The table shows the amount earned for washing cars. How much is earned for washing 25 cars? 3 cars=$13.50, 6 cars=$27, 9 cars=$40.50, and 12 cars=$54

Answers

Answer 1

Answer: You need to find out how much it costs to wash one car, so:

3×=13.50
Divide both sides by 3.
x=4.5 per car.
Now multiply 4.5 by 25 which should give you $112.50

Related Questions

PLEASEEE HELP ME W DIS!!! I RLLY NEED TO FINISH!!
What's substitution for y=4x-1;y=2x-5
-2y > 2 a. a b. b c. c d. d
Two points can lie in two different lines
The equation of line k is y+3= – 1 2 (x–7). Perpendicular to line k is line , which passes through the point (7,6). What is the equation of line ?

Katherine is three times older than Joel now. In twenty years Katherine will be six years older than Joel. How old is Katherine now?

Answers

She is currently 9 years old.

If Katherine is 9, and Joel is 3, 20 years later they'll be 29 and 23. Katherine is 6 years older than him.

k = 3*j;
k + 20 = 6 + (j + 20) => k = 6 + j; but k =3*j => 3*j = 6 + j => j = 3( Joel has 3 years) and k = 9 (Katherine has 9 years);

Given the equation 4x + 2y = 9, which equation below would cause an inconsistent-independent system?A:6x + 12y = 13
B: 2x + y = -6
C:x - 2y = 7
D:8x - 4y = -5

Answers

Inconsistent-independent system means that there are no solutions.
Graphically the lines of those equations will never cross - the lines are parallel.

So when the two lines are parallel?
When they have the same A factors.

So when you have an equation 4x+2y=9 we need to rewrite it to
y= -2x+9/2
So the A factor is -2 (it is the number with x) and the B factor is 9/2

So all we need to do now is to find an equation with the same A factor.

Lets rewrite equations in answers:
A: 6x+12y=13 -> y=-1/2x+13/12 A=-1/2 - so it is not an equation we are looking for
B: 2x+y=-6 -> y=-2x-6 A=-2 - this is an equation we were looking for.
C: x-2y=7 -> y=1/2x-7/2 A=1/2 - so it is also not a good answer

The answer is B: the equation 2x+y=-6 will cause the inconsistent-independent system with the given equation.

Suppose y varies directly with x, and y =24 when x=8. what is the value of y when x=10?

Answers

The value of y when x is equal to 10 is 30. This is because for every value of x the value of y is 3. This can be known if you divide 24 by 8 you get 3. So if x=10 then y would equal 30.

Identify the value of p.

p = 11
p = 10
p = 12
p = 13

Answers

Answer:

Step-by-step explanation:

You may recall that (5, 12, 13) is a Pythagorean triple. That would tell you ...

p = 12

If you have not memorized a few useful Pythagorean triples, you can use the Pythagorean theorem to solve for p. The sum of squares of the sides is the square of the hypotenuse:

5² +p² = (p+1)²

p² +25 = p² +2p +1

24 = 2p . . . . . . . . subtract p²+1 from both sides

p = 12 . . . . . . divide by 2

_____

Additional comment

Some of the Pythagorean triples commonly seen in algebra and geometry problems are ...

(3, 4, 5), (5, 12, 13), (7, 24, 25), (8, 15, 17), (9, 40, 41)

Of course, multiples of these are used, too. For example, (6, 8. 10) is a multiple of the (3, 4, 5) triple.

Answer:

Step-by-step explanation:

5^2 + p^2 = (p+1)^2

25 + p^2 = p^2 + 2p + 1

25 = 2p + 1

24 = 2p

12 = p

Find the vertex of the function.

Answers

Answer:

Step-by-step explanation:

the vertex of the function is (-2, -1)

the price of a notebook was $3.15 yesterday. today, the price rose to $3.40 . find the percentage increase. round your answer to the nearest tenth of a percent.

Answers

Yesterday = $3.15
Today = $3.40

% Increase = ((3.40 - 3.15) / 3.15) * 100%

= (0.25/3.15) * 100%

≈ 0.0794 * 100%

≈ 7.94 %

≈ 7.9 % to the nearest tenth.

Final answer:

The price of the notebook experienced a percentage increase of 7.9%.

Explanation:

The subject of this problem is in the area of mathematics, specifically on percentage increase. To find the percentage increase in the price of the notebook, you first find the difference in price. The difference is $3.40 - $3.15 = $0.25. Next, you divide the increase by the original price, which gives you: $0.25 / $3.15 = 0.079365. Then, to turn this into a percentage, multiply the result by 100 to get 7.9365%. Rounding this to the nearest tenth, we get 7.9%.

Learn more about percentage increase here:

brainly.com/question/33932701

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