Select the correct answer.

Mathematics

1 answer:

USPshnik [31]3 years ago

6 0

Answer:

Step-by-step explanation:

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Someone please help me it's worth 35 points

Zigmanuir [339]

Question 1)
I assume it asks about the circumference (of only the circle arc)
C=r*2*pi
r=2
-> C=4pi

1 Quarter only of the circle: C/4=pi=3.1

if it's the perimeter of the shape then you need to add the two 2in sides

C=3.1+2*2=7.1

2)
C=r*2*pi, but not a full circle, only semi-> divide by 2-> C=r*pi
r=30
C=30pi=94.2

3)
the radius of the semicircle is 6/2=3mm
semicircle C=r*pi=3pi

add the rectangle perimeter
3pi+2*3+6=12+3pi=21.4

4)
C=2r*pi
insert 2r=d=12
C=12pi=37.7

5)
C=2r*pi
r=10
C=20*pi~62.8

3 rotations of the wheel->
distance=C*3=188.4

4 0

3 years ago

What will the movement of a point which is on the surface of a circle touching the ground at the same time, if the circle turns

lesya692 [45]

Answer:

183.26cm

Step-by-step explanation:

Radius of the Circle = 50cm

Let the point be at A

It turns forward 210 degrees to B.

Therefore, the central angle subtended by the arc AB = 210 degrees

The movement of the point from A to B will be the length of the arc AB.

$\text{Length of an arc }=\dfrac{\theta}{360} \times 2\pi r \\$Therefore, the distance moved forward$\\=\dfrac{210}{360} \times 2\times\pi \times 50\\\\=183.26$ cm$

3 0

4 years ago

ASAP PLSSS help me with this math question

rjkz [21]

Answer:

Answer is D

Step-by-step explanation:

just took the test and got it right

Please mark brainlest

8 0

3 years ago

What is the distance between points a(-3,2) and b(-6,-2)

Veronika [31]

<h3>Answer: 5 units</h3>

Work Shown:

$A = (x_1,y_1) = (-3,2) \text{ and } B = (x_2, y_2) = (-6,-2)\\\\d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-3-(-6))^2 + (2-(-2))^2}\\\\d = \sqrt{(-3+6)^2 + (2+2)^2}\\\\d = \sqrt{(3)^2 + (4)^2}\\\\d = \sqrt{9 + 16}\\\\d = \sqrt{25}\\\\d = 5\\\\$

I used the distance formula. Alternatively, you can plot the two points and form a right triangle. Then use the pythagorean theorem. The distance formula is effectively a modified version of the pythagorean theorem.

7 0

2 years ago

Carrie borrowed $720 from a friend to pay for a car repair. Carrie promises to repay her friend in 8 equal

shutvik [7]

The graph represents a linear function.

The amount left to pay after the eight month is (d) (8,y)

From the question, we have:

$\mathbf{Loan\ Amount =\$720}$