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Juliette [100K]
3 years ago
9

If DE = 5x, EF = x + 8, and DF = 20, what is EF? Simplify your answer and write it as a proper fraction, mixed number, or intege

r. Please if you could(or not) type the answer step by step.

Mathematics
1 answer:
Korolek [52]3 years ago
8 0

Answer:

EF = 10

Step-by-step explanation:

DE + EF = DF

5x + x + 8 = 20

6x = 20 - 8

6x = 12

x = 12/6

x = 2

EF = x + 8 = 2 + 8 = 10

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Untitled Question
navik [9.2K]

Answer:

B

Step-by-step explanation:

I copied some smart kid

6 0
3 years ago
20 different comic books will be distributed to five kids. (a) How many ways are there to distribute the comic books if there ar
sveta [45]

Answer:

a) 21684

b) 15504

Step-by-step explanation:

a) Distribute the comic books as follows

only to 1 kid          one way   but we have five kids then  5

to two kids                         C₂₀,₂  =  20! /2! ( 20-2)!    =  20*19 /2  =   190

To three   C₂₀,₃   =  20! /3! ( 20 - 3)!       =  20*19*18 /6               =  1140

To four     C₂₀,₄    =   20 ! / 4! ( 20 - 4 )!   = 20*19*18*17 /4*3*2   =  4845

To five     C₂₀,₅    =    20!  /5! (20 - 5 )!    = 20*19*18*17*16/5*4*3*2*1

C₂₀,₅    =  15504

Then total ways of distribution are:

5 + 190 + 1140 + 4845 + 15504   =  21684

b)   C₂₀,₅  we know from a    that is equal to  15504

7 0
3 years ago
Tell whether the ordered pair is a solution to the equation.<br> x=9;(9,6)
Leni [432]

Answer:

  yes, it is

Step-by-step explanation:

The value of x in the ordered pair (x, y) = (9, 6) is 9. That satisfies the equation ...

  x = 9

Substituting 9 for x, we get a true statement:

  9 = 9

7 0
3 years ago
Read 2 more answers
What is the answer please help
Ne4ueva [31]
180 degrees - 46 degrees
= 34 degrees
8 0
3 years ago
Given that -5 &lt; -3, which statement is not true?
Montano1993 [528]

Answer:

- 3 is less than - 5 is not true

Step-by-step explanation:

Numbers to the right of numbers on the number line are greater.

Numbers to the left of numbers on the number line are less

- 3 is to the right of -5 on the number line and is greater than - 5

3 0
3 years ago
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