1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Artist 52 [7]
3 years ago
14

I need help with this

Mathematics
2 answers:
PtichkaEL [24]3 years ago
8 0

Answer:

58

Step-by-step explanation:

DE + EF = DF

47+ 3x+10 = 9x-39

Combine like terms

57 +3x = 9x-39

Subtract 3x from each side

57+3x-3x = 9x-3x-39

57 = 6x-39

Add 39 to each side

57+39 = 6x-39+39

96 = 6x

Divide by 6

96/6 = 6x/6

16 =x

We want the length of EF

EF = 3x+10

     = 3*16 +10

    = 48+10

   = 58

Mademuasel [1]3 years ago
6 0

Answer:

x = 16

Step-by-step explanation:

Step 1: We know DF - DE = EF

9x - 39 - 47 = EF

Step 2: Simplify

9x - 86 = EF

Step 3: Set the equation equal to 3x + 10

9x - 86 = 3x + 10

6x = 96

x = 16

Therefore x is equal to 16

You might be interested in
What is the length of BC ?
MrRa [10]
Looking at this triangle, we can see that is a form of a 45, 45, 90 triangle
This would mean that 2x-24=x-2
Solve: 2x-24=x-2
subtract x from both sides and add 24 to both sides...
x=22
6 0
4 years ago
Annie is adding the expression 4 + 5 + (–4) and follows the procedure of starting at 4, moving right 5 units, and then moving le
jekas [21]

Answer:

Step-by-step explanation:

hello

4 0
3 years ago
EASY QUESTION<br> Is the unknown side a leg or hypotenuse?
Artemon [7]

Answer:

the unknown side is hypotenuse.

7 0
3 years ago
Read 2 more answers
Find the inverse function. f(x)=-3x+3
AveGali [126]

Answer:

i think its 1.

Step-by-step explanation:

f(x)=‐3x+3

-3. -3

-3=-3x

divide by -3

1=x

5 0
3 years ago
What is the sum of 7/9 + 3/5
Flura [38]
The sum of 7/9 and 3/5 is 7/15
4 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for x<br> 3(5x + 4) - 20 - 13x = -4
    11·2 answers
  • What is the answer? Please
    7·1 answer
  • Please tell me the answers ASAP! This has to be done soon!
    8·1 answer
  • Pentagon PQRST and its reflection, pentagon P′Q′R′S′T′, are shown in the coordinate plane below:
    8·1 answer
  • Write an equation in point -slope form with given information
    11·1 answer
  • Is 3,9,19,33,51.. a linear or non-linear sequence?​
    8·1 answer
  • Substitute - 3 and - 6 to determine if the two expressions are equivalent.
    15·1 answer
  • Two numbers have a sum of 12 and a difference of 4. What is the smaller of the two numbers?
    8·1 answer
  • ASAP PLS HELP!!! Find the value of x
    9·2 answers
  • 59-(2c+3)=4(c+7)+c.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!