Answer:
13+n
Step-by-step explanation:
Answer:
C or the bottom left one
Step-by-step explanation:
Answer:
12 green marbles
Step-by-step explanation:
first we know that there are 39 red and blue marbles, so 3x+10x=39 x=3
since the amount of green marbles is 4x, and we know x=3, x*4=12
Answer:
3.5588 x 10⁸
Step-by-step explanation:
(3.1 x 10³) (1.148 x 10⁵) = (3.1 x 1.148) (10³ x 10⁵)
= 3.5588 x 10⁸
Part A
c - number of washed cars
Answer: 400 + 5c > 900
Part B
400 + 5c > 900 | - 400
400 + 5c - 400 > 900 - 400
5c > 500 | : 5
5c : 5 > 500 : 5
c > 100
Answer: 100 cars
