Answer:
x = 4
Step-by-step explanation:
10x + 140 = 180
10x = 40
x = 4
Answer:
24 minutes.
Step-by-step explanation:
Let D represent the distance from school to home and T represent time.
We have been given that your brother takes 40 minutes to get to school.


You take 30 minutes to get to school.

Your brother left 4 minutes before you did, so distance traveled by him would be:

You speed: 
You will catch your brother, when both distances would be same:

Cross multiply:

Use distributive property:



Switch sides:



Therefore, it will take you 24 minutes to catch up your brother.
<span>The question is asking for the total of 36, 78, 198, 475 and 620. The correct option is B, that is, 1,407. Total refers to summation of a set of number, thus if the given numbers are added together, the sum total will be 1, 407. That is, 36 + 78 +198+475 + 620 =1, 407. Other words that can be used in place of total are: summation, addition or plus.</span>
Answer:
27 > b
Step-by-step explanation:
7 > -20 + b
7 + 20 > -20 + 20 + b
27 > b