Answer:
53.8
Step-by-step explanation:
45+8= 8
then add the decimal 0.0+0.8= 0.8
53.8
Y=-10 and the second one is 13 I think
Answer:
x=-7
Step-by-step explanation:
Simplifying
3(x + -2) = 5x + 8
Reorder the terms:
3(-2 + x) = 5x + 8
(-2 * 3 + x * 3) = 5x + 8
(-6 + 3x) = 5x + 8
Reorder the terms:
-6 + 3x = 8 + 5x
Solving
-6 + 3x = 8 + 5x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5x' to each side of the equation.
-6 + 3x + -5x = 8 + 5x + -5x
Combine like terms: 3x + -5x = -2x
-6 + -2x = 8 + 5x + -5x
Combine like terms: 5x + -5x = 0
-6 + -2x = 8 + 0
-6 + -2x = 8
Add '6' to each side of the equation.
-6 + 6 + -2x = 8 + 6
Combine like terms: -6 + 6 = 0
0 + -2x = 8 + 6
-2x = 8 + 6
Combine like terms: 8 + 6 = 14
-2x = 14
Divide each side by '-2'.
x = -7
Simplifying
x = -7
Answer:
The height of triangle EFG is 9 units
Step-by-step explanation:
see the attached figure to better understand the problem
step 1
Find the area of a square ABCD
The area of a square is equal to

where
b is the length side of the square
we have

substitute

step 2
Find the height of triangle EFG
The area of triangle EFG is equal to

where
b is the base of triangle
h is the height of triangle
we have

---> area of triangle EFG is the same that the area of square ABCD
substitute the given values in the formula

solve for h

therefore
The height of triangle EFG is 9 units
-1/4 the negative reciprocal of the slope of the red line