PLEASE ANSWER THIS QUESTION!!!

The power, P (watts), of a car engine is proportional to the square of its speed, s (m/s).
When s=35, P=2200.
Work out the power (to 1 DP) when the speed is 40 m/s​

Answers

Answer 1

Answer:

THE ANSWER!!!!!!!!!!

Step-by-step explanation:

The power, P (watts), of a car engine is proportional to the square of its speed, k%28m%2Fs%29; it means if you have two different powers and speeds, you will have a proportion

P%3Ak%5E2=P%5B1%5D%3Ak%5B1%5D%5E2 or

P%2Fk%5E2=P%5B1%5D%2Fk%5B1%5D%5E2

When given:

k=35, P=2200

Work out the power P%5B1%5D (to 1DP) when the speed is k%5B1%5D=40%28m%2Fs%29

so,

P=2200

k=35

k%5B1%5D=40

and you need P%5B1%5D

2200%2F35%5E2=P%5B1%5D%2F40%5E2

2200%2F1225=P%5B1%5D%2F1600

1.79592=P%5B1%5D%2F1600

1.79592%2A1600=P%5B1%5D

P%5B1%5D=2873.5 watts


Related Questions

Tell whether the fraction is in the simplest form. Write yes or no

(Please answer all of them in order!!)

4 over 10
2 over 8
3 over 5
4 over 12
6 over 10
3 over 6

Answers

1. No
2.No
3.Yes
4. No
5. Yes
6. No

Answer: 4/10 = 2/5

2/8 = 1/4

3/5 = 3/5

4/12 = 1/3

6/10 = 3/5

3/6 = 1/2

Step-by-step explanation:

4/10 = 2/5

4/10 is not in its simplest form.

Both 4 and 10 can be divided by 2.

Therefore, 4/10 = 2/5

2/8 = 1/4

2/8 is not in its simplest form

2 / 2 = 1

8 / 2 = 4

Both 2 and 8 can be divided by 2, therefore, 2/8 = 1/4

3/5 = 3/5

3/5 is in its simplest form

3 and 5 are prime, so they don’t have any factors other than 1 and itself so they wouldn’t be able to be simplified.

4/12 = 1/3

4/12 is not in its simplest form

4 / 4 = 1

12 / 4 = 3

4 and 12 can be divided by 4, resulting in 1 and 3. Therefore, 4/12 = 1/3.

6/10 = 3/5

6/10 is not in its simplest form

6 / 2 = 3

10 / 2 = 5

6 and 10 can both be divided by 2, resulting in 3/5. Therefore, 6/10 = 3/5

3/6 = 1/2

3/6 is not in its simplest form

3 / 3 = 1

6 / 3 = 2

Both 3 and 6 can be divided by 3, resulting in 1/2

Therefore, 3/6 = 1/2

Short Answers:

4/10 = 2/5

2/8 = 1/4

3/5 = 3/5

4/12 = 1/3

6/10 = 3/5

3/6 = 1/2

Joseph owes his mother $12.25. He borrows $6.50 more from his mother. Which of the following best represents Joseph's debt to his mother?

Answers

12.25 + 6.50 = 18.75

Answer:

18.75.

Step-by-step explanation:

If he already owes his mother 12.25 and borrows 6.50, we can add those numbers up to get the total amount of how much he owes his mother.

12.25 + 6.50 = 18.75

Therefore, Joseph's debt to his mother can be represented using the equation above.

In the example function, could one side length ever
produce two different perimeters? Explain.

Answers

Answer:

no

Step-by-step explanation:

Đa thức P= 4x^2 -12x+9

Answers

Answer:

kciyyyyfdttftuttdciiiiifffffccccccutyyttttdccccckkff

hcucickkciffiiiiifiyffyysuatyyggHZZ£;YYYYYRRtrTyY56644%55646776-755522#3435%5$$4

The answer would be (2x-3)^2

Which value of y makes the equation 7.2 - y=6?
SELECT ONE:
y=43.2
y=1.2
y=0.2
y=13.2

Answers

Answer:

y=1.2

Step-by-step explanation:

7.2-1.2=6

19(x) = -x – 3, solve for a when g(x) = 6.
solve for x

Answers

Answer:

x=[tex]-\frac{9}{19}[/tex]

Step-by-step explanation:

X=-9/19 because the math says so

HELP Please Will give Brainliest to first correct answer

Answers

Answer:

choose B......B is the right answer

Answer:

B. -(x - 1)/5 + 13

Step-by-step explanation:

combine like terms: 9 - (x - 1)/5 + 4 --> - (x - 1)/5 + 4 + 9--> - (x - 1)/5 + 13

find the point of the line segment joining the points (-2,-1) and (-10,4)

(type an ordered pair)

the midpoint is ____​

Answers

Answer:

( - 6, 1.5 )

Step-by-step explanation:

( x1, y1 ) = ( - 2, - 1 )

Here,

x1 = - 2

y1 = - 1

( x2, y2 ) = ( - 10, 4 )

Here,

x2 = - 10

y2 = 4

Formula : -

Mid - point = ( x1 + x2 ) / 2, ( y1 + y2 ) / 2

Mid - point = ( - 2 - 10 ) / 2, ( - 1 + 4 ) / 2

                  = - 12 / 2, 3 / 2

Mid - point = ( - 6, 1.5 )

What are the coordinates of Point A (-2,-6) after a rotation 270° Counter Clock-Wise?

