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ipn [44]
3 years ago
10

Find the total surface area

Mathematics
2 answers:
Rina8888 [55]3 years ago
8 0
428,750 SA (7x7x5x5x7x5x10)
s2008m [1.1K]3 years ago
3 0

Answer:

46

Step-by-step explanation: 5+7+5+7+5+10+7= 46

Please mark as brainliest!!!!!

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Three persons EB and C work together on a job and finish it finish it in 18 days if E and be working together can finish the job
nikitadnepr [17]

Answer:  30 days

<u>Step-by-step explanation:</u>

Working together, E & B get 1/45 of the job done per day

Working alone, C gets 1/x of the job done per day

Working together, E, B, & C get 1/18 of the job done per day.

EB:\dfrac{1}{45}\qquad C: \dfrac{1}{x}\qquad EBC:\dfrac{1}{18}\\\\\\\\EB+C=EBC\\\\ \dfrac{1}{45}\ +\dfrac{1}{x}=\dfrac{1}{18}\\\\\\(45\cdot 18\cdot x)\bigg(\dfrac{1}{45}+\dfrac{1}{x}=\dfrac{1}{18}\bigg)\\\\\\.\qquad \qquad 18x+810=45x\\\\.\qquad \qquad \qquad 810=27x\\\\.\qquad\qquad \qquad  \large\boxed{30=x}

7 0
3 years ago
9(2j + 7 + 5j).
Ksivusya [100]
Answer 9(7j +7) is an equivalent expression.
8 0
3 years ago
Read 2 more answers
−5 2/3+3 1/4+(−713)=
LenaWriter [7]
−5 2/3+3 1/4+(−713) the answer is =
−715.416667
7 0
3 years ago
Read 2 more answers
Marie noticed that she was eating 2100 calories per day she began a diet and limited herself to 1300 calories per day. What is t
sasho [114]

Answer:

decrease of 38% (to nearest percent)

Step-by-step explanation:

Percent change = [ (difference between final and initial value) ÷ initial value] x 100

⇒ percent change = [(2100 - 1300) ÷ 2100] × 100 = 38% (to nearest percent)

6 0
3 years ago
Saved
faltersainse [42]
Its D. -18 hope this helps :D
5 0
3 years ago
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