3 years ago

A Rectangular Room has a length of 3 more than its width. The perimeter of the room is 90. What is the width of the room?

Mathematics

1 answer:

nignag [31]3 years ago

4 0

The answer to your question is 21

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Solving equations 10z+3z+5=2(z-3)

Nesterboy [21]

Answer: Use the PEMDAS rule

Step-by-step explanation: 0z+3z+5=2(z-3)=

z= -1

you need to do the z numbers all together and the normal numbers together then subtract them to get -1

I hope that I help you

5 0

3 years ago

A cylindrical piece of iron pipe is shown below. The wall of the pipe is 0.75 inch thick, and the pipe is open at both ends:

Gnesinka [82]

Answer:

(A)398 cubic inches

Step-by-step explanation:

Given a cylindrical piece of iron pipe with the following dimensions:

Height = 12 inches
Diameter = 8 inches

Therefore: External radius =4 Inches

Since the wall of the pipe is 0.75 inch thick,

Internal Radius =4-0.75 =3.25 Inches

Volume of a Cylinder = $\pi r^2 h$

Inside Volume of the Pipe

$= \pi*3.25^2*12\\=398$ cubic inches$

The correct option is A.

6 0

3 years ago

Mario has 7 cups of milk. A one batch recipe for pancakes calls for 2/3 cup milk. To see how many batches he could make Mario fi

Inessa [10]

Mario's mistake is made when doing reciprocal.

7 / (2/3) =

I cannot divide by 2/3, but if I do reciprocal, I can multiply by 3/2. The seven comes first, so it should not be flipped.

Mario's mistake was when he flipped the 7 (or 7/1) to 1/7.

7 0

3 years ago

What is the domain of the function?

Fiesta28 [93]

Answer:

c. 0,100

Step-by-step explanation:

4 0

3 years ago

Round 120 to the nearest whole percent

Ahat [919]

Its 100 because its not rounded to the nearest whole like 200 because its less than 50 so it would round down

3 0

3 years ago