Answer:
370
Step-by-step explanation:
Round each answer into easier to add numbers. 92 and 91 round down to 90. 9 rounds up to 10.
Answer:
Concept: Higher Level Mathematics
- You have a density curve, aka probability
- You are asked to find the height
- Hence 0-40F has 40 total integers or values of X(probability)
- Hence you have a total Area of

- Integrate f(x) to get 0.025.
- Hence the answer is A
- Rate positively and give brainlist
Multiply both sides of the second equation by 100 to get rid of the decimals:
0.05<em>n</em> + 0.10<em>d</em> = 1.50
==> 5<em>n</em> + 10<em>d</em> = 150
Multiply both sides of the first equation by -5:
<em>n</em> + <em>d</em> = 21
==> -5<em>n</em> - 5<em>d</em> = -105
Add the two equations together:
(5<em>n</em> + 10<em>d</em>) + (-5<em>n</em> - 5<em>d</em>) = 150 + (-105)
Notice that the terms containing <em>n</em> get eliminated and we can solve for <em>d</em> :
(5<em>n</em> - 5<em>n</em>) + (10<em>d</em> - 5<em>d</em>) = 150 - 105
5<em>d</em> = 45
<em>d</em> = 45/5 = 9
Plug this into either original equation to solve for <em>n</em>. Doing this with the first equation is easiest:
<em>n</em> + 9 = 21
<em>n</em> = 21 - 9 = 12
So Donna used 12 nickels and 9 dimes.
Answer:
Step-by-step explanation:
5+1+3+8+2=19
3/19 = 16%
Answer:
$27
Step-by-step explanation:
18 times $1.50 = 27 dollars a year