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inysia [295]
2 years ago
9

What’s 2 numbers that multiply to make -21 but add up to -4

Mathematics
1 answer:
irinina [24]2 years ago
4 0

Answer:

2 numbers that multiply to make -21 = 3 x (-7)

2 numbers that add up to -4 = 3 - 7

Step-by-step explanation:

2 numbers that multiply to make -21 = 3 x (-7) = -21

2 numbers that add up to -4 = 3 - 7 = -4

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frutty [35]

Answer:

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Step-by-step explanation:

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2 years ago
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3 years ago
Read 2 more answers
Gareth 30 students in a class and the ratio of boys to girls in the class is 2:3 calculate the number of goals
pishuonlain [190]

Answer:

<em>There are 12 boys and 18 girls</em>

Step-by-step explanation:

<u>Equations</u>

There are 30 students in a class. Let's call:

x = number of boys

Since the sum of boys and girls is 30:

30 - x = number of girls

The ratio of boys to girls is 2:3, thus:

\displaystyle \frac{x}{30-x}=\frac{2}{3}

Crossing denominators:

3x = 2(30 - x)

Operating the parentheses:

3x = 60 - 2x

Adding 2x:

5x = 60

Dividing by 5:

x = 60/5 = 12

x = 12

There are 12 boys and 30-12=18 girls

8 0
3 years ago
Which strategy should be used to correctly solve this problem?
hammer [34]
B, make a table of possible values

the best way to do it is actually not listed
to have max area with minimu perimiter, try to get the sides as close measure to each other as possible


I would pick B though

6 0
3 years ago
Tim needs 3 pounds of vegetables for a vegetable soup recipe.
klio [65]

Answer:

25/12 - pounds more vegetables

Step-by-step explanation:

first we need to put these variables into like terms

36/12 - 3

8/12 - 2/3

3/12 - 1/4

add the last two up and subtract from the first and you get how much you need left over

8 0
3 years ago
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