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Irina18 [472]
2 years ago
7

The police estimate that for good road conditions the frictional force, F , on a skidding vehicle of mass, m, is given by F = 0.

8mg . A car of mass 450 kg skids to a halt narrowly missing a child. The police measure the skid marks and find they are 12.0 m long. Calculate the deceleration of the car when it was skidding to a halt.
Mathematics
1 answer:
gulaghasi [49]2 years ago
4 0

Answer:

Step-by-step explanation:

Physics questions and answers. A police officer investigating an accident estimates that a moving car hit a stationary car at 25 km/h. Before the collision, the car left 47-m -long skid marks as it braked. The officer …

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What is the slope of a trend line that passes through the points (5, 80) and (7, 65)?
Sedaia [141]

The slope of a trend line that passes through the points (5, 80) and (7, 65) is -7.5.

Step-by-step explanation:

If the line is passing through two points (x1, y1) and (X2, y2). The slope (m) can be calculated using following formula.

m = \frac{y2-y1}{x2-x1}

In this case,

x1  = 5

x2 = 7

y1  = 80

y2 =  65

By putting the values in formula, we get

m = \frac{(65-80)}{7-5}

m = \frac{(-15)}{2}

or

m = -7.5

Therefore, the slope of a trend line that passes through the points (5, 80) and (7, 65) is -7.5.

Learn more:

The following links have more information about slope

brainly.com/question/2586096

brainly.com/question/1978312

Keywords: slope

#learnwithBrainly

3 0
3 years ago
Read 2 more answers
If you set aside $9000 at the end of each year for the next 22 years in a Roth IRA, how much will you have at your retirement 22
madam [21]

Answer:

$501,049.37

Step-by-step explanation:

For computing the amount after 22 years we need to applied the future value which is shown in the attachment below:

Given that

PMT = $9,000

NPER = 22 years  

Annual rate = 0.078

Quarterly= 0.078 ÷ 4 = 0.0195

Effective annual rate = (1.0195^4) - 1 = 0.0803113041

Now applied the formula which is given below

= -FV(RATE;NPER;PMT;PV)

After applying the above formula, the future value is $501,049.37

7 0
3 years ago
Which multiplication and addition problem can help you check your work for 5 ÷ 4 * 1 point 2 x 1 = 2, 2 + 3 = 5 4 x 1 = 4, 4 + 1
denpristay [2]

Answer:don't know

Step-by-step explanation:

4 0
3 years ago
The distance between 2 points is found by ________ the x terms and squaring the result, _________ the y terms and squaring the r
Elina [12.6K]
Answer: Choice A) subtracting; subtracting

The goal is to find the legs of the right triangle, so you can find the hypotenuse. The hypotenuse is the distance between the two points. See the attached image. 

7 0
3 years ago
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And angle measures 54° more than the measure of its complementary angle what is the measure of each angle
Mashutka [201]
Answer:
The measure of the angles are 72 degrees and 18 degrees
Step-by-step explanation:
we know that
If two angles are complementary, then their sum is equal to 90 degrees
Let
x -----> the measure of an angle
y-----> the measure of he other angle
we know that
x+y=90 -----> y=90-x -----> equation A
x=y+54 ----> equation B
substitute equation B in equation A and solve for y
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y=18°
Find the value of x
x=y+54 -----> x=18+54=72°
therefore
The measure of the angles are 72 degrees and 18 degrees
4 0
3 years ago
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