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
Reika [66]
3 years ago
14

Geometry math question no Guessing and Please show work thank you

Mathematics
2 answers:
Lelu [443]3 years ago
5 0

DE + EF = 4x+2

DE = x+7

EF = 7

Substitute these in

x + 7 + 7 = 4x + 2

x + 14 = 4x + 2

subtract x from both sides

14 = 3x + 2

subtract 2 from both sides

3x = 12

divide both sides by 3

x = 4

substitute this in to find the length of DE

DE = x + 7

(4) + 7 = 11

the answer is 11

makvit [3.9K]3 years ago
3 0

From figure we can see that:

DE=DF -EF

x+7 = 4x+2-7

combining like terms

x+7=4x-5

subtract x on the right side from 4x

7=(4x-x) -5

7=3x-5

add 5 on the left side

7+5=3x

12=3x

divide both sides by 3

x=4

DE=x+7 =4+7

DE=11

You might be interested in
What is the value of x? Enter your answer in the box. x = ° The image shows a 7sided polygon A B C D E F G with all angle measur
ryzh [129]

Answer:

m∠G = 98°

Step-by-step explanation:

Step 1: Find the sum of interior angles

180(7 - 2)

180(5)

900

Step 2: Subtract known angles

900 - (146 + 122 + 142 + 140 + 110 + 142)

x = 98°

6 0
3 years ago
Read 2 more answers
7 1/2 sticks of butter are needed to make 5 cakes. How much butter is needed to make one cake?
LenaWriter [7]

Answer:

1 1/2

Step-by-step explanation:

because when you divide 7.5 by 5 you get 1.5

8 0
3 years ago
Read 2 more answers
Is this a proportional relationship
luda_lava [24]
I think it is because it goes through the line tell me if I’m right

7 0
2 years ago
The price of a 5-minute phone call is $1.75. What is the price of a 19-minute phone call?
Mila [183]

Answer:

$6.65

Step-by-step explanation:

You could start by seeing the price of a 1 minute phone call. if you divide 1.75 by 5 it is 0.35. that means 1 minute costs $0.35. so the equation would be 0.35 times 19. which is 6.65 dollars.

7 0
3 years ago
Read 2 more answers
PLEASE HELP ME
anastassius [24]

the unscented candles burn faster at a rate of (1/3) inches/ hour

Step-by-step explanation:

scented candles:

(1/12) / (20/60) = 1/4 inches/ hour

unscented candles:

(1/6) / (30/ 60) = 1/3 inches/ hour

hope it helps!

4 0
3 years ago
Other questions:
  • One line passes through the points (−12,16) and (-1, 38). A second line has the equation 2y+x=23. Are these lines parallel, perp
    5·1 answer
  • What is the equation in point-slope form of the line passing through (−2, 0) and (2, 8)?
    9·1 answer
  • Please someone help <br><br> Which expression has a value of 48?
    14·1 answer
  • A study found that the average time a person spent exercising each week was 84 minutes, but there could be up to a 3% error in t
    14·1 answer
  • Bree had 52 pens scattered on her desk.She wanted to organize them.
    5·1 answer
  • John Adams purchased 100 shares of XYZ Corporation for $25 a share and paid a commission of $125. The current price of the stock
    14·1 answer
  • I NEED HELPPPP <br> Which graph represents the inequality 3y−5x≥−6?
    6·1 answer
  • If f(x)=x³-3x²+5, what is f(2)?<br>help:3​
    8·1 answer
  • 6) Sara has a loan for $1800 at a rate of 16% annually. How much interest will she pay in 4 years?
    9·1 answer
  • Jamie's older brother and his three friends want to split the cost of lunch they also want to leave a 15% tip how much should ea
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!