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3 years ago

A.line symmetry

Mathematics

2 answers:

marta [7]3 years ago

6 0

Answer:

ixdhb

Step-by-step explanation:

fdf

padilas [110]3 years ago

3 0

A line segment can have both line symmetry and rotational symmetry.
Answer: C )

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In △ABC, AB = 13, AC = 20, BC = 21. Find the length of the altitude AD

nika2105 [10]

The length of the altitude AD is 12 units.

<h3>How to find the height of a triangle?</h3>

The height of the triangle can be found as follows:

We have to find an angle using cosine law before we can find the height.

Therefore,

20² = 13² + 21² - 2 × 21 × 13 cos B

400 = 169 + 441 - 546 cos B

400 - 610 = - 546 cos B

-210 = - 546 cos B

cos B = -210 / -546

cos B = 0.38461538461

B = cos⁻¹ 0.38461538461

B = 67.3810899783

B = 67.38°

Hence,

sin 67.38° = opposite / hypotenuse

sin 67.38° = AD / 13

cross multiply

AD = 13 sin 67.38°

AD = 11.9999882145

AD = 12 units

learn more on triangle here: brainly.com/question/13387814

#SPJ1

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2 years ago

Simplify the below question.<br><br> Please send the answer with correct explanation.

melisa1 [442]

Answer:

48t^4

Step-by-step explanation:

First you simplify and cross out all the uneeded characters because this is a division equation

Then whatever is left you calculate it

8 0

3 years ago

Read 2 more answers

Ann, ben and Cheryl share some money in the ratio 3:7:10

labwork [276]

Answer:

Step-by-step explanation:

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4 years ago

12 yellow balls and 9 red balls are placed in an urn. Two balls are then drawn in succession without replacement. What is the pr

denis23 [38]

Answer:

$\frac{9}{35}$

Step-by-step explanation:

When the first draw is done there are 9 red balls in a sample size of 21. So there probability of drawing a red ball will be $\frac{9}{21}$

When the second draw is done, there will be 12 yellow balls in a sample size of 20 since the first ball will not have been replaced into the bag. So the chance of someone drawing the second ball in the second draw is $\frac{12}{20}$

The probability of them happening in this order is the product of both probabilities:

$\frac{9}{21} * \frac{12}{20} = \frac{9}{35}$

8 0

3 years ago

Solve the expression

babunello [35]

Answer:

1.49011612e18

Step-by-step explanation:

5^20=9.53674316e13

5^6=15625

9.53674316e13*15625=1.49011612e18

5 0

3 years ago