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RSB [31]
3 years ago
11

it costs a carpenter $120 to make a rocking chair if he sells each chair for $160 how many chairs must he sell to make a profit

of $1,200
Mathematics
1 answer:
Serggg [28]3 years ago
6 0
Profit per chair
160−120
=40

Number of chairs
1,200÷40
=30. ..answer

Check your answer
160×30−120×30
=1,200
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Write the equation of the line that passes through (0,5) and is perpendicular to the line x = 3.
Alona [7]

Answer:

(0,5)x3=(15,5)

Step-by-step explanation:

3 0
3 years ago
The extreme water slide forms a 20 angle with the tower it leans against 80 feet above the ground find the length of the slide x
GarryVolchara [31]

Answer:

85.1 ft

Step-by-step explanation:

The extreme water slide forms a 20 angle with the tower it leans against 80 feet above the ground find the length of the slide x

We solve using the Trigonometric function of Cosine

cos y = adjacent/hypotenuse

y = angle = 20°

Adjacent = 80 ft

Hypotenuse = ?

cos 20 = 80/Hypotenuse

Hypotenuse = 80/cos 20

x = 85.134221798 ft

Approximately = 85.1 ft

Length of the slide = 85.1 ft

3 0
3 years ago
-(5a+6)=2(3a+8) what is the answer
ValentinkaMS [17]

Answer:

a = -2

Step-by-step explanation:

-(5a+6)=2(3a+8)

-5a -6 = 2*3a +2*8

-5a -6 = 6a +16

-5a -6a = 16+6

-11a = 22

a= -22/11

a = -2

4 0
3 years ago
A and b are positive integers. Find <img src="https://tex.z-dn.net/?f=-2a%2B3b" id="TexFormula1" title="-2a+3b" alt="-2a+3b" ali
lord [1]

A could be 2 while B could be 3, so -2a+3b turns into -4+9, which equals 5.

From what I know you can't really solve a a single equation with two-variables so it's just a matter of trial and error.

Just try plugging in a small number like 2 for a just to try it and you get 8b^2=72.

Divide everything by 8 to isolate b and you get that b^2=9.

Square root everything and you'll find that b=3. This is just one possible combination, I'm sure there are many more but this is obviously the one that was intended to be found.

Now that we know that a=2 and b=3 just plug them into the equation.

-2(2)+3(3)=?

-4+9=?

5

Sorry about having to use this ^ symbol, the equation maker is not working.

7 0
3 years ago
Simplify this expression 7p+6q-2p+q
Mariulka [41]

Answer:

a) 8x+6a

b)5q+7q

Step-by-step explanation:

a) we need to combine the like(same) terms(with same variable) together

same terms: 3x and 5x

                      2a and 4a

so

3x+5x=8x

2a+4a=6a

8x+6a

b)a) we need to combine the like(same) terms together

same terms: 7p-2p=5q

                     6q+q=7q

8 0
3 years ago
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