Answer:
$21.44 or answer D
Step-by-step explanation:
68.99-57=11.99
37.80 x 25/100=9.45
9.45+11.99=21.44
hope this helps you
2x^2+20x=-38 divide both sides by 2
x^2+10x=-19, halve the linear coefficient, square it, than add that value to both sides of the equation, in this case add (10/2)^2=25...
x^2+10x+25=6 now the left side is a perfect square
(x+5)^2=6 take the square root of both sides
x+5=±√6 subtract 5 from both sides
x=-5±√6 (so answer c.)
First you have to multiply 6*1=6 and 6*4=24 that would equal 246
next, you have to add a zero and multiply 1*1=1 and 1*4=4 that would come out to 410.
then you add 246+410. the answer to this equation would be the answer to the whole problem.
C. t = 2d + 3
That is the equation that represents the chart
Measurement a is 45
measurement b is 135