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3 years ago

Help pleaseeeeeeeeeeeee!

Mathematics

1 answer:

klio [65]3 years ago

7 0

Answer:

The answer is 7.2

9/10*z/8= (9/10)*8=z

9/10*8=7.2

z=7.2

Step-by-step explanation:

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a scale drawing of a school bus has a scale of 2 inches to 5 feet. if the length of the school bus is 4 inches on the scale draw

ddd [48]

7 would be the answer to this question

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2 years ago

Sergio is working on a research project involving the ages of students at Brooklyn College. After interviewing 500 students, he

Zinaida [17]

Answer:

The probability of of a randomly chosen student being exactly 21 years old.

= 1.293

Step-by-step explanation:

Step(i):-

Given Population size n = 500

Mean of the Population = 20 years and 6 months

= $20 + \frac{6}{12} = 20 +0.5 = 20.5 years$

Standard deviation of the Population = 2 years

Let 'X' be the range of ages of the students on campus follows a normal distribution

Let x =21

$Z = \frac{x-mean}{S.D}$

$Z = \frac{x-mean}{S.D} = \frac{21-20.6}{2} =0.2$

The probability of a randomly chosen student being exactly 21 years old.

P( Z≤21) = 0.5 + A( 0.2)

= 0.5 +0.793

= 1.293

6 0

3 years ago

1. Find the tangent of 40° .

iris [78.8K]

Answer:

0.8390996312 or .84

Step-by-step explanation:

6 0

3 years ago

Find the area of the figure.( sides meet at right angles.)picture below

Tema [17]

You can divide the figure as follows:

A vertical rectangle, 5 meters tall and 2 meters wide, on the top right.
A horizontal rectangle, 2 meters tall and 5 meters wide, on the bottom left
A 2x2 meters square on the bottom right, where the two rectangles meet.

The area of the rectangles is 5x2=10 meters squared, while the area of the square is 2x2=4 meters squared.

So, the total area is 10+4=14 meters squared.

5 0

3 years ago

WHOEVER IS RIGHT GETS BRAINLIST

pochemuha

The answer to the first question is b
I don’t know the answer to the second one sorry

4 0

2 years ago