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Wittaler [7]
3 years ago
12

First year of high school heh need a little help​

Mathematics
1 answer:
Luba_88 [7]3 years ago
7 0

Answer:

(12 + 3x)x

Step-by-step explanation:

(12 + 3)x = 12x + 3x = 15x

(12 + 3x)x = 12x + 3x²

15x

12x + 3x = 15x

They all equal 15x except for (12 + 3x)x

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valentina_108 [34]

Answer:

I think it is 9

Step-by-step explanation:

as for number one I did 5×7=35 overall and 15×21= 315

then I did 315÷35=9 which is the scale factor.

hope this is correct and help u understand:)

7 0
3 years ago
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3 Write a numerical expression to model the words. Subtract 1 from the product of 4 and 5.​
umka21 [38]

Answer:

Hello!

After reading the question you have provided I have come up with the correct numerical expression:

4x5-1

Step-by-step explanation:

To come up with this solution you need to keep in mind some of the terminoloy being used.

The word "subtract" comes from the action of subtraction

The word "product" comes from the action of multiplication

Thus, using those terminologies correctly, you can then deduce that when the question says "the product of 4 and 5" means "multiplying 4 and 5 together".

So you get the first part being 4x5

Then, you add in the last part of "subract 1" from the "product of 4 and 5":

4x5-1

<em>Remember to keep in mind the rule of "PEMDAS"</em>

You always need to keep the multiplication portion of the equation in front of any subtraction, or addition in any given equation.

7 0
2 years ago
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Let's say you take an exam worth 240 points and your score marked the 78th percentile of all the exam scores. Based on this you
gladu [14]

Answer:

28%

Step-by-step explanation:

78th percentile means 78% scored less than/equal to you.

100 - 78 = 22%

3 0
3 years ago
Isabella is writing her resume. She doesn’t have much work experience. She thinks she should leave an empty section on her resum
Karolina [17]

Answer:

No. It is not a good idea. She should write things she is good at or has done in the past. Leaving it blank will help not Isabella.

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3 years ago
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