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Alik [6]
3 years ago
9

Aaron is standing at point C, watching his friends on a Ferris wheel. He knows that he is looking up at a 57° angle and the meas

ure of arc BD is 80°. What is the measure of arc AED?
Mathematics
2 answers:
Afina-wow [57]3 years ago
7 0

Answer: the answer is 194

Step-by-step explanation:

grandymaker [24]3 years ago
5 0

Answer:

194

Thanks????

Step-by-step explanation:

57  =  1/2(x-80)

114  =     x-80

+180=   +180

X= 194

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Determine whether the following is an example of a sampling error or a non-sampling error. 12% of all people are left handed. A
const2013 [10]

Answer:

Sampling Error

Step-by-step explanation:

When the researcher randomly selected 200 people, he is creating an sample or subset from the population, that would be all the people in the earth. The error obtained was product of the fact that the analysis he made was estimated from the sample and not the whole population. There is no other mentioned factor that could cause an error, so the answer would be a sampling Error.

7 0
3 years ago
What is the distance between each pair of numbers?
Hunter-Best [27]

One is a, and the other is just A.

Please give brainliest. Thanks!

5 0
2 years ago
Solve the following equation by factoring 2x^2-5x-12=0
Korolek [52]
Answer: x = 4 and x = -3/2

Procedure:

1) Given: 2x^2 - 5x - 12 = 0

2) Multiply both sides by : 2(2x^2) - 2(5x) - 2(12) = 0

3) Rearrange: (2x)^2 -5(2x) - 24 = 0

4) Notice that the common factor is (2x)

5) Set the parenthesis with the common factor inside:

(2x     ) (2x     ) =0

6) The first sign is the same sign of the second term of the trinomial, which is negative, the second sign is the product of the signs of the second and the third terms of the polynomial, which is (-)*(-) = + (positive)

(2x - )(2x + ) = 0

7) find two numbers that sum up - 5x and its product is -24.

- 8 + 3 = - 5
(-8)(+3) = -24

=> the numbers in the factors are -8 and +3

(2x - 8) (2x + 3) = 0

That is the factored equation. Now you can solve

8) a) 2x - 8 = 0 => 2x = 8 => x = 8/2 => x = 4

b) 2x + 3 = 0 => 2x = - 3 => x = - 3/2

Answer: the two solutions are x = 4 and x = -3/2
8 0
3 years ago
Raj weighs a book and rounds the weights to the nearest tenth. Does this weight round to 1.5 pounds?
Lelu [443]

Answer:

True

Step-by-step explanation:

1.45 the 5 is equal/above it so it is true

7 0
2 years ago
Read 2 more answers
Solve the system using elimination 6x-3y=15 and 7x+4y=10
Oxana [17]
6x - 3y = 15.....multiply by 4
7x + 4y = 10....multiply by 3
---------------
24x - 12y = 60 (result of multiplying by 4)
21x + 12y = 30 (result of multiplying by 3)
---------------add
45x = 90
x = 90/45
x = 2

6x - 3y = 15
6(2) - 3y = 15
12 - 3y = 15
-3y = 15 - 12
-3y = 3
y = -3/3
y = -1

solution is (2,-1) <==
8 0
3 years ago
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