Answer:
x = 3.25
y =4.75
Step-by-step explanation:
In order to Solve the following system of equations below algebraically using substitution method we say that;
let;
8x - 4y = 7
..................... equation 1
x + y = 8.......................... equation 2
from equation2
x + y = 8.......................... equation 2
x = 8 - y.............................. equation 3
substitute for x in equation 1
8x - 4y = 7
..................... equation 1
8(8-y) - 4y = 7
64-8y-4y=7
64-12y=7
collect the like terms
64-7 = 12y
57= 12y
divide both sides by the coefficient of y which is 12
57/12 = 12y/12
4.75 = y
y =4.75
put y = 4.75 in equation 3
x = 8 - y.............................. equation 3
x = 8 -4.75
x = 3.25
to check if your answer is correct, put the value of x and y in either equation 1 or 2
from equation 2
x + y = 8.......................... equation 2
3.25 + 4.75 =8
8=8.................... proved
1/36
a 6 on a die is only on one face, so that would be 1/6 of the whole die
to roll a double would mean take 1/6 x 1/6
Answer:
150 degrees
Step-by-step explanation:
Use the equation below to find the sum of all the interior angles in this polygon:
(number of sides - 2)*180
number of sides = 6
(6-2)*(180) = 4*(180) = 720
Now that you know the total sum, subtract all other angles to find x:
720 - 90 - 162 - 101 - 96 - 121 = 150
Answer:
I couldnt write it on the computer because i wanted to draw other stuff to help you understand so i did it on paper. The photo is below!
Step-by-step explanation:
