Answer:
The two angles are 85 and 95 degrees
Step-by-step explanation:
Supplementary angles add to 180
Let x be one angle
The supplement is 10 less, ( x-10)
They add to 180
x+ ( x-10) = 180
2x -10 = 180
Add 10 to each side
2x-10+10 =180-10
2x= 190
Divide by 2
2x/2 =190/2
x=95
The other angle is 95-10 = 85
The two angles are 85 and 95 degrees
2x^2-8x-24=0
Divide the whole equation by 2.
x^2-4x-12=0
Complete the square
x^2-4x+4-16=0
(x-2)^2 -16=0
(x-2)^2=16
Take the square root of each side.
(x-2)=4 and (-(x-2))=4
x=6 and x=-2
I assume #3 is 19 because the slope of the line is still the same.
Hope this is right and it helps! I'm not very sure though.
Answer:
B.
Step-by-step explanation:
I plugged it into a graphing calculator which got me this.
This college cost and savings calculator is the ideal tool for your college planning needs. It combines a college cost calculator with a 529 college savings calculator. Obtain a personalized projection of your future college costs by entering your child's age, the type of college you're saving for, and your household income. This calculator shows you how much to save for college in a 529 college savings plan. You can adjust the monthly contribution to see how much monthly contributions can compound over time and the percentage of total college costs your savings will cover.