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3 years ago

Can anyone please help me with these math problems I need it for tomorrow

Mathematics

2 answers:

Sergeeva-Olga [200]3 years ago

3 0

I hope this helps!

25 is 7.8
26 is 8.3
27 is 14.5
28 is yes, they both ran the same distance because 7×5 is equal to 5×7. They both equal 35. So, both ran the same distance.

sertanlavr [38]3 years ago

3 0

For the 1st one it would be 7.8. This is because 7+0=7 and then adding a decimal when it is 0.8 as in your problem you add the 8 to the end not the beginning. The second one is 8.3 because anytime you multiply by 1 you get the same number. For the third problem you add what is in the parentheses because in PEMDAS you always start with parentheses. So, 4+7=11. Next, you will add 11 and 3.5 which is 14.5. I hope this helps!

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GenaCL600 [577]

Answer:

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Step-by-step explanation:

First we find the volume of the hollow ball. Then we find the mass using the volume and density.

Let R = exterior radius = 3 cm

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volume = (4/3)(pi)R^3 - (4/3)(pi)r^3

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3 years ago

Read 2 more answers

What percent of 59 is 44.1? Round the answer to the nearest<br> hundredth of a percent if necessary.

olga nikolaevna [1]

Answer:

133.78684807256

Step-by-step explanation:

step 1: We need the assumption that 44.1 is 100% since it is our output value

step 2: We need to represent the value we seek in x

step 3: From step 1, it follows that 100% = 44.1

step 4: In the same vein x% = 59

step 5: This give us a pair of simple equations:

100% = 44.1 (1)

x% = 59 (2)

step 6: by simplify dividing equation 1 by equation 2 and taking note of the fact that both the LHS (left hand side) of both equations have the same unit (%); we have

$\frac{100}{x} = \frac{44.1}{59}$