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
vlada-n [284]
3 years ago
12

Find the missing variable for a tralezoid. A=68^2 b= h=4 B=21

Mathematics
2 answers:
Bezzdna [24]3 years ago
6 0
The answer is:  " 2291 units " .
____________________________________________
Explanation:
____________________________________________
Formula for "Area of a trapezoid" :
____________________________________________
Area = (1/2) * (base length 1 + base length 2) * height;

or:  A = (1/2) * (b + B) * h.

We are missing the value for "b" one of the base lengths.

However, since:  A = 68² (given) ;  B (the other base length) = 21;  and the perpendicular height, "h" = 4 ;  we can plug this values into the formula, and solve for "b" ;
________________________________________________
A = (1/2) * (b + B) * h ;  ↔  68² = (1/2) * (b + 21) * 4 ;

 ↔  <span>4624 = 2 (b + 21) = 2b + 42 ;

</span> ↔  <span>4624 = 2b + 42 ; 

</span> ↔  <span>2b + 42 = 4624 ;

Subtract "42" from each side of the equation:

     2b + 42 - 42 = 4624 - 42 ;

to get:   2b = 4582 ;
</span>___________________________________________________
    Now, divide each side of the equation by: "2" ; to isolate "b" on one side of the equation; and to solve for "b" ;
___________________________________________________
             2b / 2 = 4582 / 2 ;
___________________________________________________
 to get:    b = 2291 units.
___________________________________________________
Lina20 [59]3 years ago
5 0
2291 = The answer :)
You might be interested in
Solve the system of equations below by graphing.
AleksandrR [38]
I think it would be B hope it helps
5 0
3 years ago
Read 2 more answers
The mean of four consecutive even numbers is 15.
mote1985 [20]
Find what the sum of the #s could be by multiplying 15*4 since there's 4 #s . 15*4=60 so the sum of the 4 #s is 60 

4 0
3 years ago
How can you generate x-3y+5 from the expression x+y+4+2y+1
vladimir2022 [97]

Answer: Here is the explanation. also it it +3y not -3y

Step-by-step explanation:

x+y+4+2y+1=x+3y+5 because

2y+y=3y

so now you have x+3y+4+1

4+1=5

now you have: x+3y+5

if you do not understand, What i am trying to say is, you need to add all of the same things.

3 0
3 years ago
Mary has 3 red marbles and 7 yellow marbles in a bag. What is the probability of she draw 3 marbles at the same time, all of the
LenaWriter [7]
The probability would be 3/10 or 30%
3 0
3 years ago
Find missing number sequence 1,2,5,10,13,__,__,58,61
lys-0071 [83]
The pattern is *2 +3 *2 +3 *2 +3 .... 1 *2 = 2 , 2+3 = 5 , 5 *2 = 10, 10 +3 = 13, 13*2 = ?...
7 0
3 years ago
Other questions:
  • How much money is 200 quarters 150 dimes and 300 pennies?
    5·1 answer
  • which of the following answer choices is equal to the sum of three consecutive odd integers? 153,154,155,156 or 157
    12·1 answer
  • Multiplying fractions
    10·2 answers
  • HELP!!!!!!!!!! PLEASE!!!!!!!WILL MARK AS BRAINLIEST
    12·1 answer
  • Find the distance between the points A(13,2) and B(7,10)
    10·1 answer
  • Simplify the equation by combining
    5·2 answers
  • A space is shaped like a parallelogram with the base of 26 feet and the height of nine what is the area
    15·2 answers
  • Which equation has no soultion
    9·1 answer
  • Please help!! Need the answer
    5·1 answer
  • Find the probability that in a family of 6 children there will be at least 2 boys​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!