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
k0ka [10]
3 years ago
13

If DE=1.5m-9 and EF=4.5m-42 what is the value of DF (equilateral triangle)

Mathematics
1 answer:
11111nata11111 [884]3 years ago
3 0

Answer:

DF = 7.5

Step-by-step explanation:

Since the 3 sides are congruent, then

EF = DE , that is

4.5m - 42 = 1.5m - 9 ( subtract 1.5m from both sides )

3m - 42 = - 9 ( add 42 to both sides )

3m = 33 ( divide both sides by 3 )

m = 11

Thus

DE = 1.5m - 9 = 1.5(11) - 9 = 16.5 - 9 = 7.5

Then

DF = 7.5

You might be interested in
Please help ASAPppppppp
astraxan [27]

Answer:

206 miles more

Step-by-step explanation:

Divide 2240 and 28 and you get 280 then divide 2368 and 32 and subtract 280- 74

7 0
3 years ago
Read 2 more answers
A local florist charges $15 for delivery plus $2.75 per flower for all flower arrangements. When Marcus got the bill for a flowe
ikadub [295]
What are the options????
7 0
3 years ago
Which of the following expressions has the greatest value?
zimovet [89]
I believe the answer is B: 3 + 7 + (-10).
4 0
3 years ago
Read 2 more answers
The area of the base of the oblique pentagonal pyramid is 50 cm^2 and the distance from the apex to the center of the pentagon i
Verdich [7]
The complete question in the attached figure

Part a) 
we know that
ABC is a right triangle
∠ACB=45°
AC=hypotenuse------> 6√2 cm
sin 45=AB/AC-----> AB=AC*sin 45----> AB=6√2*√2/2----> AB=6 cm

the answer part a) is
AB=6 cm

Part b) 
we know that
volume of the pyramid=(1/3)*Area of the base*height
area of the base=50 cm²
height=6 cm
so
volume of the pyramid=(1/3)*50*6----> 100 cm³

the answer part b) is 
100 cm³

5 0
3 years ago
Khalil with me six times as many baskets at John during basketball practice
ycow [4]

Answer:

Step-by-step explanation:

how many baskets does john have?

8 0
3 years ago
Other questions:
  • PLS HELP ME ASAP LIKE NOW PLSSSSS WILL GIVE 30 POINTS AND BRAINLIEST BUT I NEED THE ANWSER NOW PLS!!!!!!! ( Respond the question
    13·2 answers
  • A study was conducted to determine the proportion of American teenagers between 13 and 17 who smoke. Previous surveys showed tha
    14·1 answer
  • Can anyone tell the answer for the 3rd qouestion
    6·1 answer
  • In ΔKLM, the measure of ∠M=90°, the measure of ∠L=76°, and LM = 99 feet. Find the length of KL to the nearest tenth of a foot.
    5·1 answer
  • Într-un cimitir există 7 chiparoși și 288 tufe de tuia. La fiecare mormânt există cel puțin o tufă de tuia. Numărul celor cu dou
    8·1 answer
  • Solving y=5/2x-1 and y=-1/2x+5 on a graph
    13·1 answer
  • CAN YOU EXPLAIN <br>7. If A = 2x + 3 and B = x^2 – 5x + 1, what is the value of A - 5B?<br>​
    14·1 answer
  • 2x^3/3y equivalent expressions
    10·1 answer
  • A few questions here sryy
    11·1 answer
  • Use the distributive property to remove the parentheses.<br> (v + 10)7
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!