All categories

2 years ago

Find the quantity if v=5i-7j and w=3i+2j ||v||-||w||

1 answer:

3 0

$\begin{cases} v=5i-7j\\\\ w=3i+2j \end{cases}\qquad \begin{cases} < \stackrel{a}{5}~~,~~\stackrel{b}{-7} > \\\\ < \stackrel{a}{3}~~,~~\stackrel{b}{2} > \end{cases}\qquad \qquad \stackrel{magnitude}{\sqrt{a^2 + b^2}} \\\\[-0.35em] ~\dotfill\\\\ ||v||~~ - ~~||w||\implies \sqrt{5^2+(-7)^2}~~ - ~~\sqrt{3^2 + 2^2}\implies \sqrt{74}-\sqrt{13} ~~ \approx ~~ 5$

You might be interested in

Which expression is equivalent to 5(2x +10)

dimulka [17.4K]

Answer:(5 + x)(2x + 10)

Step-by-step explanation:

Im pretty sure its that

3 0

3 years ago

I need help in number 3

Mkey [24]

The change in temperature would be negative.

Explanation: -10 - (-2) = (-8)

8 0

3 years ago

Which of the following illustrates a phase shift?

Natasha_Volkova [10]

Answer:

A. y = -2 - cos(x-π)

Explanation:

The general form of the trig equation is:

y = A sin (Bx + C) + D

where:

A is the amplitude

$\frac{2\pi}{B}$ is the period

$\frac{-C}{B}$ is the phase shift

D is the vertical shift

Now, let's check the choices:

A. y = -2 - cos(x-π)

$\frac{-C}{B} = \frac{\pi}{1} = \pi$

Therefore, the function has a phase shift of π

B. y = 3 cos(4x)

$\frac{-C}{B} = \frac{0}{4} = 0$

Therefore, the function has no phase shift

C. y = tan(2x)

$\frac{-C}{B} = \frac{0}{2} = 0$

Therefore, the function has no phase shift

D. y = 1 + sin(x)

$\frac{-C}{B} = \frac{0}{1} = 0$

Therefore, the function has no phase shift

Based on the above, the correct answer is A

Hope this helps :)

3 0

3 years ago

Read 2 more answers

Y=-2x+9 answer to this question

rewona [7]

Answer:

5.5

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Explain what the slope and intercept mean in the situation.

Vera_Pavlovna [14]

Answer: The slope is the cost per muffin and the intercept of 3 is the delivery charge.

Step-by-step explanation:

I will assume that the graph has total cost in dollars for the y axis and number of muffins on the x axis. A slope of 2 means that y will increase by 2 for every 1 increase in x. That means that the price of a single muffin is $2.

The intercept of 3 at x = 0, means that there is an upfront (delivery) charge of $3. One muffin would cost $2 for the muffin plus $3 for the delivery, for a total of $5.

10 muffins would cost $20 for the muffins plus $3 for the delivery, for a total of $23.

5 0

3 years ago