The students rented 4 small cars and 8 large cars.
Step-by-step explanation:
Given,
Number of people in small car = 4
Number of people in large car = 7
Total people in both type of cars = 72
Let,
x represent the number of small cars rented.
y represent the number of large cars rented.
According to given statement;
4x+7y=72 Eqn 1
y = 2x Eqn 2
Putting value of y from Eqn 2 in Eqn 1
Dividing both sides by 18
Putting x=4 in Eqn 2
The students rented 4 small cars and 8 large cars.
Keywords: linear equation, substitution method
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Answer:
Step-by-step explanation:
let speed of Stephen=x mph
speed of Diana=x+4
then
6x+6(x+4)=276
divide by 6
x+x+4=276/6=46
2x=46-4=42
x=42/2=21
Stephen is traveling at 21 mph.
Diana is traveling at 21+4=25 mph.
Answer: 7.2%
Step-by-step explanation:
First find the difference between the amounts.
7,400, 000 - 6, 900,000 = 500, 000
Now divide the obtain number by the original number which is 6,900,000
500, 000/ 6,900,000 = 0.07246
Multiply 0.07246 by 100 to convert it to a percent.
0.07246 = 7.2463..%
Round it to the nearest tenth of a percent.
7.2463.. rounded to the nearest tenth is 7.2%
It's most probably a C) exponential
