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scZoUnD [109]
3 years ago
9

Help with these 2 questions pls

Mathematics
2 answers:
wariber [46]3 years ago
5 0

Answer:

6 .

4X + 2 + X = 8X +2 -3X

5X+2=5X+2

0=0

The two sides of the equation are always equal ,so 3 or any other number can be a solution for it .

7.

6X+6-3X+6= X+4

3X+12= X+4

2X= -8

X= -4

Hope it was helpful .

Vlad1618 [11]3 years ago
3 0

Step-by-step explanation:

I hope that everything I have written helps you.if I'm wrong write the answers in your paper doesn't match with mine please tell me I'll try it again.

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Sales tax on a guitar that costs $140 is $7 dollars what is the percent of sales tax? 140 = p% x 7
svlad2 [7]

Answer:

5%

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Answer:

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Step-by-step explanation:

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3 years ago
Mia wants to deposit $3,886 into savings accounts at three different banks: Bank of the US, 7/4 Bank, and Catch Bank. She will d
Phantasy [73]
A = deposit at US bank

b = deposit at 7/4 bank

c = deposit at Catch bank.

we know her total is 3886, thus  a + b + c = 3886.

now, we know whatever "b" is, the amount at US bank, "a", is 3 times that much, thus a = 3b.

(3b) + b + c = 3886.

whatever% of anything, is just (whatever/100) * anything.

we know Catch bank gets 45% of whatever the sum of the other two is, well, US bank gets "3b", 7/4 bank gets "b", their total is 3b + b = 4b, and Catch bank gets 45% of that, (45/100) * 4b

\bf \stackrel{US~bank}{3b}~+~\stackrel{7/4~bank}{b}~+~\stackrel{Catch~bank}{\frac{45}{100}(4b)}~=~3886
\\\\\\
4b+\cfrac{9}{5}b=3886\impliedby \textit{let's multiply both sides by }\stackrel{LCD}{5}
\\\\\\
20b+9b=19430\implies 29b=19430\implies b=\cfrac{19430}{29}\implies b=670

how much is it for the Catch bank?  well, (45/100) * 4(670).
6 0
3 years ago
A/2(b+c)(d-e)^2 if a=-10, b=10, c=9, d=2, e=5
bearhunter [10]

Answer:

(-86)

Step-by-step explanation:

\frac{a}{2} (b + c) {(d - e)}^{2}  \\  \\  \frac{ - 10}{2} (10 + 9) {(2 - 5)}^{2}  \\  - 50  - 45 {( - 3)}^{2}  \\  - 50 - 45 (- 3)( - 3) \\  - 50 - 45 + 9 \\  - 95 + 9 = ( - 86)

8 0
3 years ago
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