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lubasha [3.4K]
3 years ago
9

A study of a local high school tried to determine the mean amount of money that each student had saved. The study surveyed a ran

dom sample of 96 students in the high school and found a mean savings of 4000 dollars with a standard deviation of 500 dollars. Determine a 95% confidence interval for the mean, rounding all values to the nearest whole number.
Mathematics
1 answer:
mylen [45]3 years ago
7 0

I don't know sorry I will try and come back If I get it :D

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Answer:

She has 499.3$

Step-by-step explanation:

870+35.90+35.90+150-82.50-10-500

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What percent of 156 is 78
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Item 12
Akimi4 [234]

y -3x =1

add 3x to each side

y = 3x+1

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Kenneth wants to sew a tent, including the bottom so that it is entirely enclosed. He has a rectangular piece of canvas with dim
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Based on the calculations, the depth of tent is equal to 12 feet.

<h3>How to calculate the depth of the tent?</h3>

Based on the diagram (see attachment) and information provided, we can logically deduce the following parameters (points):

  • Triangle ABC is an isosceles triangle (AB = AC).
  • The front and back of the triangle are identical triangles.
  • Side AD is perpendicular side BC.
  • CD is the midpoint of BC i.e CD = BC/2 = 6/2 = 3 feet.

Next, we would determine the height of the right-angled triangle (ADC) by applying Pythagorean theorem:

AC² = AD² + DC²

AD² = AC² - DC²

AD² = 5² - 3²

AD² = 25 - 9

AD² = 16

AD = √16

AD = 4 feet.

Also, we would determine the area of the triangle (ABC):

Area = 1/2 × b × h

<u>Where:</u>

  • b is the base area.
  • h is the height.

Substituting the given parameters into the formula, we have;

Area = 1/2 × 6 × 4

Area = 12 feet².

Depth of tent = 3 × height of ADC

Depth of tent = 3 × 4

Depth of tent = 12 feet.

Read more on area of triangle here: brainly.com/question/21917592

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Which equation is equivalent to the given equation? 7m + 11 = -4 (2m +3)
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Answer:

15m=-23

Step-by-step explanation:

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