Y = mx + b
y = 3/5(x) + b
-4 = 3/5(2) + b
-4 = -2.4 + b
b = -4 + 2.4
b = -1.6 (-8/5)
y = 3/5x - 8/5.
Answer: 11.5 ft
Step-by-step explanation:
The length of the shadow of the building = length of the shadow - distance of the building
= 52 - 32
= 20
Let the height the shadow strike the side of the building be h
then by similar shape rule
h / 20 = 30 / 52
52h = 30 x 20
52h = 600
h = 600/52
h = 11.53846154
h ≈ 11.5
Answer:
63
Step-by-step explanation:
A composite number is a whole number. It can be defined as a number that is divisible by 1, itself and other factors. This means a composite number has two or more factors. A prime number cannot be a composite number.
The seven smallest composite numbers are:
4, 6, 8, 9, 10, 14, 16,
Their total sum = 4 + 6 + 8 + 9 + 10 + 14 + 16 = 63
Therefore, the sum of the seven smallest composite numbers which cannot be determined to be composite simply by using the divisibility rules (for 2,3,4,5,6,8,9 or 10) is 63.
Answer:
C
Step-by-step explanation:
7/(b-36)=28/b
28b-1008=7b
21b=1008
b=48
a/72=28/b
a=72x28/48
a=42
