Answer:
Step-by-step explanation:
The area of a trapezium is given as;
Area =
(a + b)h
where: a is the length of the upper side, b is the length of its base and h is its height.
This implies that; a = x - 4, b = x + 5, h = 2x and area = 351
Thus,
351 =
((x - 4) + (x + 50)) 2x
= (x - 4 + x + 5) x
531 = (2x + 1) x
= 2
+ x
So that;
2
+ x - 531 = 0
This gives a quadratic equation.
Answer:
20: 9t+12
21: 18x
22: 105x+9
24: 156r
25: 3x+11
26: 25.2x
28: 56a
29: 1.5n
30: 13q
Step-by-step explanation:
hope this helped
brainliest please
Answer: = 
Step-by-step explanation:



Answer:

Step-by-step explanation:
Use the Pythagorean Theorem

and
are either opposite or adjacent
is the hypotenuse.
1. Look for the right angle. (the little box). The right angle "points" to the hypotenuse. In this case, the hypotenuse is 25.
2. Because we know the hypotenuse is 25. We know that 24 is our adjacent. Meaning our missing side is the opposite.
3. Plug in the numbers. 
4. Solve:






Hope this helps! Lmk if you have questions.
Answer:
80 is the dividend
Step-by-step explanation:
dividend ÷ divisor = quotient
80 is the dividend