MATHEMATICS MIDDLE SCHOOL

Compute the average (mean) from the data shown. (round to the nearest tenth){91, 91, 91, 97,65, 37, 41, 76, 87}
A)74.2
B)74.9
C)75.1
D) 75.4

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

The mean is the average so you must add them all up and divide them by the amount of numbers there are.

Answer 2

Answer:

Answer:

Step-by-step explanation:

Add all the numbers then divide by numbers of numbers their are

91+91+91+97+65+37+41+76+ 87= 676

676/9= 75.1111111111 and it goes on forever

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The value of y varies directly with x2, and y = 64 when x = 4.What is the value of y when x = 6?

an architect build a road 8 1/4 miles long. the next Road he built was 4 3/9 miles long. what is the combined length of the two roads?

Answers

the answer is
111/9 miles
or you can say
11 2/9 miles

Brandon begins his kindergarten year able to spell 10 words he's going to want to spell 2 new words every day right now

Answers

So what is the question????

What is the solution to the system of equations?x + y = 5
x - 2y = 2

(_,_)

Answers

{ x + y = 5 * ( 2 )
x - 2y = 2

2 x + 2 y = 10
x - 2 y = 2
_____________
3 x = 12

x = 12 / 3

x = 4

For y :

x + y = 5

4 + y = 5

y = 5 - 4

y = 1

S = ( 4, 1 )

hope this helps!

Multiply the second equation by -1 and add them together.

You get 3y=3
So y=1.

If y=1, x+1=5.
So, x=4.

(4,1)

What is 9/10 take away 4/10

Answers

$(9)/(10) - (4)/(10) = (9-4)/(10) =\boxed{\bf{(5)/(10)=(1)/(2)}}$

9/10 - 4/10 is just 9-4=6 and put that over 10 so you get 6/10. If you have to reduce just do it by 2 on both. 6/2= 3 and 10/2=5 so 2/5.

Find the volume of the cone. Leave your answer in terms of л18 л
54л
27л
12л

Answers

The volume of the cone is 18π

Option A is the correct answer.

What is a cone?

It is a shape of a christmas tree where there is a base of radius r and a top point called the apex.

The volume of a cone is V = (1/3)πr²h

We have,

The formula for the volume of a cone is:

V = (1/3)πr²h

where V is the volume, r is the radius, and h is the height.

Plugging in the given values, we get:

V = (1/3) x π x 3² x 6

V = 18π

Therefore,

The volume of the cone is 18π

Learn more about cones here:

brainly.com/question/13798146

#SPJ7

Answer:

18π

Step-by-step explanation:

You have to multiply the height and the width together and then multiply by pi but since it is in terms of pi it is 18π

An electrical tower casts a 120-foot shadow. At the same time, a 10-footstreet sign casts a shadow of 8 feet. What is the height of the tower?

Answers

Answer:

The height of the tower is 150 ft

Step-by-step explanation:

Let the height of the tower be H feet.

The corresponding sides will then be in the same proportion.

The ratio of the shadows will be in the same proportion as the ratio of the heights.

$(H)/(10)=(120)/(8)$

We multiply both sides by 10 to get:

$(H)/(10)* 10=(120)/(8)* 10$

$H=150$

Therefore, the height of the tower is 150 ft

Answer:

Height of the tower = 150 foot

Step-by-step explanation:

We need to find height of the tower with 120-foot shadow.

We have a 10-foot street sign casts a shadow of 8 feet.

$\texttt{Ratio of height to shadow height =}(10)/(8)=(5)/(4)$

We have

$\frac{\texttt{Height of tower}}{\texttt{Shadow height of tower}}=(5)/(4)\n\n\frac{\texttt{Height of tower}}{120}=(5)/(4)\n\n\texttt{Height of tower}=(5)/(4)* 120=150feet$