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just olya [345]
3 years ago
15

Help..!!!!!__________________________

Mathematics
2 answers:
Marta_Voda [28]3 years ago
8 0

Answer:

The answer to this question is 136

wolverine [178]3 years ago
3 0

Answer:

Where exactly is <T?

Step-by-step explanation:

Either way I will say it's 66 degrees or cannot be determined. Either of those

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Let u = (1, 2 -2), v= (2, 1, 3) and w = j + 4k. a) Find cos theta, where theta is the angle in degrees between u and w.
vodka [1.7K]

Answer: The value of cos theta is -0.352.

Step-by-step explanation:

Since we have given that

\vec{u}=1\hat{i}+2\hat{j}-2\hat{k}\and\\\\\vec{w}=\hat{j}+4\hat{k}

We need to find the cos theta between u and w.

As we know the formula for angle between two vectors.

\cos\ \theta=\dfrac{\vec{u}.\vec{w}}{\mid u\mid \mid w\mid}

So, it becomes,

\cos \theta=\dfrac{2-8}{\sqrt{1^2+2^2+(-2)^2}\sqrt{1^2+4^2}}\\\\\cos \theta=\dfrac{-6}{\sqrt{17}\sqrt{17}}=\dfrac{-6}{17}=-0.352\\\\\theta=\cos^{-1}(\dfrac{-6}{17})=110.66^\circ

Hence, the value of cos theta is -0.352.

8 0
3 years ago
The sum of two rational number is minus 4 by know if one of them is 13 by 6 them find the other ​
attashe74 [19]

Answer:

the sum of two rational number is minus 4 by know if one of them is 13 by 6 them find the other ​

Step-by-step explanation:

let the second rational no. be x

then a/q,

13/6 + x = -4/9

x = -4/9 - 13/6

x = (-16 - 78)/36

x = - 94/36 or -47/18

x = -2.61111

5 0
4 years ago
HELP ASAP 50 POINTS
serg [7]
<h3>Part A</h3>

<u>Factoring the area:</u>

  • 4x² + 20x + 25 =
  • (2x)² + 2*2x*5 + 5² =
  • (2x + 5)²

<u>The length of the side is:</u>

  • √(2x + 5)² =
  • 2x + 5
<h3>Part 2</h3>

<u>Factoring the area:</u>

  • 4x² − 9y²=
  • (2x)² - (3y)² =
  • (2x + 3y)(2x - 3y)

<u>The sides of the rectangle are:</u>

  • 2x + 3y and 2x - 3y
7 0
3 years ago
Please help will mark Brainly .
vitfil [10]

Answer:

b. $2

Step-by-step explanation:

It says "starts at $2" which is the initial value.

6 0
4 years ago
Read 2 more answers
Two integers a and b, have a product of 24. What's the least they can be?
xxTIMURxx [149]
Well think, 24= 8x4  right? So, 2 can go into 24 which=12 so lets divide.
24÷2= 12
12÷2=6
6÷2=3
3 is the smallest we can get so can 3 go into 24? yes, so 8 times 
so the smallest they can be are 8*3 and you cant reduce 8 anymore because of the three once one gets the smallest they both do. hope this helped.
8 0
4 years ago
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