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enot [183]
3 years ago
15

Selena and Drake are evaluating the expression , when . Selena's Work Drake's Work Who is correct and why? Selena is incorrect b

ecause she should have substituted the values for the variables first, and then simplifed. Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables. Drake is incorrect because he should have simplified first, before substituting the values for the variables. Drake is correct because he substituted the values for the variables first, and simplified correctly. Mark this and return
Mathematics
2 answers:
Anit [1.1K]3 years ago
8 0

Answer:

The answer is B

Step-by-step explanation:

:D

Shtirlitz [24]3 years ago
7 0

Answer:

Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables.

I did this lesson i asked my teacher to help me but i did this problem on my own so i hope its right :)

Step-by-step explanation:

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Find the volume to the nearest cm3<br> 20 cm<br> 35 cm<br> 12 cm
riadik2000 [5.3K]
Answer: 10380cm^3

Explanation:

Find the volume of half cylinder:

V = (pi x r^2 x h)/2 (I use pi = 22/7 for simplifying)
V = 22/7 x 6^2/2 x 35
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V = 22/7 x 35 x 18
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V = 1980cm^3

Find the volume of the rectangle:

V = 20 x 35 x 12
V = 240 x 5 x 7
V = 1200 x 7
V = 8400cm^3

Find the volume of the whole shape:

V = 1980 + 8400
V = 10380cm^3

3 0
3 years ago
If 50 percent of x=66 then x =
sasho [114]

Answer:

132

Step-by-step explanation:

50 % means half

so 66 is half of whatever x is.

to find x you have to multiply 66 by 2 or add 66 to 66 which will give you 132 either way.

<em>Hope this helps you! have an amazing day :)</em>

7 0
3 years ago
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Minchanka [31]

Answer:

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Step-by-step explanation:

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avanturin [10]

Answer:

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Step-by-step explanation:

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