Answers

Answer:

(2,-2) or (0,4)

Step-by-step explanation:

1 2/3 ÷ 1/4
2 4/7 x 3/5
3 5/6 ÷ 1/2
4 8/9 x 5/6
5 3/4 ÷ 5/6
6 7/8 x 1/2
7 2/7 ÷ 5/6

Answers

Answer:

6.6

Step-by-step explanation:

Answer: 6

Step-by-step explanation:


pls help this is so harddd for meee

Answers

Answer:

B

Step-by-step explanation:

Tell me if im right

:)

B because its on the y axis and thats what there asking for and its positive

please help me with this

Answers

Answer:

42.5 square units

Step-by-step explanation:

To solve, we can split this shape up into 4 known shapes:

2 unit by 2 unit triangle

2 unit by 2 unit square

2 unit by 5 unit triangle

3.5 unit by 9.0 unit rectangle

Now let's solve these areas:

2 x 2 = 4 / 2 = 2

2 x 2 = 4

2 x 5 = 10 / 2 = 5

3.5 x 9.0 = 31.5

Then add all these values together:

2 + 4 + 5 + 31.5 = 42.5

Question 8 of 10
Solve 4x- c= k for x.
A. x= 4(k+ c)
B. x=k-c/4
C. x = 4(k-c)
D. x=k+c/4
SUBMIT

Answers

Answer:

D. x=k+c/4

because:

4x-c= k

4x=k+c

x=k+c/4

Someone please answer this?

Answers

Answer:

y = 2x + 5

Step-by-step explanation:

First, you must choose two ordered pairs from the table to solve for the slope (m):

Let (x1, y1) = (0, 5)

(x2, y2) = (1, 7)

Substitute the given values into the following slope formula:

[tex]m = \frac{y2 - y1}{x2 - x1} = \frac{7 - 5}{1 - 0} = \frac{2}{1} = 2[/tex]

Therefore, the slope (m) = 2.

The y-intercept is the point on the graph where it crosses the y-axis, and has coordinates (0, b ).  It is also the value of y when x = 0. Looking at the given table, (0, 5) reflects the description of the y-intercept. The y-intercept (b) is the y-coordinate of (0, 5).

Given the slope (m) = 2, and y-intercept (b) = 5, the linear equation is:

y = 2x + 5

Please mark my answers as the Brainliest if you find my explanations helpful :)

Slop is 2, y-intercept is (0,5) and equation is 2x+5

What is the slope of the line passing through the points (-3, 4) and (2, - 1)? A -1
B 1
C 3/5
D - 5/3​

Answers

Answer:

A

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 3, 4 ) and (x₂, y₂ ) = (2, - 1 )

m = [tex]\frac{-1-4}{2-(-3)}[/tex] = [tex]\frac{-5}{2+3}[/tex] = [tex]\frac{-5}{5}[/tex] = - 1 → A

Light bulbs cost £3.40 each.
Yasmin buys as many as she can with £30.
How much change should she get?
Give your answer in pounds, £.

Answers

Answer:  2.80 pounds

======================================================

Work Shown:

x = number of light bulbs

3.40x = total cost to buy x light bulbs, cost is in pounds

3.40x = 30

x = 30/(3.40)

x = 8.823529 approximately

Rounding down, we get 8

Note that,

3.40*8 = 27.20 pounds which is under budget3.40*9 = 30.60 pounds which is over budget

Therefore, the highest number of bulbs that can be bought is 8.

The change given will be 30-27.20 = 2.80 pounds

Write an equation in slope intercept form for the line perpendicular to y = 2x - 3 that passes through the point (-3, -3)

Answers

Answer:

y=-1/2x-9/2

Step-by-step explanation:

check picture

The equation of the line perpendicular to y = 2x - 3 that passes through the point (-3, -3) is y = (-1/2)x - 9/2 in slope-intercept form.

To find the equation of a line perpendicular to y = 2x - 3, we need to determine the slope of the original line and then find the negative reciprocal of that slope.

The original line has a slope of 2. The negative reciprocal of 2 is -1/2.

Now, we have the slope (-1/2) and the point (-3, -3) that the perpendicular line passes through.

