Answer:
x-intercept = -6
<h2>y-intercept = -21</h2>
Step-by-step explanation:
x - intercept is for y = 0
y - intercept is for x = 0.
We have y = -2x - 21.
Substitute:
x = 0 → y = -2(0) - 12 = 0 - 12 = -12
y = 0 → 0 = -2x - 12 <em>add 2x to both sides</em>
2x = -12 <em>divide both sides by 2</em>
x = -6
Fifteen because 208/26 = 8 and 223 - 208 = 15
Answer:
After graduation, I got a job with a commerce firm selling various products.
In the United States, our currency is the American dollar.
Looking at Egyptian hieroglyphics, it is amazing to think that people could record their thoughts such a long time ago.
Ancient Egyptians used papyrus to make things such as baskets or sandals.
It can be quite costly to export goods internationally.
Parchment was an old type of paper, that was much thicker than modern paper today.
If we are eliminating x, we would multiply the 2nd equation by -5
5x + 18y = 23
x + 3y = 2....multiply by -5
-----------------
5x + 18y = 23
-5x - 15y = - 10 (result of multiplying by -5)
----------------add
0 + 3y = 13.....bye-bye x :)
Answer:
∴35.97 mg caffeine would be left in the system after 5 hours.
Step-by-step explanation:
Given that,
A cup of coffee has approximately 310 mg of caffeine.
Caffeine decrease at a rate 35% per hour.
Exponential Function:
y(t)= Amount caffeine after t hours
= Initial amount of caffeine
r= rate of decrease
t = Time in hour.
Here y(t)=?, = 310 mg, r=35%=0.35, t= 5 hours
=35.97 mg
∴35.97 mg caffeine would be left in the system after 5 hours.
