3 years ago

Find the sum of all the prime numbers between 20 and 40.

Mathematics

1 answer:

Helga [31]3 years ago

3 0

Answer:

120

Step-by-step explanation:

yw dude

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Step-by-step explanation:

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cluponka [151]

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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The sum of two numbers is 31.5. The difference is 5.25. Find the numbers

ANTONII [103]

X+y=31.5
x-y=5.25

add 2 equations
x+y+x-y=31.5+5.25
2x=36.75
x=18.375
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check : 18.375+13.125=31.5, 18.375-13.125=5.25
so
Answer:
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