Answer:
55.866 ft
Step-by-step explanation:
Use Pythagorean Theorem:
a² + b² = c²
(39)² + (40)² = c²
3121 = c²
Square root of both sides
c = 55.866 ft should be the answer.
Hope this helps
Angle COD equals angle AJL
Angle DCO equals Angle LAJ
Side OC equals side JA is all true expect for the first one
In 57,733 the values are:
5 is for tens
The first 7 is for ones
The second 7 is for tenths
The first 3 is for hundredths
The second 3 is for thousandths
Two set of digit in which one digit is ten times as great as the other are 3 and 3, as well as 7 and 7
It's because 0,03 is ten times as much as 0,003 and 7 is ten times as much as 0,7.
Answer:
12 boys
Step-by-step explanation:
From the above question:
Number of boys = 3
Number of girls = 2
Boys: Girls
3:2
Let :
a = boys
b = girls
Hence, a : b = 3 : 2
a/b = 3/2
Cross Multiply
2a = 3b .......... Equation 1
a = 3b/2
If four more girls join the class, there will be the same number of boys and girls
Hence,
a: b + 4 = 3 : 3
a/b + 4 = 3/3
Cross Multiply
3a = 3(b + 4)
3a = 3b + 12 ........ Equation (2)
From Equation 1: a = 3b/2
Substitute 3b/2 for a in Equation 2 we have:
3a = 3b + 12 .........Equation 2
3(3b/2) = 3b + 12
9b/2 = 3b + 12
Cross Multiply
9b = 2(3b + 12)
9b= 6b + 24
9b - 6b = 24
3b = 24
b = 8
Substitute 8 for b in Equation 1
a = 3b/2
a = 3 × 8/2
a = 24/2
a = 12
Therefore, the number of boys in the class is 12
