Answer:
x=½
y=5
Step-by-step explanation:
(8x+7y=39)2
16x+14y=78
<u>4</u><u>x</u><u>-</u><u>1</u><u>4</u><u>y</u><u>=</u><u>-</u><u>6</u><u>8</u> add the two equations
20x=10.
divide both sides by 20
x=½
8x+7y=39
4+7y=39
7y=39-4
7y=35
y=5
1. 5 to 20 ---> c. 20 to 80
(5/20 and 20/80, both have the same answer(ratio) which is equal to 1/4)
2. 5 to 40 ---> e. 11 to 88
(5/40 and 11/88, both have the same answer(ratio) which is equal to 1/8)
3. 9 to 45 ---> b. 7 to 35
(9/45 and 7/35, both have the same answer(ratio) which is equal to 1/5)
4. 2 to 20 ---> a. 1 to 10
(2/20 and 1/10, both have the same answer(ratio) which is equal to 1/10)
5. 4 to 12 ---> d. 10 to 30
(4/12 and 10/30, both have the same answer(ratio) which is equal to 1/3)
Answer:
36
Step-by-step explanation:
Cross multiply
27 x 16 all divided by 12 =36
Answer:
y= 5x
Step-by-step explanation:
since each x number is 1/5 of the y, it's 5 times x = y
3ft per second on a still sidewalk (27/9) , 11ft on the moving sidewalk.(99/9)
Hope this helps!
