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
ELEN [110]
3 years ago
13

DF=78, DE=5x-9, and EF-2x+10, find EF

Mathematics
1 answer:
lbvjy [14]3 years ago
8 0

Answer:

As e is point between df. So we can write df as

df = de + ef

As given df = 78 , de = 5x - 9 , ef = 2x + 10.

So we can write

78 = 5x - 9 + 2x + 10

78 = 7x + 1

On subtracting 1 on booth side

78 - 1 = 7x +1 - 1

77 = 7x

On dividing both side by 7.

11 = x

So x = 11.

So ef = 2x + 10 = 2*11 + 10 = 22 + 10 = 32

Step-by-step explanation:

You might be interested in
I need help with this question its due soon
slavikrds [6]

Step-by-step explanation:

(-0.4)×(-2)+(-0.4)×(-9)

formula for distributive property is if

A(B+C)

=A×B + A×C

4 0
2 years ago
Identify the terms, coefficients, and constants in the expression. 7h + 3
dexar [7]

Answer:

7h+10

Step-by-step explanation:


7 0
3 years ago
Explain how 7 x 20 is similar to 7 x 2,000
zmey [24]
The answer will be similar as 7x20=140 and 7x2000=14000, the answers are the same but x100 as 140x100=14000
20x100=2000
6 0
3 years ago
Read 2 more answers
Nick's dad wanted to measure the length of his backyard and asked Nick to do this with his footsteps. Since it was winter, they
Lerok [7]

Answer:

2244 cm

Step-by-step explanation:

The first first thing we must do is find the LCM of the following numbers

(51; 68) = 204.

This means that the first time they coincide is at 204.

Now, since his steps always coincide after 204

In Nick's case

Nick's 204 ÷ 51 = 4th step

and in the case of the father

204 ÷ 68 of his father = 3rd step.

Which means that in the 204 cm distance, there will be a total of 6 foot steps, except in the first 204 cm when your "initial" step is counted.

Replacing these values we have that the total distance will be:

67-1 (initial step) / (6 * 204) = 2244 cm

7 0
3 years ago
How can 25/9 be represented as a decimal? PLeasehelp! 1st answer is brainleuses
dolphi86 [110]

Answer:

2.8 or 2.77777

Step-by-step explanation:

9 can go into 25 less than 3 times but more than 2

5 0
3 years ago
Read 2 more answers
Other questions:
  • Question 7 of 12. Step 1 of 1
    6·1 answer
  • Find an equation for the line with the given properties,express the equation in slope-intercept form. p=(-3,5) and q=(-2,3)
    14·1 answer
  • Y=6/X; X= 9 <br> what is the answer and how do you solve this?
    7·1 answer
  • Select the following series as arithmetic, geometric, or neither. 1 + 2 + 3 + 4 + . . . + 10
    12·1 answer
  • How do some producers and consumers each rely on light form the sum
    13·1 answer
  • I have a bag of coins.In it, one third is gold, one fifth of them are silver, two seventh are bronze the rest are copper. My bag
    14·1 answer
  • Please help with this ASAP. image below
    7·2 answers
  • 80 points!
    11·1 answer
  • Find the mean proportional for each pair. SHOW YOUR SOLUTION<br><br> 1. 6, 24
    10·1 answer
  • Line AB has endpoints A(3,4) and B(-2,8). What is AB to the nearest tenth
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!