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
Gekata [30.6K]
4 years ago
14

I Need Help Pls ASAP

Mathematics
1 answer:
wolverine [178]4 years ago
7 0
We know that
∠ECD=∠ACB------> given in the problem
∠DEC=∠CAB------> 90°
so
∠EDC=∠ABC

therefore
triangles EDC and ABC are similar
<span>So
the ratio of the legs are equal</span>

 \frac{x}{9} = \frac{140-x}{81}  \\ 81*x=9*(140-x) \\ 81x+9x=1260 \\ 90x=1260 \\ x=14

AC=140-x \\ AC=140-14 \\ AC=126

the answer is
AC is equal to 126
You might be interested in
How do I solve 2x-y≥1<br> 2x+3y≤6
Ne4ueva [31]

Answer:

(-4,2)

Step-by-step explanation:

8 0
4 years ago
What is x- and y- intercept of -7x + 2y= 14
Novosadov [1.4K]
The y-intercept is (0,7) and the x-intercept is (-2,0).
4 0
3 years ago
Multiply and reduce to lowest terms. Convert into a mixed number if necessary. 4x5/9=
QveST [7]
2 and 1/5 is your answer.

decimal form=2.2
4 0
4 years ago
Help me please and pls explain how you got your answer.
enyata [817]

l \parallel m\Rightarrow  m\angle2 =m\angle6 = 102°\\ m\angle1 + m\angle2 = 180°\Leftrightarrow m\angle1 = 180° - m\angle2 = 180° - 102° = 78°

3 0
4 years ago
Evelyn can run 3 miles in 40 minutes. Which equation can be solved to find m, the number of miles Evelyn can run in 60 minutes?
inna [77]

Answer:

m= 4.5 miles

Step-by-step explanation:

Let the number of miles Evelyn can run be m and can be modeled by the equation below

m= kx

Where x Is the Minutes

When m= 3

x= 40

3= k40

k= 3/40

If x= 60

m=3/40(60)

m = (60*3)/40

m= 180/40

m= 4.5 miles

7 0
3 years ago
Other questions:
  • Can some one tell me the way to convert polar points to rectangular? Example: (-1, 5pi/2)
    15·1 answer
  • What's 6 3/4 divided by 1 7/8
    12·2 answers
  • Geometry question, Thanks if you help
    10·1 answer
  • Is 457,014 divisible by 10
    10·2 answers
  • HELP WITH MATH!!!!!!!!!!!!
    14·1 answer
  • a stack of 500 sheets of paper is 1.875 inches tall. Diego guess that each piece of paper and 0.015 inches thick. Explain how yo
    11·1 answer
  • Hi peeps Brainly deleted my “question” so I’m redoing it pls say hi I’m bored :(
    11·2 answers
  • D/5 = -6 please help
    8·1 answer
  • A. Solve -8=(X + 2)/4
    11·1 answer
  • What is 1.07 + 42.5 HELP PLSSSSSSSSSSSS
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!