There are all parallelograms.
To find their area we need to use only one formula.
A=base*height
Everything is given, so
1) A=b*h=5.3*4=21.2 km²
2) A=b*h= 11*10.7= 117.7 mi²
3) A=b*h= 10.5*7.9 =82.95 mi²
Answer:
A = 1.5x + 1400
Step-by-step explanation:
Let us represent
The number of Adults = x
The number is children = y
The total amount of money raised = A
We are told in the question that:
A pancake breakfast fundraiser served 400 people and charged $5 for adults and $3.50 for children.
Hence:
x + y = 400.... Equation 1
y = 400 - x
Hence:
A = $5 × x + $3.50 × y
A = 5x + 3.50y
Where y = 400 - x
A = 5x + 3.50(400 - x)
A = 5x + 1400 - 3.50x
A = 1.5x + 1400
The equation for how much money was raised is given as:
A = 1.5x + 1400