Answer:
42
Step-by-step explanation:
Area of a triangle is base times height divided by two
21 times 4 equals 84
84 divided by 2 = 42
Discount is 30%
find 30% of 45
percent means parts out of 100
30%=30/100=0.30
'of' means multiply
30% of $45 means
0.30 times $45=$13.50
the discount is $13.50
the amount you would need to pay is $31.50
Sum=14 + 37 + 22 + 56 + 33 = 152 => 100%
red = 14 => x%
100% / 152 = x / 14
x = 100 × 14 / 152
x = 1400 / 152
x = 9,21% = 9%
Answer:
![\boxed{x = 10.28 \%}](https://tex.z-dn.net/?f=%5Cboxed%7Bx%20%3D%2010.28%20%5C%25%7D)
Step-by-step explanation:
![\frac{(26.75)x}{100} = 2.75 \\ \boxed{x = 10.280373832}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%2826.75%29x%7D%7B100%7D%20%3D%202.75%20%5C%5C%20%20%5Cboxed%7Bx%20%3D%2010.280373832%7D)
Answer:
12.35
Step-by-step explanation: