2 years ago

3 times the sum of 5 times a number and 4 is 7 times the difference twice the number and 5, what is the number?

Mathematics

1 answer:

Citrus2011 [14]2 years ago

3 0

Answer:

x=-47

Step-by-step explanation:

3(5x+4)=7(2x-5)

15x+12=14x-35

x+12=-35

x=-47

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Step-by-step explanation:

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Dafna1 [17]

$2.40714$

1) Let's evaluate that expression, given that a=4.9, b=-7, and c=-0.5

$\begin{gathered} a^3\div b^2+c^3 \\ (4.9)^3\div(-7)^2+(-0.5)^3= \\ \frac{4.9^3}{\left(-7\right)^2+\left(-0.5\right)^3} \\ \\ \frac{4.9^3}{48.875} \\ \\ \frac{117.649}{48.875} \\ \\ 2.40714 \end{gathered}$

Note that we have rewritten it as a fraction so that we can easily operate. Also, we have applied here the PEMDAS order of operations, prioritizing the exponents.

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1 year ago

Please help me with this

Masja [62]

Answer:

c = a - 16

Step-by-step explanation:

Given

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a - 12 = b

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a = c + 16 ( subtract 16 from both sides )

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2 years ago

Mr. Moore planted a tree in his backyard. His tree grew 3 1/3 feet over five years. if his tree grew at the same rate each year,

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Answer:

D. 2/3 per year.

Step-by-step explanation:

3 1

÷ 5

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