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Nataly_w [17]
4 years ago
10

Angle BCD is a circumscribed angle of circle A. Angle BCA measures 40°.

Mathematics
2 answers:
TEA [102]4 years ago
8 0

Answer:

100°

Step-by-step explanation:

I just took the test

Fynjy0 [20]4 years ago
3 0

Answer:

D. 100

Step-by-step explanation:

correct on edu2020

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-4x change subtraction to addition and turn 9x to -9x and then add and get -13x
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Find the perimeter. Simplify your answer.
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we have: P=(7c-5) +(10c-2) + (7c-5) = 7c-5+10c-2 + 7c-5=24c-12

ok done. Thank to me :>

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2 years ago
A 34-ft. ladder resting against the wall of a building forms a right triangle with the wall and ground. The bottom of the ladder
BigorU [14]

The ladder resting against the house forms a triangle similar to the one in the image below

To answer this question you must use Pythagorean theorem

a^{2} +b^{2}=c^{2}

a and b are the legs (the sides that form a perpendicular/right angle)

c is the hypotenuse (the side opposite the right angle)

In this case...

a = x

b = 8

c =  34

^^^Plug these numbers into the theorem

x^{2} +8^{2} =34^{2}

solve for x

x^{2} + 64 = 1156

Subtract 64 to both sides

x^{2} = 1092

Take the square root of both sides

x = √1092

This can be simplified to:

2√273

or

x ≈ 33.045...

The ladder reached roughly 33.05 ft up the wall of the building

Hope this helped!

~Just a girl in love with Shawn Mendes

8 0
4 years ago
Number 2: (look at pivture) 10 point
PolarNik [594]

Answer:

A

Step-by-step explanation:

Because the arrow is going 2 in the right direction...so you have to have the 2 in the equation...

and the reason it equals 5 instead of a (-) number is because of the KCC rule

so basically the equation is 2+3

or if you don't want the long way just look at all of the equations...only one of the have a 2 in it so it is automatically the correct answer

3 0
3 years ago
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Tamara finds the sum of two number cubes rolled at the same time. The chart below shows all possible sums from the 36 possible c
yarga [219]

Answer:

Tamara should expect the sum of the two cubes to be equal to 5 20 times.

Step-by-step explanation:

The sample space of rolling a number cube are:

S = {1, 2, 3, 4, 5, 6}

If two such cubes are rolled together, then the sum of the two cubes will be 5 for the combinations below:

S₁ = {(1, 4), (2, 3), (3, 2) and (4, 1)}

The total number of outcomes will be, N = 36.

Compute the probability that the sum of rolling two numbered cubes as follows:

Let X = number of time the sum of the two numbers on two cubes is 5.

Two numbered cubes are rolled n = 180 times.

The event of getting a sum of 5 in independent of the other results.

The random variable X follows a Binomial distribution with parameters n = 180 and p = .

The expected value of X is:

Compute the expected number of times Tamara expects the sum of the two cubes to be equal to 5 as follow:

Thus, Tamara should expect the sum of the two cubes to be equal to 5 20 times.

6 0
2 years ago
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