To multiply, multiply the numerators together and the denominators together.
Example: 1/2 x 3/4 = 3/8
To divide, multiply the first fraction by the reciprocal of the second.
Example: 1/2 / 3/4 -> 1/2 x 4/3 = 4/6
1/-3 or 4/-12, as long as you multiply or divide the numerator and the denominator with the same number the fraction will be equivalent. To get 1/-3 I divided 2 with 2 and -6 with 2.
Answer:
The answer to your question is: (1/2, 5)
Step-by-step explanation:
Parabola f(x) = 8x² - 8x + 7
y = 8x² - 8x + 7
Vertical Parabola equation
( x - h)² = 4p (y - k) Transform the original equation to this form
8x² - 8x = y - 7
8(x² - x + ( )²) = y - 7 Complete squares
8 (x² - x + (1/2)²) = y - 7 + 2 Simplification
8 (x² - x + 1/4) = y - 5
(x - 1/2)² = 1/8 (y - 5)
Finally Vertex
(1/2 , 5)
20:200
?:700
200×3.5=700
20×3.5=?
?=70
He can use 70 liters of gasoline on a trip of 700km
Answer:
15 dog heights;
Step-by-step explanation:
The formula to be used here is where:
- is the confidence level
- is the margin of error for a confidence level
- is the critical value for the confidence level
- is the population standard deviation
- is the sample size
We are given that:
To determine the minimum sample size, , we plug our given values into the formula and solve for
Don't forget to round up here! This means that actually.
Therefore, if we want to be 95% confident that the sample mean is within 1 inch of the true population mean, the minimum sample size that can be taken is 15 dog heights.
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