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
rjkz [21]
3 years ago
7

The area of a trapezoid is 864cm2. It has a height of 24 cm, and the length of one of its bases is 30 cm. What is the length of

the other base?
Mathematics
1 answer:
Zielflug [23.3K]3 years ago
8 0
\bf \textit{area of a trapezoid}\\\\
A=\cfrac{h(a+b)}{2}\quad 
\begin{cases}
a,b=\stackrel{bases}{\textit{parallel sides}}\\
h=height\\
---------\\
A=864\\
h=24\\
a=30
\end{cases}\implies 864=\cfrac{24(30+b)}{2}
\\\\\\
864=12(30+b)\implies \cfrac{864}{12}=30+b\implies 72=30+b
\\\\\\
42=b
You might be interested in
Evaluate 2x-y for x=3 and y= -2<br> A. 10<br> B. 14<br> C. 18<br> D. 20
USPshnik [31]
The answer is C
2(3)-(-2)
6+2
8
8 0
3 years ago
If g(x) = 3x - 5, then g -1(x) = a.) 3x + 5 b.) x+5 / 3 c.) x/3 + 5
lisov135 [29]

Answer:

-2

Step-by-step explanation:

8 0
3 years ago
A car moves at a speed that allows it to move 45 yards in 5⁄4 of a second. How long will it take a car at the same speed to move
Dimas [21]

First, to make things easier, let's turn 5/4 into a decimal given a second is equal to 1000 milliseconds.

5/4 = 1,25

1,25 * 1000 = 1250 milliseconds = 1.25 seconds


So, we've found that 45 yards can be covered in 1.25 seconds. Now we'll use the rule of 3:

45 - 1.25

80 - x


Now we solve:

(80 * 1.25) / 45 = x

100 / 45 = x

2,22... = x


So, according to our answer, 80 yards can be covered in 2,22 seconds, which in fractions would be:

2,22 =\frac{222}{100} = \frac{111}{50}


Hope it helped,


BioTeacher101

7 0
3 years ago
Read 2 more answers
HELP QUICK !’ ***What is the area of a circle with a diameter of 126 in?
Vladimir79 [104]

Answer:

49,850.64

Step-by-step explanation:

To find the area of a circle, you must use the formula pi r ^2 (pi r squared).

In this case, we are using 3.14 for pi, so we can add that into the formula.

3.1r^2

We also know the radius, so we can add that in too.

3.14 x 126 ^2

Now solve.

126^2 = 15,876

15,876 x 3.14 = 49,850.64

49,850.64 is the answer.

Hope this helped!

8 0
3 years ago
In a certain Algebra 2 class of 29 students, 18 of them play basketball and 7 of them play baseball. There are 2 students who pl
Natasha2012 [34]

Answer:

24/.29

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • If k1/2 = integer and k1/4 = integer, which is a possible value for k?
    12·1 answer
  • Between which two integers is the positive value of the square root of 75?
    5·1 answer
  • Solve for side AB. Show all your work <br> Please help!
    15·1 answer
  • What is 73% as a decimal????<br>WILL MARK AS BRAINLIEST!!!​
    10·2 answers
  • What is the answer-16&gt;5+7x
    14·1 answer
  • Suppose <br> g(x) = x^2f(x)<br> and it is known that f(3) = 5 and f '(3) = −2. Evaluate g'(3).
    6·1 answer
  • DO NOT TRUST THIS PERSON AT ALL!
    7·2 answers
  • A phone company charges for service according to the formula: C(n) = 13 +0.07%, where n is the number of minutes
    8·1 answer
  • Mary is buying tickets for a movie.
    9·1 answer
  • A retaining wall requires 36.8 cu yd of concrete. The combined amounts of cement, sand, and gavel should be 1 1/2 times the of c
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!