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3 years ago

Determine whether the vectors u and v are parallel, orthogonal, or neither.

2 answers:

3 0

The dot product here is 10(9) + 6(5)=120
so the vectors are not orthogonal
u.v = |u| x |v| cos (theta) ; theta is the angle between them

we know from above that u.v = 120

|u| = sqrt[10^2+6^2]=11.66
|v| = sqrt[9^2+5^2]=10.29

so we know:

theta =cos^-1 120/(11.66x10.29)
so theta = 25 degrees

Gala2k [10]3 years ago

3 0

The answer is Parallel

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X - y = 0 A, B, C, or D

skad [1K]

Answer: D

Step-by-step explanation:

Using the equation y = mx + b.

m represents the slope

b represents where the line crosses the y axis.

We can attempt to set up the equation given in the same way.

x - y = 0

Add y to both sides and the 0 can drop out.

x = y

This is also equal to:

y = x

In this equation the m is equal to 1 and the b is equal to 0.

Taking this into account the answer is D.

8 0

3 years ago

Y=-2x-21 determine the intercepts of the line (,) (,) ASAPPPP

Nesterboy [21]

Answer:

x intercept (10.5,0)

y intercept (0, -21)

Step-by-step explanation:

y=-2x-21

there are two intercept for a line

x intercept, the point of given equation of line which lies on x axis.

For x intercept corodinate of y is o

Thus, value x intercept is form (x,0)

putting these value in y=-2x-21, we find x intercept

0=-2x-21

2x = 21

x = 21/2 = 10.5

Thus, x intercept (10.5,0)

Y intercept, the point of given equation of line which lies on y axis.

For Y intercept coordinate of x is o

Thus, value y intercept is form (0,y)

putting these value in y=-2x-21, we find y intercept

y = -2*0 -21

y = -21

Thus, y intercept (0, -21)

5 0

3 years ago

Write the standard form of the line that contains a y-intercept of -3 and passes through the point (3,0). Include your

Ymorist [56]

Answer:

y = -3x + 9 is your answer.

Step-by-step explanation:

So your y-intercept is the slope. Here is the equation we are going to use:

y - y_1 = m(x - x_1)

y_1 = 0

x_1 = 3

m = -3.

y - 0 = -3(x - 3)

y - 0 = -3x + 9

y = -3x + 9 is your answer.

7 0

3 years ago

PLZ HELP!!!!!!!!!!!!

Ira Lisetskai [31]

P = 2l + 2w
48 = 2(14) + 2w
48 = 28 + 2w

Therefore you could use the equation A.) 2n + 28 = 48, to find the value of N.

6 0

3 years ago

Julie’s family took a 4-day trip. Julie’s mother wrote an equation to calculate their gas mileage, m, in miles per gallon. Let d

Brut [27]

Answer:

$m = 26$

Step-by-step explanation:

Given

See attachment for missing details

Required

Determine the gas mileage for the trip

First, we calculate the miles driven

$Miles = 476 + 439 + 382 + 263$

$Miles = 1560$ --- d

Next, we calculate the amount of gas used

$Gas = 15.0 + 13.5 + 15.4 + 16.1$

$Gas = 60.0$ ---- g

The gas mileage is then calculated as:

$m = \frac{d}{g}$

$m = \frac{1560}{60}$

$m = 26$

Hence, the gas mileage is 26 miles per gallon

7 0

3 years ago