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
1. 6 times 6 = 36 cm
2. 9 times 11 = 99 yd
3. 1/2(13)(8+3)
6.5(11)
71.5 ft
4. 12 times 4 = 48 m
5. 5 times 3 = 15 in
6. 8 times 4 = 32 mm
7. 1/2(8)(10+2)
4(12)
48 yd
8. 4 times 4 = 16 cm
9. 12 times 15 = 180 in
The answer would be 2:5 because there is 2 parts of cement and 5 parts of sand and they want to know the ratio of cement to sand
A ratio is simply comparing something and it compared the cent to the sand which is 2:5 or you can right it as 2 to 5 or 2/5 as a fraction
Y-5 = (5-7)/(0+2) (x+2)
y-7 = -2/2 (x+2)
y -7 = -x-2
y = -x+5
Mark brainliest please
Answer:
It is a cavity.
Step-by-step explanation:
If it is not treated well you may feel pain in your gum.
