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4 years ago

Which multiplication problem is modeled on the number line? 2(– 4) 4(2) 2(4) 4(– 2)

Mathematics

2 answers:

Sliva [168]4 years ago

5 0

Answer:

4(-2)

Step-by-step explanation:

yulyashka [42]4 years ago

3 0

Answer:

4(-2)

Step-by-step explanation:

The correct answer is 4(-2) becasue the leeps to each number has 2 spaces between them and they are moving to the left of the number line that means that it is -2, and there are 4 leaps.

Hopefuly this helped you.

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$1,778.29

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3 years ago

A gym charges a $49.95 activation fee and $17.50 per month for a membership. If you spend $364.95 for how many months do you hav

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18 months.

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3 years ago

Explain the following in complete sentences:

Soloha48 [4]

Answer:

The answer is that they are both paralleagrams.

Step-by-step explanation:

Hope this helps

8 0

3 years ago

Answers?? With work please

Naya [18.7K]

1.)-2
2)-2
3.)-3
4.)-1
5)1
6.)-6
7.)-6
8.)4
9.)0
10.)no solution
11.)-3
12.)all real numbers
13.)-1
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On working on the work for the first problem so u understand

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4 years ago

The chemistry class was making 300 gallons of 30% isopropyl alcohol. They mixed 12% with 42%. How much of each did they use?

alexgriva [62]

Answer:

The chemistry class mixed 120 gallons of 12% isopropyl alcohol and 180 gallons of 42% isopropyl alcohol.

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Amount of isopropyl alcohol made by the chemistry class = 300 of 30%

Amount of 12% isopropyl alcohol mixed by the chemistry class = x

Amount of 42% isopropyl alcohol mixed by the chemistry class = 300 - x

2. How much of each did they use?

Let's write our equation to solve for x, this way:

30% = 0.3, 12% = 0.12, 42% = 0.42

0.12x + 0.42 (300 - x) = 0.3 * 300

0.12x + 126 - 0.42x = 90

-0.3x = 90 - 126

-0.3x = -36

x = -36/-0.3

x = 120 ⇒ 300 - x = 180

Let's prove x = 120 is correct

0.12x + 0.42 (300 - x) = 0.3 * 300

0.12 * 120 + 0.42 (300 - 120) = 0.3 * 300

14.4 + 75.6 = 90

90 = 90

We proved x = 120 is correct

5 0

3 years ago