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
Anit [1.1K]
3 years ago
8

Please answer this and thank you If DE=4x+10, EF=2-1, and DF=9x-15, find DF.

Mathematics
1 answer:
professor190 [17]3 years ago
8 0
I hope that 2-1 means 21.

DE + EF = DF
4x + 10 + 21 = 9x - 15
4x + 31 = 9x - 15
31 = 9x - 4x - 15
31 = 5x - 15
46 = 5x
x = 9 1/5 = 9.2

You want 9x - 15
9*9.2 - 15
82.8 - 15
67.8 <<<<< answer. 
If I have given the wrong meaning to 2-1 (which could mean 1) leave another note and I will correct my work. 
You might be interested in
What is the mean of the following set of numbers? 32, 31, 37, 44 a. 13 b. 34 c. 36
ELEN [110]
Mean is average

so we have 4 numbers
sum them then divide by 4

(32+31+37+44)=144
divide by 4
144/4=36

answer is C
6 0
4 years ago
Need help the last one is 1,-5 would really appreciate it
artcher [175]

Answer:

3,1

Step-by-step explanation:

4 0
3 years ago
Which side lengths form a right triangle?
Stels [109]

Answer:

B) 1, 8, √65

Step-by-step explanation:

For 3 side lengths to form a triangle the sum of two random sides must be bigger than the third side and their differences must be smaller than the third side.

1+8 > √65 because √65 is approximately 8.1

8-1 < √65

4 0
3 years ago
Read 2 more answers
A diver descends to a depth of –25.6 feet relative to sea level. How many feet must the diver ascend to reach sea level?
MArishka [77]

Answer:

the Answer would be c

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
What is the rate of change: y=x+5
const2013 [10]

Answer:

x or 1x.

Step-by-step explanation:

The rate of change is slope.

Slope=m

y=mx+b

y=<u>x</u>+5

x is the same thing as 1x. So...

4 0
2 years ago
Other questions:
  • 0.65,0.59,3/5 least to greatest
    13·1 answer
  • Three business partners, Q,R, and S agree to divide their total profit for a certain year in the ratios 2:5:8, respectively. If
    11·1 answer
  • PLEASE HELP<br><br> Need this ASAP
    5·2 answers
  • What are the First 4 terms 12-n
    8·1 answer
  • The height above ground (in feet) of a projectile is given by the function h(t)=-16t^2+64t+10, where t is the number of seconds
    8·1 answer
  • Solve the equation 3= d+2<br> Will give brainliest be quick plz
    13·2 answers
  • Factor 4x^2-4x-8<br> Please help
    15·2 answers
  • I need the answer because I can’t i need help
    12·1 answer
  • The temperature went from -12°F to 18°F. How much did the temperature change
    11·1 answer
  • HELP ME PLEASE!!!!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!