Answer:
x = 15
Step-by-step explanation:
Create the proportion: 5/7 = x/21
Multiply both sides by 21: 15 = x
Answer:
The actual park has 0.7776 square meters
Step-by-step explanation:
To solve this we first have to find the value of the scale
We know that the width of the model is 8cm and that of the true park is 72cm², so if we divide 72 by 8 we will obtain the value of the scale
72 / 8 = 9
To find out how much the park area has, the park first we have to multiply 96cm² by the scale
As the scale of 9 is made for width and length, when we calculate the area it will be multiplied 2 times by 9, so to calculate the real area we have to multiply it 2 times
96cm² * 9 * 9 = 7776cm²
if we want the result in square meters we simply have to divide the result by 100²
7776cm²/100² = 7776cm² / 10,000
0.7776m²
The actual park has 0.7776 square meters
4x = 2/5 is the same equation
Multiply 1/4 on both sides to clear the 4.
x = (2/5)(1/4) =2/20= 1/10
CHECK
(1/10)* 4= 4/10 = 2/5
Answer: The pizza cost 5.04 in 2000 Step-by-step Explanation: Step One: set the price of the pizza in 1980 equals to the price in 2000
(55 + 150 + 325 + 510 + 780 + 990) - (40 + 150 + 300 + 500 + 800 + 1000) = 2810 - 1790 = 20
