Answer:
The greatest common factor is 5.
Step-by-step explanation:
The prime factorisation of 10, 30 and 45 is,
10 = 2 × 5
30 = 2 × 3 × 5
45 = 3 × 3 × 5
The prime factor '5' is common in the factorisation of 10, 30 and 45
So, the greatest common factor of 10, 30 and 45 is 5.
Answer:
6
Step-by-step explanation:
15 - 3 = 12, divide that by 2 and your answer is 6.
The statement, "Julian's sister said he walked 1/5 mile" cannot be agreed because Julian totally walked 
miles.
<u>Solution:</u>
Given that,
- Julian walked 6/10 of a mile to his friends house
- Another 35/100 mile to the store
- He walked 1/4 of a mile back home
To find total distance walked by Julian we have to add the above stated values. That is, 
Factors of 10 = 
Factors of 100 = 
Factors of 4 = 
Therefore, the least common factor of 10, 100 and 4 is 100. With like denominators we can operate on just the numerators,
Which can also be written as 
.
So, from the above calculation it can be said that Julian walked 
.
Remark
Make up a proportion that relates the tree and its properties to the stick and its properties.
Givens
Stick height (s_h) = 4
Stick shadow(s_s) = 2
Tree shadow = t_s = 18
Tree height = x
Formula
s_h / s_s = x / t_s
Substitute and solve.
4/2 = x / 18 Cross multiply
4*18 = 2 * x
72 = 2x Divide by 2
72/2 = x
x = 36
The height of the tree is 36 feet.
Let n = number of records.
Each record costs $7, so n records cost 7n.
She then spent $3, so the total spent is 3n + 3.
She spent a total of $24, so 3n + 3 must equal 24. That gives us the following equation.
7n + 3 = 24
Subtract 3 from both sides.
7n = 21
Divide both sides by 7.
n = 3
Answer: She bought 3 records.
