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kati45 [8]
3 years ago
15

Area of a triangle can be found using the formula A = 1/2 bh where B is the base of the triangle and H is the height of the tria

ngle. Express the area of the triangle as a monomial

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

The correct option is option 3

Step-by-step explanation:

Monomials are algebraic expressions that contain one term. It can be variables combined together to make one single term. It can be a single variable combined many times. As long as it is one single entity, it is a monomial

Given the formula for the area of the right angles triangle above to be

A =1/2bh

Where

b = 6x = base of the right angle triangle and

h = 7x = height of the right angle triangle.

The area would be

A = 1/2 × 7x × 6x

A= 42x^2 / 2

A= 21x^2 inches^2

Also written as

21x^2 squared inches

21x^2 is a monomial

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Joan and her brother Justin left a hotel at the same time, driving in opposite directions at constant rates. After traveling for
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Answer:

Joan drive with a speed of 55 miles per hour.

Step-by-step explanation:

Given:- Travelling time (t) = 4 hours.

Travelled distance (d) = 480 miles.

Speed of Justin is 10 miles per hour faster than Joan.

To find:- Speed of Joan = ?

Solution:-

Let speed of Joan be x,

therefore speed of Justin = x+10          ---------------(from given)

Now, Total speed of Joan and Justin = x+x+10

Total speed of Joan and Justin = 2x+10 ------------(1)

Now formula for speed is,

Speed = \frac{distance}{time}

2x+10=\frac{480}{4}                        -------------(from 1 and given)

2x+10=120

2x=120-10

2x=110

\therefore x=\frac{110}{2}

\therefore x= 55

as x is the speed of Joan,

Therefore Joan drive with a speed of 55 miles per hour.

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