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Anvisha [2.4K]
3 years ago
15

15

Mathematics
1 answer:
-BARSIC- [3]3 years ago
5 0
Then its not a polygon
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A math class has 7 girls and 3 boys in the seventh grade and 3 girls and 9 boys in the eighth grade. The teacher randomly select
Bumek [7]

7th grade has 3 boy out of 10 students

 probability of picking a boy is 3/10

8th grade has 9 boys out of 12 students are boys

 probability of picking a boy is 9/12 reduced to 3/4

3/10 x 3/4 = 9/40 probability of picking 2 boys

4 0
3 years ago
I could really use your help​
nydimaria [60]

Answer:

x = \frac{c-a}{5y}

Step-by-step explanation:

Given

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5xy = c - a ( isolate x by dividing both sides by 5y )

x = \frac{c-a}{5y}

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3 years ago
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mars1129 [50]

Answer:

Step-by-step explanation:

(3-\sqrt{2)(3+\sqrt{2)

=(3)^2-(\sqrt{2 )^2

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3 0
2 years ago
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Likurg_2 [28]

Answer:

1600 × 1 = 1600

Step-by-step explanation:

4 0
2 years ago
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A subtending arc on a circle with a radius of 4.5 centimeters has an arc length of 8π. The measure of the angle subtended by the
yarga [219]

Answer:

  320°

Step-by-step explanation:

<u>Part 1</u>

The arc length is given by ...

  s = rθ . . . . . r is the radius, θ is the central angle in radians

We want to find θ, so we can fill in the given values and divide by the coefficient of θ.

  8π = 4.5θ

  θ = 8π/4.5 = 16π/9 . . . radians

Since π radians = 180°, the degree measure of the angle is ...

  θ = (16/9)180° = 320°

The measure of the angle subtended by the arc is 320°.

_____

<u>Part 2</u>

We might be able to help with the second part of the question, but you need to edit to put in the numbers and answer choices.

3 0
3 years ago
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