The sign of the x-coordinate changes; the y-coordinate stays the same.
Answer:
x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction
Step-by-step explanation:
we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
therefore
x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction
Answer:C=40 degrees D=76 degrees
Step-by-step explanation:
Because of a theorem angle c and d equal angle DEF
so here is our equation:4y+(7y+6)=116
Open the parentheses
4y+7y+6=116
-6 on both sides
4y+7y=110
11y=110
Divide both sides by 11
y=10
Now we have to substitute
C=4y=4(10)=40
D=7y+6=7(10)+6=70+6=76