Hello
-4x + 11y = 15
x = 2y
Ok, we need to solve x = 2y for x
Lets start by substitute 2y for x in -4x + 11y = 15
-4x + 11y = 15
-4(2y) + 11y = 15
-8y + 11y = 15
3y = 15
Divide both sides by 3
3y/3 = 15/3
Y = 5
Again, substitute 5 for y in x= 2y
x = 2y
x = 2(5)
x = 10
Final answer : X = 10 and y = 5
Good luck!
Answer:
66 I am pretty sure
Step-by-step explanation:
6 x 2 divided by 2 = 6
6 + 6 = 12 x 10 divided by 2 = 60
add them together
60 + 6 = 66
Answer:
219 + 159 <= x <= 369 + 309
378 <= x <= 678
Step-by-step explanation:
Answer:
Step-by-step explanation:
F=9/5C+32 should be F = (9/5)C + 32
We are given 111 degrees F and want the same temperature in degrees Celcius.
In F = (9/5)C + 32 multiply all three terms by 5:
5F = 9C + 160, which can be solved for C:
5F - 160 = 9C
Let F = 111. Then 555 - 160 = 9C, or
395 = 9C
Dividing both sides by 9, we get C = 395/9 = 43 8/9 degrees C
