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labwork [276]
2 years ago
7

Can someone help me?

Mathematics
2 answers:
ad-work [718]2 years ago
6 0
Right angle so ..
2x + x + 90=180
3x+90=180
3x=180-90=90 now…
X=90/3
X=30 degree hope you understand.
Korvikt [17]2 years ago
3 0

The sum of all the angles is 180, so we get the equation

x + 2x + 90 = 180

3x = 90

x = 30

Hope that helps!

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Think about a population proportion that you may be interested in and propose a confidence interval problem for this parameter.
o-na [289]

Answer: The confidence interval would be (0.2928,0.3672).

Step-by-step explanation:

Since we have given that

Total number of vehicles = 432

Number of SUVs sold = 142

So, it becomes,

\hat{p}=\dfrac{x}{n}=\dfrac{142}{432}=0.33

At 90% confidence interval,

z = 1.645

So, the confidence interval would be

\hat{p}\pm z\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.33\pm 1.645\sqrt{\dfrac{0.33\times 0.67}{432}}\\\\=0.33\pm 0.0372\\\\=(0.33-0.0372,0.33+0.0372)\\\\=(0.2928,0.3672)

Hence, the confidence interval would be (0.2928,0.3672).

8 0
2 years ago
you return several shirts to a store the receipt shows that the amount placed back on your credit card is -30.60 each shirt is -
vredina [299]

-30.60 divided by -6.12 = 5

4 0
3 years ago
Line M contains points (4,3) and (1,2). Write a possible equation of line K that is
mash [69]
I believe the answer is y = -3x + 15
This is what I got from calculating it but I haven’t done this type of equation in a while
6 0
2 years ago
lisa goes to school for 7 hours per day works 3 hours per day and sleeps 8 hours per day. what is the ratio of hours lisa works
frozen [14]

Answer:

ratio of hours lisa works to hours lisa sleeps= 3:8

Step-by-step explanation:

lisa goes to school for 7 hours per day lisa works 3 hours per day

Lisa sleeps 8 hours per day.

For the ratio of hours lisa works to hours lisa sleeps

ratio of hours lisa works to hours lisa sleeps= hours Lisa works/hours Lisa sleeps

ratio of hours lisa works to hours lisa sleeps= 3/8

ratio of hours lisa works to hours lisa sleeps= 3:8

4 0
2 years ago
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lubasha [3.4K]
The integers are x, x + 2 and x + 4

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x = 30/3 = 10

The least numbers is 10
Therefore, the numbers are 10, 12 and 14
4 0
3 years ago
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