<em>Answer:</em>
<em>x=4 y=3</em>
<em>Step-by-step explanation:</em>
<em>rewrite the equations- y=x-1 2x-3y=-1</em>
<em>solve y=x-1 for y</em>
<em>y=x-1</em>
<em>sub for x-1 for y in 2x-3y=-1</em>
<em>2x-3y=-1</em>
<em>2x-3(x-1)=-1</em>
<em>-x+3=-1</em>
<em>-x+3+-3=-1+-3</em>
<em>-x=-4</em>
<em>divide both sides by -4</em>
<em>x=4</em>
<em>sub 4 for x in y=x-1</em>
<em>y=x-1</em>
<em>y=4-1</em>
<em>y=3</em>
<em>WE ARE VENOM</em>
1) "Subtract -7a+1 from 7+a" means -7a+1 is getting taken away from 7+a, so this can be mathematically expressed as:
Starting expression: (7+a)-(-7a+1)
Distributive property with negatives: 7+a+7a-1
Combine like terms: 6+8a
So the answer for the first one is 6+8a
2) "Subtract -4v-2 from -2-5v" means -4v-2 is getting taken away from -2-5v, so this can be mathematically expressed as:
Starting expression: (-2-5v)-(-4v-2)
Distributive property with negatives: -2-5v+4v+2
Combine like terms: -v
So the answer for the second one is -v
Hope these explanations are clear.
Answer:
h=14.9966
Step-by-step explanation:
1. The formula of the volume is:
V=
2. So you have to substitute the the data that you have:
3533.5
=
3. To have the area of the base (ab) you have to get the formula of the circle's area and solve:
A=
(
)
A=(
)
A=3.1416(225)
A=706.86in
4. Now you have the area of the base:
3533.5=
5. In this step you are going to clear the variable which is the heigh (h) and solve as an equation:
3533.5=
3533.5(3)=706.86(h)
=h
h=14.9966
The result may vary depending on the value of that you use,
To find the zeros of this equation you need to first set it equal to zero
2x2 + 16x - 9 = 0
But since you can't FOIL this equation you need to move the non-variable number over
2x2 +16x = 9
Now solve for x by pulling an x out of the equation
x(2x + 16) = 9
x = 9
2x +16 = 9
2x = -7
x = -7/2
So your zeros would be at x = 9, and -7/2
Answer:
x=0
Step-by-step explanation:
-4-9(6x+6)=-58
-4-54x-54=-58
Combine like terms
-54x-58=-58
add 58 to both sides
-54x=0
divide both sides by -54
x=0
