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Black_prince [1.1K]
3 years ago
9

Need math help please!!

Mathematics
1 answer:
Eva8 [605]3 years ago
8 0

Answer:

  8

Step-by-step explanation:

The fact that DE is perpendicular to AC means triangles AED and CED are congruent and side AD is equal in length to side CD.

  5x -20 = 2x +4

  3x = 24 . . . . . . . add 20-2x

  x = 8 . . . . . . . . . .divide by 3

The value of x is 8.

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HELP PLEASE!
Simora [160]

Answer:

n m n .m .nmn nm Step-by-step explanation:

3 0
3 years ago
PLEASE HELP DUE NOW!!!<br> WILL MARK BRAINLIEST!!!
Sav [38]

Answer:

(-5, -8)

Step-by-step explanation:

- 9x + 5y = 5 \\  - 5x + 5y =  - 15

- 9x + 5y = 5 \\ 5x - 5y = 15

- 4x = 20

- x = 5

x =  - 5

-5( - 5) + 5y =  - 15

25 + 5y =  - 15

5y = -40

y = -8

3 0
3 years ago
Read 2 more answers
Which is greater... -8 , -18, 3, -19??
andrew-mc [135]
It is 3 I hope this helps you
7 0
3 years ago
Read 2 more answers
Miguel is playing a game in which a box contains four chips with numbers written on them. Two of the chips have the number 1, on
Iteru [2.4K]

Answer:

P(X_i=2) =\dfrac{1}{6}

P(X_i=-1) =\dfrac{5}{6}

Step-by-step explanation:

Given the numbers on the chips = 1, 1, 3 and 5

Miguel chooses two chips.

Condition of winning: Both the chips are same i.e. 1 and 1 are chosen.

Miguel gets $2 on winning and loses $1 on getting different numbers.

To find:

Probability of winning $2 and losing $1 respectively.

Solution:

Here, we are given 4 numbers 1, 1, 3 and 5 out of which 2 numbers are to be chosen.

This is a simple selection problem.

The total number of ways of selecting r numbers from n is given as:

_nC_r = \frac{n!}{r!(n-r)!}

Here, n = 4 and r = 2.

So, total number of ways = _4C_2  = \frac{4!}{2!\times 2!} = 6

Total number of favorable cases in winning = choosing two 1's from two 1's i.e. _2C_2 = \frac{2!}{2! 0! } = 1

Now, let us have a look at the formula of probability of an event E:

P(E) = \dfrac{\text{Number of favorable ways}}{\text{Total number of ways}}

So, the probability of winning.

P(X_i=2) =\dfrac{1}{6}

Total number of favorable cases for -1: (6-1) = 5

So, probability of getting -1:

P(X_i=-1) =\dfrac{5}{6}

Please refer to the attached image for answer table.

7 0
3 years ago
Can someone pls help me? :)
erastova [34]

Step-by-step explanation:

1 t=16/21

2.m=2

3.n=13/7

4.a=2

5.x=6/17

6.x=15

7.s=21/4

8. t=7/3

9. s=1

10. s=6/61

11. x=1/3

12. r=27/16

13. c=−1

14.m=9/5n

15. j=−117/58

8 0
3 years ago
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