Answer: 10+12+6+4=32
100/32=3.125
12x3.125= 37.5 percent of the people that were surveyed chose piano.
Answer:
x = 23
Step-by-step explanation:
3x + 7 = x + 53 because vertical angles are congruent. So just solve...
3x - x + 7 = x + 53 - x
2x + 7 = 53
2x + 7 - 7 = 53 - 7
2x = 46
x = 23
Answer:
The percentage change is 140%
Step-by-step explanation:
Given
---- initial dimension
--- new width
--- new dimension
Required
The percentage increment
The length remains constant because only the width is extended.
The new area is:


Make L the subject

Substitute values for A and W


--- this is the length of the garden
Calculate the initial width:

Make W1 the subject



So, the initial area is:



The percentage change in area is:




Express as percentage


Answer:
$0.78
Step-by-step explanation:
Discount = Original Price x Discount %/100
Discount = 2.6 × 70/100
Discount = 2.6 x 0.7
You save = $1.82
Final Price = Original Price - Discount
Final Price = 2.6 - 1.82
Final Price = $0.78