Three-fourths of the people at a concert are children. if there are  87  children, what is the total number of people at the concert?

116 people

Step-by-step explanation:

At a concert the total number of children = 87

Children are 3/4 of the total number of people at the concert.

Let the total number of people be 'x'

Now the equation would be

= () ×  () =  () × (87)

x = 116

Therefore, the total number of people are 116 at the concert.

c. 65°

step-by-step explanation:

we are given a triangle with two known angles, 62° and 53°, while the third angle x is unknown and we are to find its value.

we know that the sum of angles in a triangle is equal to a total of 180 degrees. so we can write it as:

x + 62° + 53° = 180°

solving to find the value of x:

x = 180 - (62 + 53) = 65°

therefore, the value of x in this triangle is 65°.

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step-by-step explanation:

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