X and y
x:y=3:5
or
x/y=3/5
when 4 is subtracted from x and 8 is added to y new ratio is 2:7
(x-4)/(y+8)=2/7
we have
x/y=3/5
(x-4)/(y+8)=2/7
get rid o frationc
x/y=3/5
times both sides by 5y
5x=3y
(x-4)/(y+8)=2/7
times both sides by 7(y+8)
7(x-4)=2(y+8)
7x-28=2y+16
add 28 both sides
7x=44+2y
we have
5x=3y
and
7x=2y+44
multiply first equation by 2 and seecond equaiton by 3
10x=6y and 21x=6y+132
sub 10x for 6y
21x=10x+132
minus 10x both sides
11x=132
divide both sides by 11
x=12
x/y=3/5
12/y=3/5
times both sides by 5y
60=3y
divide both sid esyb 3
20=y
12 and 20
the greater is 20
Answer:
Mean: 6
Median: 6
Range: 8
Step-by-step explanation:
Mean is found by adding up all the values in the set and dividing by the amount of numbers in the set (in this one there are 8) 2+3+4+5+7+8+9+10=48. 48 divided by 8 = 6.
Median is the number in the middle, when the numbers in the set are ordered from least to greatest. Since there are two middle numbers in this set we add them together and divide by 2. 5+7=12. 12 divided by 2 = 6.
Range is found by taking the largest number and subtracting the smallest number from it. 10-2=8.
You find the total distance traveled in an hour and put that over the ratio of an hour to get MPH.
Example: 4 miles traveled in 1/2 an hour means you're going 8 miles per hour.
Yes the product of two integers with different sings can be positive or negative if is negative and negative equal a positive
