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Alika [10]
3 years ago
7

3xy - 4 - 2y + 7y + 3​

Mathematics
2 answers:
Eddi Din [679]3 years ago
6 0

Answer: 3xy+5y−1

<u>Combine like terms</u>

3xy+−4+−2y+7y+3

(3xy)+(−2y+7y)+(−4+3)

3xy+5y+−1

nadya68 [22]3 years ago
4 0
I believe it’s 3xy-1+5y
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$32.00for a 14 2/9 km taxi ride. What is the cost per kilometer
KonstantinChe [14]

\begin{array}{ccll} \$&km\\ \cline{1-2} 32&14\frac{2}{9}\\[1em] x&1 \end{array}\implies \cfrac{32}{x}=\cfrac{14\frac{2}{9}}{1}\implies \cfrac{32}{x}=14\frac{2}{9}\implies \cfrac{32}{x}=\cfrac{14\cdot 9+2}{9} \\\\\\ \cfrac{32}{x}=\cfrac{128}{9}\implies 288=128x\implies \cfrac{288}{128}=x\implies \stackrel{~\hfill \textit{2 bucks and 25 cents}}{\cfrac{9}{4}=x\implies 2\frac{1}{4}}=x

4 0
2 years ago
The first side of a triangle is 7cm less than twice the second side. The third side is 4cm longer than the first side. The perim
Vinil7 [7]

Given:

First side(A): 2B - 7

Second side(B): B

Third side(C): B + 4

Plug in values:

A + B + C = 80

2B - 7 + B + B + 4 = 80

If you look at the coefficients only, you can rewrite the equation like this:

2B + B + B - 7 + 4 = 80

This means that 4B - 7 + 4 = 80

=4B - 3 = 80

= 4B = 80 + 3

B = 83/4, so you can either write B as 83/4 or as 20.75.

Checking your work:

A: 2(20.75) - 7 = 34.5

B: 20.75

C: 4 + 20.75 = 24.75

34.5 + 20.75 + 24.75 = 80cm.

Hope this helped.

3 0
3 years ago
Only 16 -22 even plz it's due tomorrow
sdas [7]
16: 8/25; 38%; .41
18: 84% 43/50; 7/8; .91
20: 26.8%; 2.26; 2 2/5; 2.62; 271%
22: 21/25= 84% so yes
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Simplify this algebraic expression completely
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the answer for your question is A :>

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Answer:

87 {6 \frac{?}{?} ?}^{2}

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