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GalinKa [24]
3 years ago
10

If angle∠ A and angle∠ B are supplementary angles and angle∠ A is eighteight times as large as angle∠ ​B, find the measures of a

ngle∠ A and angle∠ B.
Mathematics
1 answer:
Shalnov [3]3 years ago
4 0
A = 8B
A + B = 180
8B + B = 180
9B = 180
B = 20
A = 8 * 20 = 160
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You decide to play roulette 4 times, each time betting on red. What is the distribution of X, the number of times you win?
aalyn [17]
  <span> 1.
If betting on red, 18/38 = 9/19 chance of winning, so 10/19 chance of losing
Chance of winning 4 times: (9/19)^4 = 6561/130321 =~ 5.034%
Chance of winning 3 times: (9/19)^3 * (10/19) * C(4,1) = 29160/130321 =~ 22.3755%
Chance of winning 2 times: (9/19)^2 * (10/19)^2 * C(4,2) = 48600/130321 =~ 37.2925%
Chance of winning 1 time: (9/19) * (10/19)^3 * C(4,3) = 36000/130321 =~ 27.624%
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3 0
2 years ago
To find the product of a 3-digit number and a 1-digit number,
Misha Larkins [42]

Answer:

each number is the answer

Step-by-step explanation:

5 0
3 years ago
Help please <br><br>numbers 46, 47, 48
pentagon [3]

Answer:

46. ΔQRP ≅ ΔUTV

47. y = 42

48. ∠KMN = 101°

Step-by-step explanation:

46. It is convenient to name the vertices in the order of the number of arc identifying the angle. Corresponding vertices need to be named in the same order in the congruence statement.

47. From the sum of angles of a triangle, you know that ...

  x +62 +65 = 180

  x = 180 -127 = 53

  x - y = 11 since the corresponding sides are the same length

  53 - y = 11 . . . . . .substitute the value of x

  y = 53 - 11 . . . . . . add y-11

  y = 42

48. The exterior angle has the same measure as the sum of the opposite interior angles:

  81 +4x = 13x +36

  45 = 9x . . . . . . . . . add -4x-36

  5 = x . . . . . . . . . . . divide by 9

  ∠KMN = (13x +36)° = (13·5 +36)° = 101°

8 0
3 years ago
The length of a rectangle is (x plus 3) inches long, and the width is 3 2/5 inches. If the area is 15 3/10 square inches, write
IgorC [24]

Answer: Explained in the step-by-step


Step-by-step explanation:

We want to isolate x, and remember, what we do to one side we do to the other:

(x+3) * 3  2/5 = 15  3/10

(x+3) * 3  2/5 divided by 3  2/5 = 15  3/10  divided by 3  2/5

x + 3 = 153/10 * 5/17

x + 3 = 765/170

x + 3 = 153/34

x + 3 = 4.5

x + 3 - 3 = 4.5 - 3

x = 1.5

Check:

(1.5+3) * 3  2/5 = 15  3/10

4.5 * 3  2/5 = 15  3/10

(3  2/5 = 3.4 and 15  3/10 = 15.3)

4.5 * 3.4 = 15.3

15.3 = 15.3

6 0
3 years ago
Sara works 40 hours per week and earns $660. Which graph shows the unit rate for this situation? A) A B) B C) C D) D
Sholpan [36]
For the answer to this question, let us assume based on the 40 hours per week that she's working 8 hours a day and 5 days a week.
first, you must divide 660 by 40 hours to see how much she earns per day.
660/40

now we know that she earns $16.5 per day. 
I hope my answer helped you.
8 0
3 years ago
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