Problema Solution
Samuel has a collection of toy cars. His favorites are the 27 red ones, which make up 60% of his collection. How many toy cars does Samuel have?
Answer provided by our tutors
let x = the number of toy cars that Samuel has
60% of x are 27
0.60*x = 27
by solving we find
x = 45 cars
Answer:
5
Step-by-step explanation:
7−2×(5−4)
7−2×1
7−2
5
Answer:
1) G
2) B
3) I
4) H
Step-by-step explanation:
Perimeter of a triangle formula:
P = a + b + c
1)
P = x + 6 + 3x + 2 + 2x + 4
P = 6x + 12
2)
P = 6x + 4 + 7x + 1 + 5x + 7
P = 18x + 12
3)
P = 4x - 3 + 3x + 5x - 6
P = 12x - 9
4)
P = 6x - 8 + 3x + 7 + 5x - 3
P = 14x - 4
Question 1Consider this: j starts at 5 (when k=0) and 7 is added every time k increases by 1. If k increases by 2, j will increase by
14.
Question 2If 1/6 is really 0.16, then if we use inverse operations and multiply 0.16 by 6, it should equal 1, right? However, 0.16 times 6 is only 0.96!
4/5 is not equal to 0.08 because 0.08 times 5 is only 0.4,
1/3 is not equal to 0.3 because 0.3 times 3 is only 0.9.
1/4 <em>
is</em>
equal to 0.25, because 0.25 times 4 is 1.
Question 3
What percent of 250 is 75?
Well, a percent is basically just a fraction out of 100.
Take a look at these equivalent fractions.
Say that the original number is x. Since we know that the answer is the same, we can say 31-2x = 11-x
31-2x = 11-x
31-11=-x+2x
X = 20