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Lesechka [4]
3 years ago
11

97) If wood flooring costs $39.97 per square yard, how much will it cost to cover a room 15 feet

Mathematics
1 answer:
Luda [366]3 years ago
6 0

Answer:

Step-by-step explanation:

Area  = lw = 15*25 = 375 sq.feet

Cost of wood flooring = 39.97 * 375 = $ 14988.75

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2a - 3b = -11<br> a + 3b = 8
dlinn [17]

Answer:

b = 3 and a = -1

Step-by-step explanation:

You have your given equation:

2a - 3b = -11

a + 3b = 8

You need to find what a and b is.

To find b:

2a - 3b = -11

-2a - 6b = -16

I multiplied a + 3b = 8 by -2. When you multiply a number you have to multiply all of them. You have to choose a number that would cancel out all of a.

So now your equation would look like this when you solve for b:

2a - 3b = -11

-2a - 6b = -16

-------------------

a - 9 = -27 then you divide -9 to -27 which is 3 so b = 3.

To find a:

2a - 3b = -11

a + 3b = 8

I multiplied a + 3b = 8 by -1 and 2a - 3b = -11 by -1 as well.

Your equation will look like this when you solve for a:

-2a + 3b = 11

-1a - 3b = -8

------------------

-3a = 3 then divide -3 to 3 which is -1 so a = -1.

Check to see if you have the correct answer by plugging in the number you got for a and b into the equation and solve.

1. 2(-1) -3(3) = -11

 -2 - 9 = -11

2. -1 + 3(3) = 8

   -1 + 9 = 8

8 0
3 years ago
Explain the unit measurement for volume
Hunter-Best [27]
The base unit of volume is the cubic meter, there are 1000 liters per cubic meter
6 0
3 years ago
How do I change 1 1/2 to a proper fraction?
Tanya [424]
2x1=2

2+1=3/2

=3/2 is the answer
8 0
3 years ago
Please solve the right triangle below. Round the decimals to the nearest tenth.
aniked [119]

Find AB using Pythagorean Theorem,

AB=\sqrt{12^2+9^2}=15.

A=\tan^{-1}(12/9)=53.1^{\circ}.

B=\tan^{-1}(9/12)=36.9^{\circ}.

Hope this helps.

7 0
3 years ago
HELP LOTS OF POINTS
Ray Of Light [21]

Answer:

16 units

Step-by-step explanation:

4+6+8=18

18-2=16

7 0
2 years ago
Read 2 more answers
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