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Likurg_2 [28]
3 years ago
11

Becky tried to evaluate an expreisson step by step

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
6 0

Answer:

step 2

Step-by-step explanation:

1) so in step 2 Becky make 4/5-5/4=0

this is wrong, as we have to make common denominators first:

16/20-25/20=-9/20

so now, we got -9/20

-9/20+7=

2) make common denominators again

-9/20+140/20=131/20

this is the right answer Hope this helps!

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Please help:)!!! thanks sm
castortr0y [4]
The answer is 12 because I just did the math
6 0
4 years ago
Let the positive numbers a, b, c. Prove that <img src="https://tex.z-dn.net/?f=%5Cfrac%7Ba%5E%7B2013%7D%2Bb%5E%7B2013%7D%2Bc%5E%
Serggg [28]

Answer:

I don't need to prove it, I already believe you

7 0
3 years ago
The volume of the plastic cylinder is 64. A glass cylinder has the same height and radius is half of the plastic cylinder radius
sp2606 [1]

Answer:

I am not sure if I'm correct, but I got 16

Step-by-step explanation:

lets look at the formula for cylinder volume:

V=π*r^(2)*h

now, lets plug in 64

64=π*r^(2)*h

h=64/(π*r^(2))

Volume of glass cylinder is

V=((0.5r)^2)*(64/(π*r^(2)))*π

V=0.25π*r^(2)*(64/(π*r^(2)))

V=16π*r^(2)/(π*r^(2)

V=16

8 0
3 years ago
Determine whether the data described are qualitative or quantitative:The weights of subjects in a clinical trial of a new drug.
Lynna [10]

Answer:

It is quantitative because they are looking at the weights which are numbers.

3 0
3 years ago
What is 2.47 divided by 0.7
maks197457 [2]
3.528571429

Hope This Helps!!
5 0
3 years ago
Read 2 more answers
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