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Nikolay [14]
3 years ago
11

Calculate the angle of a sector of 50° and a radius of 4cm

Mathematics
1 answer:
Anastasy [175]3 years ago
7 0

Answer: 20π/9 cm²

Step-by-step explanation:

Central angle is given as = 50°

We should note that for a complete circle to be made, it needs 360∘. Therefore, this is 50/360 = 5/36 of the area of a sector.

Area of the sector = 5/36 × πr².

= 5/16 × π × 4²

= 5/36 × π × 16

= 80π/36

= 20π/9 cm²

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URGENT GEOMETRY REFLECTIONS !! INCLUDE EXPLANATION PLEASE
netineya [11]

Hello!

First of all, we need to reflect our point across the line y=3. This is a horizontal line. Therefore, our y-value will change. If we reflect, we get the point (0,3).

Now we reflect across the x-axis, which is also a vertical line. When reflecting across an axis, you just switch to the inverse of a number. This gives us (0,-3).

Therefore, our answer is (0, -3).

I hope this helps!

6 0
3 years ago
-3y^10-5y^14: Write in standard form, find the degree, and classify the number of terms
alisha [4.7K]

Answer:

STANDARD: -5y^14 -3y^10

DEGREE: 14

NUMBER OF TERMS: 2

Step-by-step explanation:

Two terms, the highest degree is 14, and standard has the term with the highest degree in the front.

7 0
3 years ago
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Andre45 [30]
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5 0
3 years ago
What is the value of the expression (3a-b)/(6(b+a)) when a = 4 and b = -2? Show your work to support your answer.
olga nikolaevna [1]

Answer:

1\frac{1}{6} or 1.166 Repeating

Step-by-step explanation:

This is a very simple equation!

First you write it out

\frac{3a-b}{6(b+a)}

Now you plug in your values.

a = 4

b= -2

So.

\frac{3(4) - (-2)}{6(-2+4)}

Now, follow PEMDAS

3 (4) = 12

12 - (-2) is the same as 12+2 Which equals 14

Now you have...

\frac{14}{6(-2+4)}

-2 + 4 = 2

6 (2) = 12

Final Fraction is

\frac{14}{12}

Which can be reduced to

\frac{7}{6}

or

1.166 (repeating)

Hope this helps!

6 0
3 years ago
A test is worth 100 points containing 38 problems. Each problem is either 2 points or 5 points. How many of each amount of point
RSB [31]

Answer:

So there are 8 five-point problems and 30 two-point problems

5 0
3 years ago
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