jmcd10
08.03.2021 •
Mathematics
What is 2 plus 2?will give brainliest
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Ответ:
2 plus 2 is 4 i think
Step-by-step explanation:
Ответ:
2+2 = 22
Step-by-step explanation:
Ответ:
11.25
step-by-step explanation:
juan's ratio of violin to cello is
3/2.5
he practices the violin for 9 hours; this gives us the ratio
9/x
for his cello practice.
together we have the proportion
3/2.5 = 9/x
cross multiplying, 3(x) = 9(2.5)
3x = 22.5
divide both sides by 3:
3x/3 = 22.5/3
x = 7.5
juan practices his cello for 7.5 hours.
nina's ratio of viola to cello is
3/2
since she practiced the cello for the same amount of time as juan, that means she practices 7.5 hours. this gives us the ratio
x/7.5
and the proportion
3/2 = x/7.5
cross multiplying,
3(7.5) = 2(x)
22.5 = 2x
dividing both sides by 2,
22.5/2 = 2x/2
11.25 = x