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
mestny [16]
3 years ago
11

HELPPPPPPP!!!!!!!!!!!!!

Mathematics
2 answers:
marshall27 [118]3 years ago
8 0
Calculate the area of the entire circle first.

A = 3.15 (r) ^2

A = 3.15 (2.25) ^2


Now calculate the area of the white circle

Take the radius - 1.5 to calculate the radius of the white circle

A = 3.15 (.75)^2

Now subtract your two answers


Sonbull [250]3 years ago
4 0
14.23 is your answer!!!!!!!
You might be interested in
20% of the students in the class play an instrument. if there are 35 students in class, how many play an instrument?
kondor19780726 [428]

Answer:

7 students play an instrument.

Calculation:

35=100%

20%=[20×35]÷100

=7

6 0
2 years ago
Please help thanks!!
Sidana [21]

So for this, you will be doing two different multiplications: 3 x 4 and √8 x √3.

3 x 4 = 12

√8 x √3 = √24

Now our result is 12√24, however, this can be simplified. Using the product rule of radicals (√ab = √a x √b), our simplification is such:

12√24 = 12√(8 x 3) = 12√(4 x 2 x 3) = 2 x 12√(2 x 3) = 24√6

In short, the answer is 24√6, or the first option.

4 0
2 years ago
Are the ratios 6:18 and 2:6 equivalent?
Ksju [112]
Yes because 6/18=1/3 and 2/6=1/3. Then 6/18=2/6
7 0
3 years ago
Read 2 more answers
PLEASE HELP ME WITH THIS
Vedmedyk [2.9K]
Let's start with the drawing. (See the drawing at the bottom of this answer.)

Draw a vertical segment.
At the bottom endpoint, draw a horizontal segment to the right.
The angle at the bottom left is a right angle.
So far this should look like an "L" shape.
The vertical segment is the wall, and the horizontal segment is the ground.

Now draw a segment that connects the right endpoint of the horizontal segment and the top endpoint of the vertical segment. Now you have a right triangle. The diagonal segment represents the ladder. The diagonal segment is the hypotenuse. Label the diagonal segment, the hypotenuse, 12 ft.
Label the vertical segment, the wall, 11.8 ft.

The angle at the bottom right is A. It is the angle the ladder makes with the ground. This angle cannot be greater than 75 degrees.

Now we use trigonometry to find the measure of angle A.

For this right triangle, and its angle A, you have a hypotenuse that measures 12 ft, and an opposite leg that measures 11.8 ft.
We need to find angle A.
The trig ratio that relates the opposite leg and the hypotenuse is the sine.

\sin A = \dfrac{opp}{hyp}

\sin A = \dfrac{11.8}{12}

\sin A = 0.98333

Since the sine of angle A equals 0.98333, we use the inverse sine function to find the measure of angle A.

A = \sin^{-1} 0.98333

A = 79.5^\circ

Answer:
The angle the ladder makes with the ground is 79.5 degrees which is greater than 75 degrees, so the ladder it will be unsafe in this position.


           |\
           |  \
           |    \
           |      \
opp = |         \ hyp = 12
= 11.8  |           \
           |             \
           |_______\  A
3 0
3 years ago
Find the value of x.
Tatiana [17]

\large \mathfrak{Solution : }

The given pair of angles are vertical opposite angle pair so, they are equal. i.e

  • (x + 90)\degree = 4x\degree

  • (4x - x) \degree= 90\degree

  • 3x\degree = 90\degree

  • x\degree =  \dfrac{90\degree}{3\degree}

  • x\degree = 30\degree
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the quotient of 1/6 divided by 2?
    15·1 answer
  • In a fruit cocktail, for every 12 ml of orange juice you need 8 ml of apple juice and 100 ml of coconut milk. What is the ratio
    6·2 answers
  • What’s 5x8-6+5x7 divided by 4
    13·1 answer
  • Solve for y.<br> y+9=7<br><br> Any help
    15·2 answers
  • (06.01 MC)
    6·1 answer
  • This year Linda watched 60 movies. She thought that 36 of them were very good. Of the movies she watched, what percentage did sh
    13·1 answer
  • The circumference of a circle is approximately 131.88 centimeters What is the area of the shaded region (6/10 of a circle)
    6·1 answer
  • Which divisor of -2x? – 2x2 + 2x – 5 results in a remainder of 83?
    5·1 answer
  • Identify the key features of the parabola that is formed by the equation
    11·1 answer
  • MATH Arithmetic QUESTION
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!