Answer:
Step-by-step explanation:
add up their speed.
combined speed = x+ 1 x + 10
( 2 x + 10 )
Time = 5 hours
Distance = 750 miles
Distance = speed * time
( 2 x 10 )* 5 = 750
10 x + 50 = 750
10 x = 750 + -50
10 x = 700
/ 10
x= 70 mph Car A
Car B 70 + 10 = 80 mph
Denominator is your answer. https://www.mathsisfun.com/definitions/denominator.html this site could help you with your fraction problems!
Answer:
5 times 4
Step-by-step explanation:
No step needed
Answer:
24-8n
Step-by-step explanation:
FORMULA: a1 (n-1) d
a1: 1st term
d: difference
16 (n-1) -8
16-8n+8= 24-8n
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Answer:
3 different choices
Step-by-step explanation:
This problem is a combination problem: She has 3 friends, and we want to know how many groups of 2 friends there are. We can solve this using the combination of 3 choose 2:
C(3,2) = 3!(1! * 2!) = 3*2/2 = 3 possibilities
If we call her three friends A, B and C, the groups that can be formed are:
A and B
A and C
B and C