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antoniya [11.8K]
2 years ago
10

I need help on the math question!

Mathematics
1 answer:
TEA [102]2 years ago
6 0

Answer:

  3 and 7

Step-by-step explanation:

You know from your multiplication tables that ...

  21 = 1×21 = 3×7

There are no other factorizations of 21 using integers. You may notice that the sums of these factors are ...

  1+21 = 22

  3+7 = 10 . . . . . . this is the pair of numbers you are looking for

The two numbers are 3 and 7.

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mel-nik [20]

Answer:

Here are some formulas and some info to get you started:

Step-by-step explanation:

Parallelogram:

Area = Base · Height

Triangle:

Area = 1/2 · Base · Height

Know that the height is the vertical dotted line. Also know that the horizontal dotted line attached to the base is not actually part of the base.

If you need any more help let me know, and good luck!

6 0
3 years ago
What equals -9 + 6 please help me pleassssssse
AURORKA [14]

Answer:

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Step-by-step explanation:

since the 9 in negative you subtract 9 by 6 and you get 3 then you put the negative sign in front of the 3 making it -3

3 0
2 years ago
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4 0
3 years ago
The ratio of the number of tests Jed passed this year to the number of tests he failed is 13:3. What percent of all tests Jed to
saul85 [17]

Answer:

18.75%

Step-by-step explanation:

Altogether he took 16 tests he failed 3 so we need to find 3 is what percent of 16.

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3 years ago
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How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16%
stiks02 [169]
Approximately 1.143 L of peroxide should be added to the original solution. 
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3 years ago
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