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nikdorinn [45]
3 years ago
12

Help me please please help please

Mathematics
2 answers:
Dominik [7]3 years ago
7 0

Answer:

99

Step-by-step explanation:

180-81 = 99

Hope this helps!

Mila [183]3 years ago
5 0

Anwser: B

Step-by-step explanation:

*Both angle 3 & 4 make a linear angle

*A linear angle equals to 180 degrees

1) 180 -81 = 99 degrees

The anwser is B, hoped that helped ;)

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PLEASE CHECK THIS WILL MARK BRAINLIEST
VikaD [51]

Answer:

This time all of them are right

I'm not writing this to achieve points, I have already actually check and read through it :D

Good work mate

Step-by-step explanation:

7 0
3 years ago
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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
4 years ago
What is the sum of number 13
pychu [463]
Pretty simple, really - all you have to do us divide 509 by 14 before you're left with an answer of <span>36.35. Now, the number '36' is closer to 0 than 100, so we'll round down instead of up, therefore the number of floors to the building is 36! </span>
5 0
3 years ago
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What is the inverse function of d(x) = 2x - 4?
Naddik [55]
Let d(x) = 2x - 4

Or

y = 2x - 4

We have replace x = y

x = 2y - 4

Now Isolate "y"

x + 4 = 2y

Pass "2" dividing

(x + 4) / 2 = y

y = x/2 + 2

Or

d(x)^-1 = x/2 + 2

7 0
3 years ago
If Judy has 4 blouses and 5 skirts, how many different outfits of a blouse and skirt can she wear?
Aloiza [94]

Answer:

20

Step-by-step explanation:

i think but not fur shure

3 0
3 years ago
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