Answer:
sum of the polynomials is 
Step-by-step explanation:
Given polynomial is (7 x^3– 4 x^2) + (2 x^3 +3 x)
adding x^3 terms, now we get


Therefore the sum of given polynomial is

Answer:
=52
Step-by-step explanation:
easy
Answer:

Step-by-step explanation:
Dice has 6 sides.
2 is one of the six.
First die landing on two is

The second has to land on a five.
5 is one of the six.
Second die landing on five is

× 

Answer:
Vertical
Step-by-step explanation:
They are vertical angles to each other
The height or the distance between the two parallel sides of the given trapezium is 20 cm.
A trapezium or trapezoid is a two-dimensional geometric shape that has 4 sides, with one pair of parallel sides.
The parallel sides of a trapezium are called bases while the distance between them is the altitude or height.
The formula for the area of a trapezoid is given by
A = (a + b)/2 x h
where a and b are the parallel bases and h is the height.
Using this formula, the height or the distance between the two parallel sides can be computed.
A = (a + b)/2 x h
120 cm^2 = (5 cm + 7 cm) / 2 x h
120 = (12 / 2) x h
120 = 6h
h = 120 / 6
h = 20 cm
For more examples on solving the area of a trapezium, visit brainly.com/question/16904048.
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