Answer:
x =-1
y =-1
Step-by-step explanation:
to solve this system of equation, using substiution method
3x-4y=1 ........................ equation 1
x=2y+1 ............................ equation 2
subbstitute for x into equation 1
3x-4y=1 ........................ equation 1
3(2y + 1) - 4y = 1
6y + 3 -4y = 1
2y + 3 = 1
collect the like terms
2y = 1- 3
2y= -2
divide both sides by the coefficient of y which is y
2y/2 = -2/2
y = -1
put the value of y =-1 into equation 2
x=2y+1 ............................ equation 2
x = 2(-1) + 1
x = -2 + 1
x = -1
therefore x =-1 y = -1
BEDMAS
2^3 + 30 / (10 - 15 / 3)
Do everything in brackets first
First we do 15/3 which is = 5
Then 10 - 5 = 5
Now we have 2^3 + 30 / 5
Next we will do exponents so we simplify 2^3 which is the same as 2×2×2 = 8
8 + 30 / 5
Next we do division so 30/5 = 6
Finally, 8 + 6 = 14
Answer:
Step-by-step explanation:
2y=11-3
2y=8
Y=8/2
Y=4
Answer:
7
Step-by-step explanation:
if the stick is 7.5 divide that by 3 and you get 2.5 so divide 17.5 by 2.5 and you get 7 .
Answer:
Step-by-step explanation:
volume of soil = 12×8×(12-2) = 960 in³
