Answer:
132 history textbooks, 87 chemistry textbooks
Step-by-step explanation:
![C + H = 219\\C = H - 45\\](https://tex.z-dn.net/?f=C%20%2B%20H%20%3D%20219%5C%5CC%20%3D%20H%20-%2045%5C%5C)
![1. H - 45 + H = 219\\2. 2H = 264\\3. H = 132](https://tex.z-dn.net/?f=1.%20H%20-%2045%20%2B%20H%20%3D%20219%5C%5C2.%202H%20%3D%20264%5C%5C3.%20H%20%3D%20132)
H = 132,
C = 132 - 45 = 87
Answer:
$72 more
Step-by-step explanation:
the way we solve this is by first calculating how much he used to make in a forty hour work week.
lets take 18 x 40. that gives us $720. Ebert used to make $720 dollars a week.
Now for each of those hours the pay is increased by 10%. we can find 10% of 18 by just multiplying 18 by 1.1 or 110%
that gives us 1.8 now we just add 1.8 to 18 which gives us 19.8
all thats left is multiplying 40 x 19.8 then subtracting 720
that gives us 72 left over.
hope this helps !
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if this did please consider marking brainliest i would appreciate it
Answer:
![\displaystyle 3x - y = 19\:or\:y = 3x - 19](https://tex.z-dn.net/?f=%5Cdisplaystyle%203x%20-%20y%20%3D%2019%5C%3Aor%5C%3Ay%20%3D%203x%20-%2019)
Step-by-step explanation:
Plug the information into the Slope-Intercept Formula:
![\displaystyle 5 = 3[8] + b \hookrightarrow 5 = 24 + b; -19 = b \\ \\ y = 3x - 19](https://tex.z-dn.net/?f=%5Cdisplaystyle%205%20%3D%203%5B8%5D%20%2B%20b%20%5Chookrightarrow%205%20%3D%2024%20%2B%20b%3B%20-19%20%3D%20b%20%5C%5C%20%5C%5C%20y%20%3D%203x%20-%2019)
Suppose you need to write this equation in standard form. You would follow these procedures:
y = 3x - 19
- 3x - 3x
__________
![\displaystyle -3x + y = -19](https://tex.z-dn.net/?f=%5Cdisplaystyle%20-3x%20%2B%20y%20%3D%20-19)
*Now, you <em>can</em> leave the standard equation like this, but UNIVERSALLY, the A-term is positive, so you must multiply the negative out as well.
![\displaystyle \boxed{3x - y = 19}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cboxed%7B3x%20-%20y%20%3D%2019%7D)
I am joyous to assist you at any time.
Answer:
It is the second answer
Step-by-step explanation:
The standard form of an ellipse is
x^2/a^2 + y^2/b^2 or x^2/b^2 + y^2/a^2 = 1
If the x is the main axis we use the first form. If the y is the main axis we use the second form. We will use the second form.
our a is 3 and our b is 4
x^2/3^2 + y^2/4^2
Answer:
$177.38
Step-by-step explanation:
The first thing you want to do is figure out your variables. In A = Pe^(rt), "A" is the end amount (AKA however much money you have after however much time), "P" is the principle amount (AKA however much you have to start with), "r" is the rate, and "t" is the time. Take all the information they gave you in the problem and try to place it in one of these categories.
Tyler opened a savings account 6 years ago. Ding-ding, we've got a time. The account earns 2% interest, compounded annually. There's our rate. If the current balance is $200.00, how much did he deposit initially?
So, sort these out. t = 6 years. r = 2%, or r = .02. The current balance is $200.00, so is this your end amount or the money you had to start with? Well, since the question is asking you to find how much Tyler deposited initially, you know for sure $200.00 is your end amount ("A"). Let's find out what he started with.
200 = Pe^(.02)(6)
Note that e is not a variable, but a value. You won't ever replace it; it's part of your formula. What you want to solve for here is "P" to get your starting amount. Divide both sides by e^(.02)(6), and you'll see:
P = 200/[e^(.02)(6)] = 177.3840873
Since we're talking money, round that to the nearest cent like your question asked, and you get $177.38. You can check your answer by plugging this value back into A = Pe^(rt) with $177.38 being the principle amount. You get $200 back, so the answer is correct.