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spayn [35]
3 years ago
9

Samuel helps his brother paint walls during his summer vacation he charges $10 for the first room and $5 for each additional roo

m he paint what equation could be used to find out how many additional rooms he would have to paint to make $50 at one house
Mathematics
1 answer:
Delicious77 [7]3 years ago
5 0

10+5x=50
subtract ten from both sides
5x=40
divide five from both sides
x=8
samuel will need to paint 8 additional rooms
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Tyler works in retail where she earns $10.50 per hour. She also earns $15 for every new credit account she gets customers to ope
Hitman42 [59]
A 
coefficient = 10.50 or 15, both real numbers that qualify variables 
variable = c and h 
constant = 50 

B 
10.50h + 15c + 50 
10.5 x 37 + 15 x 12 + 50 
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C 
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<span>It is fixed until the next raise.

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4 0
3 years ago
Read 2 more answers
I need help with Q9 c, I’ve done a and b if it helps, b=325 but I am just stuck on question 9C, I know the answer is 500N (as it
777dan777 [17]

Step-by-step explanation:

I know you've already done parts a and b, but I'll show the work for that before I do c.

Draw two free body diagrams, one for the car and one for the trailer.  The car pulls the trailer forward with a tension force T, so the trailer pulls backward on the car with an equal and opposite force T.

The car also has a 1200 N forward force from the engine, and a 200 N backwards force from resistance.

The trailer has a backwards resistance force of 100 N.

Sum of forces on the car:

∑F = ma

1200 − 200 − T = 900a

1000 − T = 900a

Sum of forces on the trailer:

∑F = ma

T − 100 = 300a

To solve the system of equations, first add the equations together.

1000 − 100 = 1200a

900 = 1200a

a = 0.75 m/s²

Plug back into either equation to find the tension force:

T = 325 N

Now for part c, draw new free body diagrams for the car and trailer.  This time, the car is pushing back on the trailer to slow it down.  So the trailer is pushing forward on the car with an equal and opposite force.  The magnitude of that tension force is given to be 100 N.

The car also has a backwards 200 N force from resistance, and a backwards brake force F.

The trailer has a backwards 100 N force from resistance.

Sum of forces on the car:

∑F = ma

100 − 200 − F = 900a

-100 − F = 900a

Sum of forces on the trailer:

∑F = ma

-100 − 100 = 300a

-200 = 300a

a = -⅔

Plugging into the first equation:

-100 − F = 900 (-⅔)

-100 − F = -600

F = 500 N

4 0
2 years ago
SOMEONE PLEASE HELP ME
NemiM [27]

Answer:

1) b⁵⁴

2) 7⁷

Step-by-step explanation:

When you have an exponent raised to an exponent, like in #1, you simply multiply the exponents.

When you are dividing two numbers with exponents and they have the same base, like in #2, you subtract the denominator exponent from the numerator exponent.

7 0
3 years ago
Which statements are true about three-dimensional figures? Select two options. A sphere has no bases. A prism must have a triang
tiny-mole [99]

Answer:

The 2 correct answers are that a sphere does not have a base and that the lateral face of a cylinder is a rectangle.

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4 0
2 years ago
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