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Elan Coil [88]
3 years ago
9

PLS HELP BRAINLIEST pls pls pls

Mathematics
1 answer:
tamaranim1 [39]3 years ago
3 0

Answer:

x = 31°

Step-by-step explanation:

the triangle on the right is isosceles because two sides are equal, which means the two base angles are equal

if we subtract 56 from 180, then divide by 2 we have each base angle equal to 62°

the base angle, adjacent to the obtuse angle in the triangle on the right, is supplemental to the obtuse angle, so 180 - 62 = 118

the triangle on the right is isosceles also because two sides are equal, which means the two other angles are equal

if we subtract 118 from 180 we get 62, so each of the other two angles are 32°

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Taya2010 [7]

Answer:

an 88.25

Step-by-step explanation:

well 88%

5 0
2 years ago
Scores on an exam follow an approximately bell shaped distribution with a mean of 76.4 and a standard deviation of 6.1 points. A
Crazy boy [7]

Answer:

b) 95%

Step-by-step explanation:

We have been given that scores on an approximately bell shaped distribution with a mean of 76.4 and a standard deviation of 6.1 points. We are asked to find the percentage of the data that is between 64.2 points and 88.6 points.

First of all, we will find z-scores of each data point as:

z=\frac{x-\mu}{\sigma}

z=\frac{64.2-76.4}{6.1}

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Let us find z-score corresponding to normal score 88.6.

z=\frac{88.6-76.4}{6.1}

z=\frac{12.2}{6.1}

z=2

To find the percentage of the data is between 64.2 points and 88.6 points, we need to find area under a normal distribution curve that lie within two standard deviation of mean.

The empirical rule of normal distribution states that approximately 95% of data points fall within two standard deviation of mean, therefore, option 'b' is the correct choice.

6 0
3 years ago
Irina wants to build a fence around a rectangular vegetable garden so that it has a width of at least 10 feet. She can use a max
liraira [26]
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Answer:

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Step-by-step explanation:

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20.98 + 1.6784 = $22.65

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3 0
3 years ago
Confused lol i dont know
kaheart [24]

Answer:

A)

Hope that helps!

Step-by-step explanation:

6 0
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