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
eduard
3 years ago
14

At the doctor's office, there is a scale that measures people's weight. The needle is 20 cm long, and it rotated 100° when Frank

stepped on it. How far did the needle travel as it rotated?
Mathematics
2 answers:
Lana71 [14]3 years ago
7 0

Answer: 100(pi)/9

Step-by-step explanation:

We use the equation (theta/360)(2)(pi)(r)

Theta = 100 (100 degrees of a 360 degree circle)

r = 10 (not 20 because that is the whole needle, we need half of 20 for the radius)

Plugging this in: 100/360 (2)(pi)(10)

2,000(pi)/360

Divide by 20 to simplify:\frac{100\pi}{9}

Mashutka [201]3 years ago
4 0
Given:
length of the needle: 20 cm
angle 100°

We need to solve for the length of an arc to get the distance the needle has traveled.

Length of an Arc = n°/360° * 2πr
Length of an Arc = 100°/360° * 2 * 3.14 * 20cm
Length of an Arc = 0.28 * 125.6 cm
Length of an Arc = 35.17 cm
You might be interested in
There are three exams in your linear algebra class, and you theorize that your score in each exam (out of 100) will be numerical
Romashka [77]

Answer:

a) 40 hours

b) 60 hours

C) 100 hours

Step-by-step explanation:

0.2a + 0.3b+0.5c = 76

Hence: 0.2* (0.2 λ) +0.3*(0.3 λ )+0.5*(0.5 λ ) = 76

0.38 λ =76

λ = 76/0.38 =200

Thus : 40, 60, 100

7 0
3 years ago
Pls help me pls I’ll give brainliest for right answer!
Serga [27]

Answer: 122 ft and 12.77 m

Step-by-step explanation:

First question answer = 100/cos35 = 122.07 = 122 ft

Second question answer = 12/sin70 = 12.77 m

5 0
2 years ago
HELP ASAP 20 BRAINLY POINT PLUS USER HELPPP ​
Ratling [72]

Answer:

A

Step-by-step explanation:

(m / 3) = (12 / 3) = 4

1/2 x 4 = 2

2 + n = 2 + 3/5 = 2 and 3/5 = 13/5

6 0
2 years ago
Read 2 more answers
A bucket contains one green block, one red block, and two yellow blocks. You choose one block from the bucket. Find the theoreti
Natali [406]

Answer:

A)1/4, 1/2 ,1/4

B)1

C)3/4

D)1

Step-by-step explanation:

THESE IS THE COMPLETE QUESTION:

A bucket contains one green block, one red block, and two yellow blocks. You choose one block from the bucket.

A)Find the theoretical probability that you will choose each color.

B)Find the sum of probability in(a)

C)What is the probability that you will not choose a red block?

D)Find the sum of the probabilities of choosing a red block and probability of not choosing a red block

EXPLANATIONS:

Sample of blocks: green,red, yellow, yellow

Total sample =4

Green sample = 1

Red sample 1

Yellow sample = 2

A)To find the theoretical probability that you will choose green.

i) P( choosing a green block)= green sample/Total sample

=1/4

To find the theoretical probability that you will choose red

ii)P(choosing a red block) = Red sample block/Total sample of blocks

= 1/2

To find the theoretical probability that you will choose yellow

iii) P(choosing a yellow block) = 1/4

B)The sum of probability in( a)

=P( choosing a green block) + P( choosing a Red block) +P( choosing a yellow block)

= 1/4 + 1/2 + 1/4

=1

C)P( Not choosing a red block) = 1 - 1/4

= 3/4

D)P(Sum of choosing a red block and not choosing a a red block)

=1/4 + 3/4

= 1

7 0
3 years ago
Solve for y: 10.3 = 0.6y
Mademuasel [1]
Y is being multiplied by 0.6 so you have to divide by 0.6 on both sides to leave y alone.
y=10.3/0.6
7 0
3 years ago
Read 2 more answers
Other questions:
  • Help........ this is hard just explain what to do
    12·1 answer
  • The area of a triangular block is 64 square inches. If the base of the triangle is twice the height, how long are the base and h
    10·2 answers
  • The variables x and y vary directly. if one pair of the values is x = 3 and y = 12, write an equation that shows the relationshi
    5·2 answers
  • In the experimental method, the researcher manipulates one variable by changing its value from one level to another, then measur
    5·1 answer
  • The average height of students in Ms. Stevenson's 8th grade class is 58 inches. The graph below shows the actual heights in inch
    5·2 answers
  • What value of x is in the solution set of -2(3x + 2) > -8x + 6?
    15·2 answers
  • 4. In ABC, AB = 8,BC = 10, and AC = 7
    8·1 answer
  • 8. Jerry Stevens wants to know how long it will take $1,100 to amount to $1,750 at a simple interest rate of 8 1/2%. Could you h
    11·1 answer
  • After 4 years, $3,006 deposited in a savings account with simple interest had grown to a total of $3,967.92. What was the intere
    15·1 answer
  • Using factoring, what is the solution to the equation 2x2 + 3x – 5 = 0
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!