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
lyudmila [28]
3 years ago
14

If AC = 4x-60 and BD = 30-x, find BD (GIVING BRAINLIEST) The figure given is a rectangle

Mathematics
1 answer:
Ray Of Light [21]3 years ago
4 0

Answer:

12

Step-by-step explanation:

AC = BD (as the diagonal of the rectangle)

4x-60=30-x

4x+x = 30+60

5x = 90

x = 90/5

x = 18

=> BD = 30-18 = 12

You might be interested in
Which of the following expressions is 8x + 16 not equivalent
yKpoI14uk [10]

10x-2x-20+4 is incorrect

5 0
3 years ago
If a1=7 and d=28, find a9
Mariulka [41]

Answer:

63

Step-by-step explanation:

Since a1=7 and the question is to find a9, you just have to multiply 7 and 9 which is 63

6 0
3 years ago
Sally can paint a room in 9 hours while it takes Steve 3 hours to paint the same room. How long would it take them to paint the
Archy [21]
You can solve this one by adding their rates, but you have to invert the numbers they give you to find the rate. Rate is measured in something per unit of time, and "per" indicates division. So the rates are: 1/3 of an hour (Sally) and 1/6 of an hour (Steve). So add the rates: 1/3 + 1/6 = 1/2. (1/3 is 2/6, and 2/6 + 1/6 = 3/6). Since their combined rate is 1/2 of a room in one hour, it takes them two hours to paint the room.

This answer makes sense: It takes Sally three hours by herself; with Steve's help, she's faster, but not THAT much faster, because he's pretty slow. You can often spot-check word problem answers like this by giving it a common sense once-over. If we came up with four hours, that would clearly be wrong: it should take her LONGER if she's getting help.
7 0
3 years ago
Read 2 more answers
3xy + 5 if x = -4, y = 2
Zanzabum

Answer:

it will be -19

Step-by-step explanation:

i hope it helps you

7 0
3 years ago
Read 2 more answers
Someone please help or i’ll be failing geometry this year
Vlad [161]

Step-by-step explanation:

I don't know what constructions you were taught.

a "similar" triangle is a triangle with exactly the same angles as the other triangle, but the lengths of all sides are stretched or shortened by the same scaling factor f.

by saying 1:2 she means the second triangle should have sides with twice the lengths of the first triangle (f=2).

and the extra challenge - same basic thing. she allows you to pick one of the two triangles as reference. and then you need to draw a third triangle (again with the same angles) with the side lengths extended by the scaling factor f of 4/3.

I would draw the triangles right on top of each other with the same starting corner (let's call it A) for all 3.

we would get the triangles ABC, AMN and AXY.

the points B and C would be then halfway on AM and AN.

and M and N would then a bit before X and Y on AX and AY.

the beauty is, you only need to construct 2 sides of every new triangle down to the new endpoints. the third side is automatically scaled correctly, and you only need to connect these new endpoints.

let's assume you draw a triangle (just very simple) ABC with all side lengths being 3. so, AB=3, AC=3, BC=3.

now you draw AMN by extending AB and AC to a side length of 6 (f=2) creating M and N, and you connect M and N.

and then you can create the third triangle AXY by extending AM and AN by a factor of 4/3 to side lengths of 8 (4/3 × 6 = 8) creating new end points X and Y. and you connect X and Y.

and that is it. all 3 triangles are similar (the same angles), and all sides of a triangle have the same length ratio to the sides of the other triangle(s).

4 0
3 years ago
Other questions:
  • Solve for c.<br> 4(3 + c)+c=c+4<br> Sun
    9·2 answers
  • I need help asap (please help)
    6·1 answer
  • What is the difference between 1/2 and 1 whole?
    15·2 answers
  • A rectangular prism has a volume of 2,288 cubic meters, a height of 12 meters, and a length of 10 meters. what is the measure of
    14·1 answer
  • Given the function g(x) = (5 - x)^3 , what is the value of g(2)?
    7·2 answers
  • Can you help me please​
    12·1 answer
  • Some one plz help me with this math qustion
    13·2 answers
  • Solve (2x + 3) - (9x - 3)
    15·1 answer
  • Which function is a horizontal translation of the parent quadratic function, f(x)=x^2?<br> HELP PLS
    12·1 answer
  • Every day, Kim practices volleyball and clarinet. Each day, she practices volleyball for 2.5 hours. If after 8 days she practice
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!