Answer:
Step-by-step explanation:
A
$0.81+$9.00=$9.81
Answer: $9.81
We know t<span>o find the total price, first find the amount of sales tax paid by multiplying the sales tax by the original price of the basket of watermelons.
</span><span>9%×$9=<span>?
</span></span>Percent means "out of one hundred," so <span><span><span><span>9% </span></span></span></span> is equivalent to <span>9/100 </span><span>which is also equal to 9 divided by 100.
9 divided by 100 is 0.09
</span>To find the amount of sales tax that must be paid, multiply <span><span>0.09 </span></span><span>by the original price.
So it would be 0.09*$9=$0.81
</span>
<span>To find the final price Tiffany paid, add the sales tax you just found to the original price.
$0.81+$9.00=$9.81
</span>To find the final price Tiffany paid, add the sales tax you just found to the original price.
Recall that
. So we can add twice the first equation to the second one to get
Since
, we have
so
If
, then
If
, then
So the solution set is
Answer:
Please check the formatting when posting. I'm assuming these are the equations:
y=x^2 - 2
y=−x
Step-by-step explanation:
We can either graph the equations or solve them. I use graphing - see the attachment. The lines intersect at (-2, 2) and (1,-1)
<u>1. Graphing</u>
See attached graph
(-2, 2) and (1,-1) are the intersection points
<u>2. Solving</u>
y=x^2 - 2 Use y=−x in this equation:
-x = x^2 - 2
0 = x^2 + x - 2
0 = (x+2)(x-1)
x = -2 and +1
(-2, 2) and (1,-1) are the intersection points
Boa tarde! 1287 x 6 = 7722 Unidades
Ou 77 Centenas e 22 Unidades Espero que eu tenha lhe ajudado!