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3 years ago

I will mark brainliest for the best answer!!!! Please show FULL SOLUTIONS. THANK YOU.

Mathematics

1 answer:

fgiga [73]3 years ago

4 0

9514 1404 393

Answer:

x = 78

Step-by-step explanation:

The base angles of an isosceles triangle are congruent, so the sum of angles is ...

x° +x° +24° = 180°

2x +24 = 180 . . . . . collect terms

x + 12 = 90 . . . . . . . divide by 2

x = 90 -12 . . . . . . . . subtract 12

x = 78

_____

<em>Additional comment</em>

The base angle of an isosceles triangle is always the complement of half the third angle. That angle's bisector is an altitude, so divides the isosceles triangle into two congruent right triangles.

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A marketing consultant observed 40 consecutive shoppers to estimate the average money spent by shoppers in a supermarket store.

KonstantinChe [14]

Answer:

0.998 is the probability that the average money spent by a sample of 40 shoppers is within $10 of the actual population mean.

Step-by-step explanation:

We are given the following information in the question:

Standard Deviation, σ = $21.51

We are given that the distribution of average money spend is a bell shaped distribution that is a normal distribution.

Formula:

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

We have to find:

P( average money spent is within $10 of the actual population mean.)

$= P( z \leq \displaystyle\frac{10\times \sqrt{40}}{21.51}}) = P(z \leq 2.94)$

Calculation the value from standard normal z table, we have,

$P(z \leq 2.94) = 0.998$

6 0

2 years ago

What is the answer to 2 times 3.61 plus 2.4624 plus 1.7496 plus 1.7496

marissa [1.9K]

The answer is 13.1816

6 0

3 years ago

Read 2 more answers

Calcula y grafica la siguiente fracción afín y cuadratica y=3×2

salantis [7]

Answer:

y = 6

Step-by-step explanation:

You just multiply the 3 and the 2 which equals 6

5 0

2 years ago

What should be done first to evaluate the expression?<br> 6+8+ 4+ (4 x 5)2

mars1129 [50]

Answer: 40x+18

Step-by-step explanation:

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2 years ago

NO LINKS OR ANSWERING QUESTIONS YOU DON'T KNOW!!!!

Over [174]

9514 1404 393

Answer:

b. -150

Step-by-step explanation:

We usually take elevation to be positive above sea level, and negative below sea level. If the elevation is below sea level, it is negative. If it is within 200 ft of sea level, the magnitude of the negative number is 200 or less. That is, the elevation must satisfy ...

-200 ≤ elevation < 0

The only answer choice in that range is -150.

Ethan's elevation in feet could be -150.

5 0

2 years ago