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malfutka [58]
3 years ago
8

PLEASE HELP! THANKS! The measures, in degrees, of the 3 angles of a triangle are given by 2x +1, 3x - 3, and 9x. What is the mea

sure of the smallest angle? A.) 13 degrees B.) 23 degrees C.) 29 degrees D.) 40 degrees please show how to solve this I GIVE THANKS!!!
Mathematics
1 answer:
drek231 [11]3 years ago
7 0
So all of the internal angles of a triangle will add up to 180 degrees.  So if we add all of the expressions given and set them equal to 180, we can solve for x, then solve for each angle...

(2x + 1) + (3x - 3) + 9x = 180
2x + 3x + 9x + 1 - 3 = 180
14x - 2 = 180
14x = 182
x = 13

Now we can substitute 13 into each expression to find the value of each angle...

2x + 1 =
2(13) + 1 =
26 + 1 = 27 degrees

3x - 3 =
3(13) - 3 =
39 - 3 = 36 degrees

9x =
9(13) = 117 degrees

So the 3 angles are 27 degrees, 36 degrees, and 117 degrees.

The smallest is 27 degrees

** Note-- I don't see 27 degrees in the answer choices you gave, so I double checked my math (I didn't find any mistakes).  Please check to see that the question is written correctly (pay close attention to plus and minus signs).
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Two coplanar lines that are perpendicular to the same line are parallel.
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Coplanar lines are <u>lines</u> that lie on the same <u>plane</u>.

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This theorem is true always, therefore, given statement is true always.

Answer: correct choice is A

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Which statements about the graph of f(x) =√x are true?
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Step-by-step explanation:

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anything but negative values!

So the first one is not correct because you can also take square root of 0,

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So because of this, C and D are both correct, E is correct because root  x is an increasing function. B is incorrect because (0,0) is an intercept.

5 0
3 years ago
The proportion of left handed people in the population is about 0.10. Suppose a random sample of 300 people is observed. (a) Wha
pantera1 [17]

Answer: (\hat{p})\sim N(0.10,\ 0.017)

Step-by-step explanation:

Sampling distribution of the sample proportion (\hat{p}) :

(\hat{p})\sim N(p,\ \sqrt{\dfrac{p(1-p)}{n}})

The sampling distribution of the sample proportion (\hat{p}) has mean = \mu_{\hat{p}}=p and standard deviation = \sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}.

Given : The proportion of left handed people in the population is about 0.10.

i.e. p=0.10

sample size : n= 300

Then , the sampling distribution of the sample proportion(\hat{p}) will be :-

(\hat{p})\sim N(0.10,\ \sqrt{\dfrac{0.10(1-0.10)}{300}})

(\hat{p})\sim N(0.10,\ \sqrt{0.0003})

(\hat{p})\sim N(0.10,\ 0.017)  (approx)

Hence, the sampling distribution of the sample proportion(\hat{p}) is (\hat{p})\sim N(0.10,\ 0.017)

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Answer:

4. 110 slices

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Step-by-step explanation:

For question for you divide the number of slices, 176, by the number of loafs, 8. this give give you a total of 22. you then take 22 and multiple if by 5, leaving your answer to 110 slices of bread.

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