I’m assuming the 3 and 4 are exponents??
The answer is
2.1708 x 10^7
If you are answering a question or about how many pages he has in his book, it is 550 pages in his book total. If it's how much longer Naoya will have to read to finish their book it is 10 hours.
$25! Think about it, to get $15.90 as your discounted price, the unknown number must be multiplied by 60% to get $15.90. If you wanna find the original price, do the opposite! What is $15.90 divided by .6? $25!
Answer:
y = 0.5x² +3x +5
Step-by-step explanation:
There are several ways to do this. The most straightforward may be to fill three table values into the equation and solve for a, b, c. Using the first three values, the equations would be ...
y = ax² + bx + c
- 0.5 = 9a -3b +c . . . . first point
- 1.0 = 4a -2b +c . . . . second point
- 2.5 = a -b +c . . . . . . third point
Solving this system of equations by your favorite method gives ...
a = 0.5, b = 3, c = 5
so the quadratic is ...
y = 0.5x² +3x +5
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Since you are given the y-intercept (0, 5), you know the constant in the equation is 5. The given table values are equally-spaced, so finding differences can be informative.
first differences: 1 -0.5 = 0.5; 2.5 -1 = 1.5; 5 -2.5 = 2.5; 8.5 -5 = 3.5
second differences: 1.5 -0.5 = 1; 2.5 -1.5 = 1; 3.5 -2.5 = 1
That is, second differences are 1, which value is double the "a" coefficient of the equation. So, we know the equation is ...
y = 0.5x² +bx +5
Filling in x=1, we get
8.5 = 0.5 +b +5
3 = b
and the equation is ...
y = 0.5x² +3x +5
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You can also let your graphing calculator or spreadsheet program show you a quadratic regression equation through these points. It gives the same result.
Answer:
x=45/4
Decimal Form:
x=11.25
Mixed Number Form:
x=11 1/4
Step-by-step explanation: PLEASE MARK ME BRANLIST AND IF U CAN ANSWER MY QUESTION FROM MY PROFIL WOULD BE NICE.
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