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3 years ago

HELP!! i will vote brainlest answer

Mathematics

1 answer:

Schach [20]3 years ago

8 0

Answer:

D. 18

Step-by-step explanation:

The polygon given is a 5-sided polygon (pentagon). Sum of all interior angles of a 5-sided polygon = (n - 2) * 180°

= (5 - 2) * 180 = 540°

Therefore:

95° + (7x - 4)° + (3x + 23)° + (9x - 6)° + 90° = 540°

Solve for x

95 + 7x - 4 + 3x + 23 + 9x - 6 + 90 = 540

Add like terms

198 + 19x = 540

19x = 540 - 198

19x = 342

x = 342/19

x = 18

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A group of 24 students have recess together. They are making teams to play a game. Each team has to have exactly 5 players, and

AysviL [449]

They can make 4 teams and have 4 players that won’t be in a team.

This is because 5*5 is 25 but they don’t have 25 players so you would have to go down which is 4*5=20. Sorry if that’s very confusing but hope that helps!

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3 years ago

A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit

sergiy2304 [10]

Answer:

95% Confidence interval: (39.43, 61.58)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = $50.50

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Sample standard deviation = 20

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.1447$

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95% Confidence interval: (39.43, 61.58)

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3 years ago

Todd placed 32 square tiles along the edge of his wooden dining room table, as shown below.

zalisa [80]

It would be 91 centimeters

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3 years ago

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One analog clock loses 3 minutes every 2 hours and another analog clock gains 3 minutes every 4 hours. At noon, the owner sets t

Nadusha1986 [10]

Answer:

12 noon

Step-by-step explanation:

Clock 1 loses 3 minutes every 2 hours. Now, 2 hours = 120 minutes.

This means, it has speed of 120 - 3 = 117 minutes for every 2 hours.

Thus, in 1 hours, it's speed = 117/2 = 58.5 min/hr

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Now, When he returns home in less than two weeks, the clocks show the same time.

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Thus, they will both be showing 12 noon.

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2 years ago

Evaluate<br> x(+3)<br> (3+y).<br> for x = 2, y = 5, and z = 1.<br> pls help

mart [117]

Answer

The answer is most likely 2 (or C).

Why?

The top of the question simplified into number is 2(5 + 3), which equals 16.

The bottom is (3 +5)1, which equals 8.

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(Hope this helps you! ^^)

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3 years ago

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