brainliest and please show your work thank you and god bless :)

Mathematics
2 answers:
ICE Princess25 [194]2 years ago
7 0

Answer:

The other person is correct. She didn't correctly distribute 3 to -10. The result would have been 3x - 30 instead of 3x + 30. If you multiply a positive number by a negative number, the answer will be negative. :)

poizon [28]2 years ago
3 0
The second one. She did not correctly distribute 3 to (x-10) it’s supposed to be 3x-30 not 3x+30
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How to solve this problem
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Leona [35]

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3        3      -5     -5        5         2

         0        9     12       21       78

         3        4      7        26       80

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3 years ago
YOU WILL GET MARKED BRAINLIEST:)
Aleks04 [339]

Answer:

Z = 2

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This tape diagram is split into two equal parts.

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7 0
2 years ago
Read 2 more answers
If a equals 4b - 15 what is b
nlexa [21]

Answer:

b = a + 3.75

Step-by-step explanation:

a = 4b - 15

You are solving for b. Isolate the b. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, add 15 to both sides

a (+15) = 4b - 15 (+15)

a + 15 = 4b

Next, divide 4 from both sides. Remember to divide from all terms.

(4a + 15)/4 = (4b)/4

b = (4a)/4 + (15)/4

b = a + 15/4

b = a + 3.75 is your answer

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7 0
3 years ago
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