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2 years ago

When using the correct order of operations ,you always add before you subtract.

2 answers:

7 0

Is this a true or false question? Or a statement? I’ll answer in comments. Don’t worry I won’t take points without giving an answer :)

Reil [10]2 years ago

4 0

Answer:

False

Step-by-step explanation:

Additions and subtractions are done in the order they appear from left to right.

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An apartment complex has a floor plan with dimensions shown. To effectively air condition a room, 20 BTU’s are required for ever

kifflom [539]

12,900 BTU's are required to cool the room effectively.

Step-by-step explanation:

Step 1:

We must calculate the area of the entire shape to determine the minimum BTU's required to cool the room effectively.

It is made up of a semi-circle a rectangle, and a trapezoid.

Step 2:

The area of a semi-circle $=\frac{ \pi r^{2} }{2} .$

Here, the diameter is 20 feet so the radius is 10 feet.

The area of the semi-circle $=\frac{ \pi r^{2} }{2} =\frac{ (\pi) (10^{2}) }{2} = 157.079$ square feet.

The area of a rectangle $= (l)(w).$

The length of the rectangle is 22 feet and the width is 20 feet.

The area of a rectangle $= (l)(w) =(22)(20) = 440$ square feet.

The area of a trapezoid $=\frac{a+b}{2} (h).$

Here $a=12, b= 20, h= 3$ .

The area of a trapezoid $=\frac{12+20}{2} (3) = 48$ square feet.

Step 3:

The total area of the floor plan $=157.079+440+48 = 645.079$ square feet.

If 20 BTU's are required for a single square foot,

The number of BTU's for 645.079 square feet $= (645.079)(20)=12,901.58$ BTU's.

Rounding this off, we get 12,900 BTU's required to cool the room effectively.

7 0

3 years ago

70 points

Verizon [17]

Answer:

500

All of the above

paying your balances off in full

make credit card purchases that you know you can pay back within a month

0% interest for 1 year and 12% interest after that

paying your balances off in full

all of the above

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

How do I find the answer for this equation 20x+15y= 330, when x+y =18

Maru [420]

U divide 330 by 15 and get the quotient then do the same thing to 20 and add the quotients together to solve for x and y

6 0

3 years ago

The cost of grapes was $0.88 a pound. Change bought 4.5 pounds. Find the amount he paid.

Schach [20]

Answer:

$3.96

Step-by-step explanation:

If he gave $.88 per each pound he bought all you have to do is multiply $.88 by how many pounds he bought 4.5. $.88x4.5 equals $3.96

3 0

2 years ago

Read 2 more answers

Solve the Mode,Mean,Median,and Range

Semmy [17]

67, 66, 67, and 45, respectively.

4 0

3 years ago