1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nordsb [41]
2 years ago
7

If a car goes around a turn too quickly, it can leave tracks that form an arc of a circle. By finding the radius of the circle,

accident investigators can estimate the speed of the car. To find the radius, accident investigators choose points A and B on the tire marks. Then, the investigators find the midpoint C of AB¯¯¯¯¯¯¯¯. Use the diagram to find the radius r of the circle. Round your answer to the nearest tenth.
Mathematics
1 answer:
Slav-nsk [51]2 years ago
6 0

Answer:

155.7

Step-by-step explanation:

Use what you know.

Segment AC is 130 ft

Segment CD is 70ft

If you use the Pythagorean Theorem, in this case being  =  +

To find segment CE, you would do r-70

So,  =  +

= 16,900 +  -140r + 4900

Add the -140r to the left side and then get rid of the two . Then Add 16,900 and 4900 together

You'll end up with 140r = 21,800

Divide 140 on each side.

Your final answer will be 155.7 (rounded to the nearest tenth)

You might be interested in
9. The figure shows a rectangle with its length and
lora16 [44]

Answer:

875cm^2

Step-by-step explanation:

since opposite sides are equal

3x-y=2x+y

x=2y                                                      

y=x/2                                                                      ....(i)

thus new length=2x+y

=2x+(x/2)                                                              [using (i)]

=(4x+x)/2

l=5x/2                                                                   .....(ii)

now,

perimeter=2(l+b)=120cm

l+b=60cm            

from figure and using (ii)

[5x/2]+2x-3=60

[5x+4x-6]/2=60

9x-6=120

9x=126

x=126/9

x=14                                                                 ..........(iii)

substitute (iii) in (i)

y=14/2

y=7                                                                  ...........(iv)

From figure,

length=2x+y                                                   [using (iii) and (iv)]

=2x14+7

length=35cm

breadth=2x-3

=2x14-3                                                          ....[using(iii)]

=28-3

breadth=25cm

now,

Area=lxb

=35x25

=875cm^2

7 0
3 years ago
Write an equation that represents the line.<br> Use exact numbers
Alekssandra [29.7K]
Y=2/3x+2/3 bc slope is 2/3 and 4-2/4-1=2/3
7 0
2 years ago
Mrs. Low has 12 bags, each containing 25 sweets. She divides the sweets among 30 boys equally. How many sweets does each boy get
irakobra [83]
Each boy gets 10 sweets.

12×25=300÷30=10//
6 0
3 years ago
(3.03 MC)
liberstina [14]

Answer:

Step-by-step explanation:

the following equation to show the height of the plant f(n), in cm, after n days:

f(n) = 8(1.05)^n

Part A: When the scientist concluded his study, the height of the plant was approximately 11.26 cm. What is a reasonable domain to l

5 0
2 years ago
Read 2 more answers
6 − x = −12<br> please answer
lorasvet [3.4K]

Answer:

x=18

Step-by-step explanation:

6-x=-12

Subtracting 6 from both sides

-x=-12-6

-x= -18

Dividing both sides by -1

x=18

6 0
3 years ago
Read 2 more answers
Other questions:
  • Y’all please help!!!!!!!!
    6·1 answer
  • Kara is using a collection of old buttons for a craft project.She sorts the buttons by their sizes.The line plot shows the resul
    5·2 answers
  • Sean's house is currently worth $188,900. According to a realtor, house prices in Sean's neighborhood will increase by 4.8% ever
    5·2 answers
  • If 20 is 40% of a value, what is that value?
    14·2 answers
  • PLEASE HELP MEEE
    7·1 answer
  • According to the graph shown, what is the lowest score someone earned on the math test?
    6·1 answer
  • What is the measure of
    11·1 answer
  • Answer plz it a maath question
    14·2 answers
  • What is the percent of decrease from 40 to 24?
    13·2 answers
  • Olamami performancematters.com/ola/lapichentCodes Miamidade
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!