MATHEMATICS MIDDLE SCHOOL

A wide screen television display measures approximately 15 inches high and 27 inches wide. A television is advertised by giving the approximate length of the diagonal of its screen. How should the television be advertised?A) 36 in.
B) 31 in.
C) 30 in.
D) 21 in.

Answers

Answer 1
Answer: The answer would be 31 in.

First do the Pythagorean theorem. 

225+ 729= 954

Then find the square root of 954 which is 30.88 repeating, so round up to 31 in.
Answer 2
Answer: The answer would be B) 31 in.

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Write two ways to make 15

Answers

5 x 3 = 15
10 + 5= 15

An artist makes a scale drawing of a new lion enclosure at the zoo. The scale is 1 in : 25 ft. On the drawing, the length of the enclosure is 7.25 inches. What is the actual length of the lion enclosure in feet?

Answers

Answer:

The actual length of the lion enclosure is 181.25 feet.

Step-by-step explanation:

Given:

An artist makes a scale drawing of a new lion enclosure at the zoo.

The scale is 1 in : 25 ft.

On the drawing, the length of the enclosure is 7.25 inches.

Now, to find the actual length of the lion enclosure in feet.

Let the actual length of the lion enclosure in feet bex.

As given the  scale is 1 in : 25 ft.

So, 1 in is equivalent to 25 ft.

Thus, 7.25 inches is equivalent to x.

Now, to get the actual length of the lion enclosure by using cross multiplication method:

(1)/(25) =(7.25)/(x)

By cross multiplying we get:

x=181.25\ feet.

Therefore, the actual length of the lion enclosure is 181.25 feet.

Describe a situation where it is easier to use decimals than fractions , explain why .

Answers

When ur handling with money u would wanna use decimals instead of fractions e.g. $2.40 is a decimal
division, because the process is a lot shorter than using a fraction.

Calculate the height of 385cm of water
inside a cylinder of diameter 7cm.
​

Answers

Answer:

C

Step-by-step explanation:

The volume formula for a cylinder is A = πr²h where A, r, and h are area, radius, and height respectively. The radius is 1/2 the diameter which is 7 / 2 = 3.5. We are solving for h so we can write:

385 = 22/7 * (3.5)² * h

385 = 38.5 * h

h = 10
Answer

C

Explanation

List multiples to find the LCM of 27 and 45
A. 45
B. 675
C. 1, 215
D. 135

Answers

the answer is (D)135
The answer is 135

27- 27,54,81,108,135,162,189,216

45- 45,90,135,180,225

betsy, carl, and dave each live in different cities. the populations of cities are 194,032; 23,853 and 192,034. Betsy lives in with the least population. Carl does not live in the city with the greatest population. what is the population of dave's city?

Answers

the population of Dave's city is 23,853
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