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dusya [7]
3 years ago
13

Define the points ​P(negative 4−4​,negative 2−2​) and ​Q(33​,negative 4−4​). Carry out the following calculation. Find two vecto

rs parallel to ModifyingAbove QP with right arrowQP with length 22.
Mathematics
1 answer:
slega [8]3 years ago
8 0

Answer:

The required vectors are u= and v=.

Step-by-step explanation:

Given information: P(-4,-2) and Q(3,-4).

We need to find the two vectors parallel to \overrightarrow {QP} with length 2.

If A(x_1,y_1) and B(x_2,y_2), then

\overrightarrow {AB}=

|\overrightarrow {AB}|=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Using the above formula we get

vector QP is,

\overrightarrow {QP}==

Magnitude of vertor QP is,

|\overrightarrow {QP}|=\sqrt{(-4-3)^2+(-2-(-4))^2}

|\overrightarrow {QP}|=\sqrt{(-7)^2+(2)^2}

|\overrightarrow {QP}|=\sqrt{49+4}

|\overrightarrow {QP}|=\sqrt{53}

Using vector is

\widehat {QP}=\frac{\overline {QP}}{|\overline {QP}|}

\widehat {QP}=\frac{1}{\sqrt{53}}

w=\widehat {QP}=\frac{1}{\sqrt{53}}

Multiply vector w by 2 to get a parallel vector parallel of QP in same direction.

u=2w=

Multiply vector w by -2 to get a parallel vector parallel of QP in opposite direction.

v=-2w=

Therefore the required vectors are u= and v=.

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2 years ago
ebony wants to buy a dvd player and dvds the equation relates the total cost for dvds and dvd player and N dvds is p=20n+200 wha
kupik [55]

____________________________________________________

Answer:

It represents the cost of the DVD player.

____________________________________________________

Step-by-step explanation:

The reason why it represents the cost of the DVD player is because in the question, it doesn't mention anything about buying multiple DVD players. Ebony would need to buy many DVD's, but doesn't need many DVD players because ebony could use one for all of the DVD's. If you noticed in the question, it says "a DVD player," what  this means is that Ebony is only going to buy one DVD player, since it's singular (without and s at the end).

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3 0
3 years ago
Im very young and need help whats 2+2
Fynjy0 [20]

Answer:

4

Step-by-step explanation:

if you had 2 monkeys and another 2 monkeys and you put them in a pen together then you will have 4 monkeys in the pen

hope this helps :))

7 0
3 years ago
Read 2 more answers
Hi! ❤️ , im looking for some help here. ill give brainliest if able to.
Alexeev081 [22]

Answer:

A. 2^11

Step-by-step explanation:

(They are basically asking what's 2^4 × 2^7, but with more words.)

I usually do each exponent individually:

2^4 is the same as 2 × 2 × 2 × 2 = 16 (or you could have read the text to figure that out)

2^7 is the same as 2 × 2 × 2 × 2 × 2 × 2 × 2 = 128

Then just multiply 128 and 16 to get 2,048, and see which option also gives you 2,048.

BUT, you can also:

(Combine the exponents together to get your answer. Just remember that if it's multiplication you add them, and if it's division you subtract them.)

2^4 × 2^7

4 + 7 = 11

2^11 (This equals 2,048 btw. You don't even have to check all the options to get the answer).

Hope this helps friend :)

The last part I learned from another user, while answering one of your other questions. I personally find this mind blowing, lol.

4 0
2 years ago
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