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olga_2 [115]
2 years ago
6

Find an expression which represents the sum of (10x−7y) and (7x-8y) in simplest terms.

Mathematics
1 answer:
Juli2301 [7.4K]2 years ago
8 0

Answer:

17x - 15y

Step-by-step explanation:

(10x - 7y) + (7x -8y)

17x - 15y

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Isabella sells 36 tickets to the school talent show.Each ticket cost $14.How much money does Isabella collect for the tickets sh
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Which equation is equivalent to the given equation? x^2+16x=22
Vaselesa [24]

Answer:answer is a (x+8)^2=86

Step-by-step explanation:

x+8=±√

​86

​

​​

2 Break down the problem into these 2 equations.

x+8=\sqrt{86}x+8=√

​86

​

​​

x+8=-\sqrt{86}x+8=−√

​86

​

​​

3 Solve the 1st equation: x+8=\sqrt{86}x+8=√

​86

​

​​ .

x=\sqrt{86}-8x=√

​86

​

​​ −8

4 Solve the 2nd equation: x+8=-\sqrt{86}x+8=−√

​86

​

​​ .

x=-\sqrt{86}-8x=−√

​86

​

​​ −8

5 Collect all solutions.

x=\sqrt{86}-8,-\sqrt{86}-8x=√

​86

​

​​ −8,−√

​86

​

​​ −8

x

​2

​​ +16x−22=0

2 Use the Quadratic Formula.

x=\frac{-16+2\sqrt{86}}{2},\frac{-16-2\sqrt{86}}{2}x=

​2

​

​−16+2√

​86

​

​​

​​ ,

​2

​

​−16−2√

​86

​

​​

​​

3 Simplify solutions.

x=-8+\sqrt{86},-8-\sqrt{86}x=−8+√

​86

​

​​ ,−8−√

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​

​​

6 0
3 years ago
A factory requires 9 machines to make a toy
cestrela7 [59]

Answer:

18 machines

Step-by-step explanation:

9 machines give 24 mins... You need to reduce the time by half by adding using double the machines..

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