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Tanya [424]
3 years ago
12

Eight minus two times a number is equal to the number plus 17. Find the number.

Mathematics
2 answers:
GuDViN [60]3 years ago
6 0

Turn it into an algebraic equation.

2x-8=x+7

Combine like terms.

x=15

The number is 15.

navik [9.2K]3 years ago
3 0

the answer is 8-2n=n+17   n=-3

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m = 1

Step-by-step explanation:

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Name the algebraic property demonstrated in the example below.
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Commutative property of multiplication 

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Solve for X:<br> 1.) 3x-4=6x+5<br> 2.) 3x-4=6x+5<br> 3.) -2(1+7x) = -100<br> 4.) x - 1 + 3= - 2- x
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Read 2 more answers
Conduct the appropriate hypothesis test and compute the test statistic. A company that produces fishing line undergoes random te
andre [41]

Answer:

Option D) Yes, because the test statistic is -2.01

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 30 pound

Sample mean, \bar{x} = 29.1 pounds

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, s =  2 pounds

First, we design the null and the alternate hypothesis

H_{0}: \mu = 30\text{ pounds}\\H_A: \mu < 30\text{ pounds}

We use one-tailed(left) t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{29.1 - 30}{\frac{2}{\sqrt{20}} } = -2.012

Now,

t_{critical} \text{ at 0.05 level of significance, 19 degree of freedom } = -1.729

Since,                    

t_{stat} < t_{critical}

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis. Thus, there were enough evidence to conclude that the fishing line breaks with an average force of less than 30 pounds.

Option D) Yes, because the test statistic is -2.01

5 0
3 years ago
5 and 1/7 * 8 <br><br>HELP ME PLZ​
il63 [147K]

Answer:

41 1/7

Step-by-step explanation:

5 1/7 x 8

Convert 5 1/7 to improper fraction

5 1/7 = 36/7

Multiply.

36  x  8

----      --

7   x    1

288/7

Simplify.

41 1/7

---

hope it helps

8 0
3 years ago
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