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3 years ago

NEED ASAP!!!

Mathematics

2 answers:

Alchen [17]3 years ago

8 0

Answer:

uh b

Step-by-step explanation:

Hatshy [7]3 years ago

8 0

B i think ?? (needs 20 letters shshshhshaheueje

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Given the vectors u= <2, 1> and v= <5, 4>, determine the components of a vector represented by 2u - 3v

kati45 [8]

Answer:

C.) <-11, -10>

Step-by-step explanation:

Let's define how to work with vectors.

For two vectors:

V = <a, b>

W = <c, d>

The product of a scalar k and a vector is given by:

k*V = k*<a, b> = <k*a, k*b>

And the sum (or difference) of two vectors is given by:

V ± W = <a, b> ± <c, d> = <a ± c, b ± d>

Now that we know this, we can solve the problem.

Here we have the vectors:

u = <2, 1>

v = <5, 4>

then:

2u - 3*v = 2*<2, 1> - 3*<5, 4>

= <2*2, 2*1> - <3*5, 3*4>

= <4, 2> - <15, 12>

= <4 - 15, 2 - 12>

= < -11, -10>

Then the correct option is C.

5 0

2 years ago

Sin^22x - 2cos2x + 2=0

zhuklara [117]

Answer:

x=πn, n∈Z

Step-by-step explanation:

if sin²2x=1-cos²2x, then

1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;

$\left[\begin{array}{cc}cos2x+3=0\\cos2x-1=0\\\end{array} \ \ \left[\begin{array}{cc}x \ 'does-not-exist'\\cos2x=1\\\end{array} \ \ 2x=2\pi n, n=Z \ x=\pi n, n=Z$

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2 years ago

If a die is rolled one time find these probabilities of getting a 2

lapo4ka [179]

1/6
the die has six sides 1,2,3,4,5,6
to get 2, you have one chance from 6
you get
1/6

8 0

3 years ago

How do u figure -11/4+1/2

worty [1.4K]

Answer:

-2 1/4 or -9/4, depending if the question says simplified or not.

Step-by-step explanation:

-11/4 + 1/2

-11/4 + 2/4=-9/4

-9/4= -2 1/4

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3 years ago

Six years less than Tracy's age write it as a algebratic expression

docker41 [41]

the answer would for the equation would beT-6 or 6-T

3 0

2 years ago

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