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defon
3 years ago
14

I don't know this 17/21 - 2/10

Mathematics
2 answers:
Naily [24]3 years ago
5 0

Answer:64/105

Step-by-step explanation:

Find the lcm of 21 and 10.

170/210 - 42/210

128/210

64/105

Maksim231197 [3]3 years ago
3 0

Answer:

64/105

Step-by-step explanation:

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The shaded sector above covers 1/3 of the circle. If the radius of the circle above is 3 cm, what is the area of the sector in t
Mekhanik [1.2K]

Given:

The shaded sector above covers \dfrac{1}{3} of the circle.

Radius of the circle = 3 cm

To find:

The area of the sector in terms of π.

Solution:

The area of a circle is

A=\pi r^2

Substituting r=3, we get

A=\pi (3)^2

A=9\pi

It is given that the shaded sector above covers \dfrac{1}{3} of the circle.

The area of shaded sector =\dfrac{1}{3}A

                                             =\dfrac{1}{3}(9\pi)

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Therefore, the area of shaded sector is 3π sq. cm.

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3 years ago
7. Write the equation of a line which passes through the points (-3,5) and (6,23)
faust18 [17]

Answer:

answer to the equation is

y = 2x + 11

Step-by-step explanation:

y = mx + b

first find the slope of the line using the two points

slope \: m =  \frac{y2 - y1}{x2 - x1}  =  \frac{23 - 5}{6 - ( - 3)}   \\ =  \frac{18}{9}  \\ slope \: m = 2

substitute 2 for m and use one of the points for x and y and solve for b

5 = 2( - 3) + b \\ 5 =  - 6 + b \\ 5 + 6 = b \\ b = 11

Now that you found b, the y-intercept, you can substitute that into the equation for your line

y = 2x + 11

7 0
2 years ago
Find the indicated angle measures. Then justify the answer. ​
ExtremeBDS [4]
Pretty sure it’s 65 since its alternate interior angles which equal 180
8 0
2 years ago
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Alexeev081 [22]

Answer:

In order to simplify a fraction there must be:

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Step-by-step explanation:

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3 years ago
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Answer:

is i dnt know As I am in 7 class

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3 years ago
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