-2 - 1
2 - 1
2 - 5
Answer:
2-1
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
Moving from (1, 5) to (2, -2), x increases by 1 and y decreases by 7. The slope of the line connecting these two points has the slope m = rise / run = -7 / 1, or just -7.
Alternatively, using the slope formula,
5-[-2] 7
m = ------------ = -------- = (-7/1). The denominator would be 1.
1 - 2 -1
If f(x) varies directly with x, and f(x) = 8 when x = 6, write the direct linear variation equation.
A. f(x) = 3/4x B.f(x) = 6x C.f(x) = 8x D.f(x) = 4/3x
Find the constant of variation for the relationship f(x)= 30x. A.10 B.30 C.x D.f(x)
If f(x) varies directly with x, and f(x) = 56 when x = 8, find the value of f(x) when x = 2 A.4 B.7 C.8 D.14
Answer:
C) 48.786, 152°
Step-by-step explanation:
To add the vectors u, v and w, we first need to rewrite each vector in component form (where vectors are represented using the unit vectors i and j along the x and y axes).
The (x, y) components of a vector, given its magnitude (r) and direction (θ), are (r cos θ, r sin θ), where θ is measured in the anticlockwise direction from the positive x-axis.
Every vector in two dimensions is made up of horizontal and vertical components, so any vector can be expressed as a sum of i and j unit vectors. Therefore, the i + y form of a vector is:
So, the component form of the given vectors are:
Sum the vectors:
Calculate the magnitude of the resultant vector ||R||:
The direction θ can be found by finding the angle with the horizontal, which is given by:
As the resultant vector is in quadrant II (since the i component is negative and the j component is positive), we need to add 180° to the value of tan⁻¹(y/x). Therefore:
Therefore:
First we need to find the difference of the tow fractions. But to find it, we need to convert the mixed fraction to improper fraction so we can ease our calculation.
Remember that to convert a mixed fraction to an improper fraction, we just need to multiply the denominator of the fraction part by the whole number and add the result to the numerator of the fraction part; the denominator of the improper fraction will be the same denominator of the fraction part of the mixed fraction:
Now we can find the difference:
Remember that to add or subtract fractions, both fraction must have the same denominator, so we are multiplying both numerator and denominator of our second fraction by 2:
Now to find what fraction of our difference is to the longer ride, we just need to divide our difference by the longer ride:
We ca conclude the difference in length between the two rides isof the longer ride.