Step-by-step explanation:
speed = distance/time
speed = 871÷13
speed = 67 mph
distance = speed x time
distance = 67mph X 9hrs
distance = 603 m
The cost price of 1 jacket is $23.25 and the cost price of 3 jackets is $69.75.
<h3>
What is the cost price?</h3>
Cost price is the total amount of money to produce a given product or provide a given service.
Given cost prices for jackets are,
Jackets Cost Price
2 46.5
5 116. 25
7 162. 75
We need to calculate the cost price of 3 jackets. First, we need to find out the cost price of one jacket.



Now the cost price of 3 jackets is given as,


Hence we can conclude that the cost price of 3 jackets is $69.75.
To know more about the cost price, follow the link given below.
brainly.com/question/11027396.
Answer:
4:5
Step-by-step explanation:
If there are 12 boys and 15 girls, the ratio of boys to girls will be 12:15.
However, this can be simplified by dividing each number by 3. This can be done since both 12 and 15 are divisible by 3.
12:15
= 4:5
So, the ratio of boys to girls in Timara's class is 4:5
X-width
2x-3-length
A=lxw
104=(2x-3)(x)
104=2x^2-3x
52=x^2-3/2(x)
52+9/16=x^2-3/2(x)+9/16
841/16=(x-3/4)^2
29/4=x-3/4
x=32/4 or 8
length is 2(8)-3 which is 13 and width is 8