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nevsk [136]
3 years ago
7

Plz answer question in screen shot

Mathematics
1 answer:
lisov135 [29]3 years ago
6 0

Answer:

200√3

Step-by-step explanation:

The triangle given here is a special right triangle, one with angles measuring 30-60-90 degrees. The rule for triangles like these are that the side opposite the 30° angle can be considered x, and the side opposite the 60° angle is x√3, while the hypotenuse, or side opposite the right angle, is 2x. All we need to know here are the two legs to find the area.

Since b is opposite the 30° angle, it is x, while side RS is opposite the 60° angle, meaning it is equal to x√3, meaning that the area of the triangle is 1/2*x*x√3. We can substitute in 20 for x, making our area 1/2*20*20√3. Multiplying we get 10*20√3, or 200√3.

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Pythagorean Theorem in Cones. Please help
Lady_Fox [76]
3^2 + height^2 = 9^2

9 + height^2 = 81
height ^2 = 72

height = sqrt(72)

5 0
3 years ago
The following proof has an error. Find the error and choose the correct replacement.
Dvinal [7]

Answer:

opposite sides of a parallel are congruent.

Step-by-step explanation:

the symbol between AB and DC stands for "equal to", not parallel. boom roasted. (don't hate me if I'm wrong)

8 0
3 years ago
Five years ago Janeta age was one_fifth of her mother'sage .Now she is one_third of her mother's age.Find their present ages?
PilotLPTM [1.2K]

Answer:

J - Janeta's age  M - mother's age

A) (J-5) = .2 * (M-5)

B) J = (1/3) * M

Subtracting 5 from both sides of B:

B) J -5 = (1/3)M -5

then we substitute the right side of this into the left side of A and we get

(1/3)M -5 = .2 M -1

.333333333333M -5 = .2M -1

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Step-by-step explanation:

5 0
3 years ago
Please answer the question
Liono4ka [1.6K]

Answer: 21

Step-by-step explanation:

3 0
2 years ago
Bryce randomly chooses a card from a standard deck of 52 containing 13 of each suit. He records the suit of each card in the tal
Nikolay [14]

Answer:

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1/4 - 3/16 = 1/16

The answer is A.

Step-by-step explanation:

The right answer is A - The theoretical probability of choosing a heart is StartFraction 1 over 16 EndFraction greater than the experimental probability of choosing a heart

3 0
3 years ago
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