Answer:
x= -1/3
y= -3 1/3
Step-by-step explanation:
Make both of them into y=Mx+b form
y=-x-3
y=(-x-7)/2
Substitute the x-3 in the first equation for the y in the second one.
x-3=(-x-7)/2
2x-6=-x-7
3x=-1
x=-1/3
Now that we have x, we can solve for y.
y=-x-3
y=-1/3-3
y=-3 1/3
Answer:
A
Step-by-step explanation:
Answer:
96 degrees
Step-by-step explanation:
The angle bisectors splits the two angles mentioned down the middle so the 2 angles are equal to each other.
4x + 4 = 2(x + 13) Distribute the 2
4x + 4 = 2x + 26 Subtract 2x from both sides
2x + 4 = 26 Subtract 4 from both sides
2x = 22 Divide both sides by 2
x = 11 Plug that back into either the right side or the left side of the original equation
4x + 4
4(11) + 4
44 + 4
48. Each angle is 48 degrees. 48 + 48 is 96
Answer:
On sale at a deficit of -20% from the original price is saying that the item is at 80% of its original value.
Converting percentages using decimals is a very easy way to fine original values.
So:
$76.80 = 80% of the original value
convert the 80% into a decimal = 0.80
The maths:
$76.80 ÷ 0.8 = $96.00
$96.00 = the original value.
If you need the answer only, you can just scroll to the bottom.
So, we know that a right angle is 90 degrees, and we know that it is divided in two parts. So, we must set up the equation knowing the angles.
3x + 60 = 90.
So, we need to begin simplifying the equation until we have isolated the variable. We can start by subtracting 60 from 90 to get rid of the 60 on the left side of the equation.
90 - 60 = 30.
So, our simplified version is:
3x = 30.
So, we need to isolate the variable. To do that, we must divide both sides by 3.
3x/3 = 1x = x.
So, we have :
X = 30/3.
Simplify 30/3.
30/3 = 10.
So:
X = 10
