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3 years ago

13

Hi, is there anyone that could explain this?

1 answer:

DiKsa [7]3 years ago

3 0

Answer:

x° = 50°

Step-by-step explanation:

Since all angels on a triangle add up to 180°, we can start from there. We also can see since both angles have the exact same measurements, angle x and the unnamed angle must measure to the same degrees. We can now do 180° - 80° = 100° That leaves the two mystery angles at 100°/2 = 50°.

Therefore, x° = 50°.

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A sail is in the form of a right triangle that is four times as high as it is wide.The sail is made from 32 square meters of mat

Veronika [31]

5x/2=32

5x=64

x=12.8 (width)

4x=51.2 (length)

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3 years ago

choose an expression for the following phrase. fifteen divided by unknown number. A) (3y)(3) B) y/15 C) 15/y D (5y)(3)

Liula [17]

Answer:

C) 15/y

Step-by-step explanation:

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3 years ago

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At the beginning of a basketball season, the panthers won 20 games out of 50 games. At this rate, how many games will they win i

Anton [14]

Answer:

They will win 48 games in a 120 game season.

Step-by-step explanation:

The team won 20 games out of 50; that is a 20:50 ratio, that is equal to x:120. x is the amount of games won in the 120 game season.

Set up the ratios like this:

$\frac{20}{50}$ = $\frac{x}{120}$

cross multiply the numerators and denominators to get this:

20*120 = 50x

solve for x:

2,400 = 50x

x = 48

8 0

3 years ago

A group of 54 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic

aliya0001 [1]

Answer:

P-value = 0.4846

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4.73

Sample mean, $\bar{x}$ = 4.35

Sample size, n = 51

Alpha, α = 0.05

Sample standard deviation, s = 3.88

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 4.73\\H_A: \mu \neq 4.73$

We use Two-tailed z test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{4.35 - 4.73}{\frac{3.88}{\sqrt{51}} } = -0.699$

Now, $z_{critical} \text{ at 0.05 level of significance } = \pm 1.96$

We can calculate the p-value with the help of standard normal table.

P-value = 0.4846

Since the p-value is higher than the significance level, we fail to reject the null hypothesis and accept it.

We conclude that this college has same drinking habit as the college students in general.

7 0

4 years ago

Check my answer please? I'll report if you just say yeah and it's not correct lol.

Elena-2011 [213]

Yes, set up your proportion: x/21 = 10/14
Cross multiply 14x = 210
Divide both sides by 14 and x= 15 cm

7 0

3 years ago

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