We can use the point-slope form of a linear equation to write the equation of the line:

y - y1 = m(x - x1)

Substituting the values:

y - (-3) = (-1/2)(x - (-3))

y + 3 = (-1/2)(x + 3)

Expanding and simplifying:

y + 3 = (-1/2)x - 3/2

y = (-1/2)x - 3/2 - 3

y = (-1/2)x - 3/2 - 6/2

y = (-1/2)x - 9/2

Therefore, the equation of the line perpendicular to y = 2x - 3 that passes through the point (-3, -3) is y = (-1/2)x - 9/2 in slope-intercept form.

To know more about  slope, here

https://brainly.com/question/16949303

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A music store originally purchased a piano at a cost of $892.03 and marked it up 125%. After a few weeks, however, the store discounted the piano 50% in order to make room for new merchandise. What was the discounted price?

Answers

Answer:

$557.52

Step-by-step explanation:

1. Find the marked up price.

125% = 1.25

$892.03 x 1.25 = $1,115.04

2. Find the discounted price.

50% = 0.5

$1,115.04 x 0.5 = $557.52

Answer:

1003.54

Step-by-step explanation:

Hope this helps! ;)

Use the polygon tool to draw a right triangle with hypotenuse AB?​

Answers

Answer:

in the -1,-1

Step-by-step explanation:

You are buying a new camera. The table shows the prices of cameras in a store
advertisement. You are willing to pay the mean price with an absolute deviation of at most
$102.

$890 $750
$650 $370
$660 $670
$450 $650
$725 $825

Your friend helped you with a list of steps to follow so you’ll find how many of the camera
prices meet your condition?
Step 1:
Find the mean of the given data.
(Search for: How to find the mean of a given data set?

Answers

$980 $670 Step-by-step explanation:

Express the ratio as a fraction in simplest form. 10 yards to 10 feet

Answers

Answer:

The ratio is 3:1

Step-by-step explanation:

[tex]\frac{10 yards}{10 feet}[/tex]

We know, 1 yard is equal to 3 feet

So, [tex]\frac{10 yards X 3}{10 feet}[/tex] is equal to [tex]\frac{30 feet}{10 feet}[/tex] is equal to 3:1

If you find this solution helpful, please mark brainliest

(-11, 12),(-4,-9) what is the slope

Answers

Answer:

m = -21 / 7 = -3 / 1 = -3

Step-by-step explanation:

i think im not sure but i hope it helps and good luck!

Last year a popular app was downloaded 2.47 x 10 to the 8th power write the number of time the app was downloaded in standard form.

Answers

Answer:

247,000,000 times

Step-by-step explanation:

Determine the relationship between the two triangles and whether or not they can be proven to be congruent. ​

Answers

Answer:

If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.

Step-by-step explanation:

[tex]\sf HELP \: ME\:!!!![/tex]
[tex]\sf (-5x+1)(-2)[/tex]

Answers

Answer:

=>10x-2

Step-by-step explanation:

=>(-5x+1)(-2)

=>-2(-5x+1)

=>-2(-5x+1)

=>10x-2

Answer:

10x-2

Step-by-step explanation:

(-5x+1)(-2)

-2×-5x-2

10x-2

a sum of money is divided among ethan June way and Raj in the ratio of 5:6:9 after eating gave $50 to his mother the ratio becomes 3:4:6 find the amount of money ethan has after giving $50 to his mother​

Answers

The answer you are looking for is 35


Including a 5% sales tax, an inn charges $189 per night. Find the inn's nightly cost before the tax is added.

Answers

The nightly cost is $18 per night
18 per night the cost

Evaluate:
bx(b – X) – b if b=5 and x = 3

Answers

Basically replace the letters in the equation with their corresponding numbers and then solve the equation like normal. (Replace b with 5, since b=5) (replace x with 3, since c=3)

Identify the type of function explain

Answers

Step-by-step explanation:

it is a quadratic function

it is because it satisfies the equation f(x)= -3-5x+4x^2

The length of a square table is 1.25m. An ant walks around the edge of the table.How far does the ant walk?​

Answers

Answer:

5m

Step-by-step explanation:

1.25m multiply by 4 sides equals 5m

The length of which ant walk will be the same as the perimeter of the square thus it will be 5 meters.

What is the perimeter?

Perimeter is the addition of an external measure of sides it will always positive.

Perimeter of square = side + side + side + side

Given a table in form of a square,

Side of square = 1.25 m

The external measure of side = length of ant walk

1.25 + 1.25 + 1.25 +1.25 = Length of ant walkt

Length of ant walk = 5 meters.

Hence "The length of which ant walk will be the same as the perimeter of the square thus it will be 5 meters".

To learn more about Perimeter,

https://brainly.com/question/6465134

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