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3 years ago

PLS help, trig homework- will offer brainliest :)

Mathematics

1 answer:

kotegsom [21]3 years ago

6 0

Step-by-step explanation:

-2u = 2i + 10j

V = 4i - 6j

(-2u).V = (2x4) - (10x-6)

= 8 - (-60)

= 68

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I just need help with this problem. Show work if possible. Thanks!

Andrew [12]

Answer:

${:}\longrightarrow$ $\sf 2x^3+20x^2+2ax^2+20ax$

${:}\longrightarrow$ $\sf 2x^2 (x+10)+2ax (x+10)$

${:}\longrightarrow$ $\sf (x+10)2x^2+2ax$

${:}\longrightarrow$ $\sf (x+10)2x (x+a)$

${:}\longrightarrow$ $\sf 2x (x+a)(x+10)$

4 0

3 years ago

Lmc and gfc of 3,5 and 6

Sholpan [36]

Answer:

Lcm is 30 and gcf is 1

Step-by-step explanation:

Trust me

6 0

3 years ago

Read 2 more answers

Help with this question, ASAP PLEASE!! SHOW YOUR WORK!!

r-ruslan [8.4K]

Simplest polynomial function is $x^4-x^3-11x^2+9x+18.$

Solution:

Given data:

Zeroes are 3i, –1, 2.

3i is a complex root of the function.

If 3i is a zero of the polynomial then –3i is also a zero of the polynomial.

Therefore zeroes are 3i, –3i –1, 2.

By factor theorem,

If a is zero of the function, then (x – a) is a factor of the polynomial.

So, the factors are (x – 3i), (x + 3i), (x + 1), (x –2).

On multiplying the factors, we get the polynomial.

$(x - 3i) (x + 3i) (x + 1) (x -2)$

$=(x^2+3ix-3ix+(3i)^2)(x^2-2x+x-2)$

$=(x^2-9)(x^2-x-2)$

Since the value of $i^2=-1$

$=x^2(x^2-x-2)-9(x^2-x-2)$

$=x^4-x^3-2x^2-9x^2+9x+18$

$=x^4-x^3-11x^2+9x+18$

Simplest polynomial function is $x^4-x^3-11x^2+9x+18.$

5 0

3 years ago

Bruce is solving a system of equations.

Valentin [98]

Answer:

Option 3,4,5 are correct.

Step-by-step explanation:

The system of equations are:

$3x+5y=9\,\,\,\,(1)\\x-y=-5\,\,\,\,(2)$

Multiply equation (2) with -3 and add with equation (1)

$3x+5y=9\\-3x+3y=15\\-------\\8y=24\\y= 24/8\\y=3$

Value of y is 3

Putting value of y in eq(2)

$x-y=-5\\x-3=-5\\x=-5+3\\x=-2$

Value of x is -2

So, Option 3,4,5 are correct.

Keywords: System of Equations

Learn more about System of Equations at:

#learnwithBrainly

7 0

3 years ago

4-2(3+2)<br> 2<br> How do you do this help me

Nataly_w [17]

Answer:

Step-by-step explanation:

$4 - 2(3 + 2) ^{2} \\ 4 - 2( {5}^{2} ) \\ 4 - 2(25) \\ 4 - 50 = - 46$

6 0

4 years ago