X=9 this is the answer for question 19
Answer:
$98.75
Step-by-step explanation:
50×75÷100 = 37.5 + 50 = 87.5
87.5 × 30 ÷ 100 = 26.5
87.5 - 26.5 = 61.25
87.5 + 61.25 = 148.75
148.75 - 50 = 98.75
i hope i am right
10 cheese pizzas
use simple ratio, 3:2 (3 pepperoni for every 2 cheese)
to make the ratio bigger, we substitute the "3" pepperoni for "15" pepperoni. then take the new amount, 15/3 original, you get 5. then multiply the 2 original cheese pizzas by that 5, and you get 10 cheese pizza's.
hope that helps
In order to solve this problem, you need to use a geometric series:
![S_{n} = \frac{ a_{1}(1 - r^{n}) }{1 - r}](https://tex.z-dn.net/?f=%20S_%7Bn%7D%20%3D%20%20%5Cfrac%7B%20a_%7B1%7D%281%20-%20r%5E%7Bn%7D%29%20%7D%7B1%20-%20r%7D%20%20%20)
where:
a₁ = first term of the series = 36000
r = common rate = 10% raise, therefore 1.10
n = number of terms = 5
Therefore,
<span>
![S_{n} = \frac{ 36000(1 - 1.10^{5}) }{1 - 1.10}](https://tex.z-dn.net/?f=%20S_%7Bn%7D%20%3D%20%20%5Cfrac%7B%2036000%281%20-%201.10%5E%7B5%7D%29%20%7D%7B1%20-%201.10%7D%20%20%20)
= 219783.60 $
Luke's total earnings in five years are
<span>
219783.60 $.</span>
</span>
Answer:
$191.70
Step-by-step explanation:
total amount spent = cost of medicine + cost of tax + cost of shipping
cost of tax = 0.05 x $180 = $9
cost of shipping 0.015 x $180 = $2.70
total cost = $180 + $9 + 2.70 = $191.70