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
Shtirlitz [24]
3 years ago
7

In the diagram below , what is the value of a?

Mathematics
1 answer:
ipn [44]3 years ago
5 0

Step-by-step explanation:

solution

let,

AB = 9

AC = 9 + 3a - 6

AD = 12

AE = 12 + 20

now

AB/AD = AC/AE

or, 9/12 = 3 + 3a / 22

by cross multiply

or, 9×22 = 12×(3 + 3a)

or, 198 = 36 + 36a

or, (198 - 36)/36 = a

or, 4.5 = a

You might be interested in
What is the equation of the line that passes through the point (-5,2 ) and has the slope of -2/5
valina [46]

Answer:

y = -2/5x + 2

Step-by-step explanation:

8 0
3 years ago
20x2 + 3x + 5 = 7<br><br> Help
Mrac [35]

Answer:

3/20, -3/10

Step-by-step explanation:

Its a quadratic equation, use the quadratic formula. (-b+-\sqrt{b^2-4ac\\})/2a

20x^2+3x-2=0

(-3+-\sqrt{9+80})/40

(-3+-9)/40

So you get 6/40=3/20 and -12/40=-3/10

3 0
3 years ago
Read 2 more answers
The cube shown has side length 0.7 metres.
Vinil7 [7]

Answer:

294cm^2

Step-by-step explanation:

0.7*0.7=0.49

0.49*6=2.94m

294cm^2

4 0
3 years ago
Read 2 more answers
What is the median of 4,3,5,9,3,4
goldfiish [28.3K]

Answer:

THE ANSWER IS 4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the sales tax rate if the sale tax on the purchase of a $240 dvd player was $15.60
vekshin1

Answer: 6.5%

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Hook wants to set aside $2000 this year for a vacation. She plans on saving $48 dollars each week. There are 52 weeks in a year.
    8·1 answer
  • Which is greater 36km or 36000m
    9·2 answers
  • Jackson wants to divide 2/5 pound box of trail mix into smal bags. Each of the bags will hold 1/10 pound of trail mix. How many
    9·2 answers
  • Juliana wants to find the mass of a watermelon. what unit should she use?
    14·1 answer
  • Multiply the polynomials (4x^2+3x+7(8x-5)
    5·1 answer
  • What is the volume?<br> 2 mm<br> 8 mm<br> 4 mm<br> cubic millimeters
    6·1 answer
  • Write the solutions for x^2=-9
    9·1 answer
  • Find the value of x.
    15·1 answer
  • -1/4+3/4 please help I feel dumb for not knowing but I’m trying
    6·1 answer
  • Solve 4(x + 2) = 20
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!