Step-by-step explanation:
the answer is in the image above
1. x=6z+13/5
2. y= -2z-16/3
3. z= 6x/7+y/7+9/7
Explanations
1 Add 4x to both sides
5x=6z+13
Divide 5 by both sides
x=6z+13/5
2 Add 4z to both sides
-6y=32+4z
Divide 6 by both sides
-6y/-6 = 32/-6 + 4z/-6
Simplify
y=-2(z+8)/3 of y= -2z-16/3
3. Subtract 6x+y from both sides
-7z=-9-6x-y
Divide 7 by both sides
-7z/-7 = -9/-7 - 6x/-7 -y/-7
Simplify
z=6x/7+y/7+9/7
Answer:
8
Step-by-step explanation:
0 = –x^2 + 4x – 2
This is of the form
ax^2 +bx +c
a = -1 b = 4 x = -2
The discriminant is
b^2 -4ac
4^2 - 4(-1)(-2)
16 - 8
8
Marge would drive 773.33 miles in 10 hours
first you divide 348 miles by 4.5 hours then multiply the total amount by 10 then that's how you get773.33 miles
Answer:
1
Step-by-step explanation:
