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Bogdan [553]
3 years ago
6

Which expression has an equivalent value to x^2 + 9x + 8 for all values of x?

Mathematics
1 answer:
pochemuha3 years ago
6 0
The first choice: <span>(x + 1)(x + 8)</span>. 
1+8=9
1*8=8
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Twice the difference of a number and 9 equals 8
ladessa [460]

Answer:

13 is the number.

Step-by-step explanation:

Given:

Twice the difference of a number and 9 equals 8.

Let the unknown number be 'x'.

Therefore, as per question:

The difference of 'x' and 9 = x-9

Twice the difference means 2 times the difference. So, we multiply 2 to the difference. Therefore,

2(x-9)

Now, the above expression is equal to 8. So, we equate the above expression to 8. This gives,

2(x-9)=8

Solving for 'x', we get:

Using distributive property of addition and distributing 2 inside the bracket. This gives,

2\times x-2\times 9=8\\\\2x-18=8\\\\2x=8+18\\\\2x=26\\\\x=\frac{26}{2}=13

Therefore, the unknown number is 13.

Now, we can verify our answer.

2(13-9)=26-18=8

Therefore, the answer is correct.

3 0
3 years ago
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IgorLugansk [536]

Answer:

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6 0
3 years ago
What is 2% as a fraction in simplest form
Zigmanuir [339]
All fractions start out of 100. 
2/100
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Gavin had 20 minutes to do a three-problem quiz. He spent 9 9/10 minutes on question A and 3 3/5 minutes on question B. How much
dalvyx [7]

Answer:

6 1/2 minutes

Step-by-step explanation:

9 9/10 = 9.9

3 3/5 = 3.6

9.9 + 3.6 = 13.5

13.5 = 13 1/2

20 - 13.5 = 6.5 = 6 1/2

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alexandr402 [8]

Answer:

.36 miles in one hour. sorry if I'm wrong.

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3 years ago
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