MATHEMATICS COLLEGE

Dunno these answers

Answers

Answer 1

Answer:

Answer:

c. 9i.

Step-by-step explanation:

$√(-81)$

= $√(-1 * 9 * 9)$

= $√(-1 * 9^2)$

= $9√(-1)$

The square root of -1 is the same thing as i.

= $9i$

So, your answer is C.

Hope this helps!

Answer 2

Answer:

Answer:

its 9

Step-by-step explanation:

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Julie started solving the equation 3x=4+2(3-x)
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Solve for the given variable: 4. 24 - 9x = -3x

5. 4(5x + 2) + 11 = 18x + 3

6. 3x - 8x = -27 – 13

Show Your Work

Answers

Answer:

4. x=4

5. x=-8

6. x=8

Step-by-step explanation:

It may take one extra step to get to the solution, but this method always works.

1. find the variable term that is smallest or most negative. Subtract all the terms on that side of the equation from both sides of the equation.

2. collect terms

3. divide the equation by the coefficient of the variable

4. add the opposite of the constant

___

4. The most negative variable term is -9x, which is on the left side. Subtracting (24-9x) from both sides of the equation, we have ...

0 = -3x -24 +9x

0 = -24 +6x

0 = -4 +x . . . . . divide by 6

4 = x . . . . . . . . add the opposite of -4

5. The smallest variable term is 18x, on the right. (The variable term on the left is 20x.)

4(5x +2) +11 -18x -3 = 0 . . . subtract the right side

2x +16 = 0 . . . collect terms

x +8 = 0 . . . . . . divide by 2

x = -8 . . . . . . . . add -8

6. All variables are on the left side, so we can just collect terms and divide by the coefficient of the variable.

-5x = -40 . . . collect terms

x = 8 . . . . . divide by -5

If you were to literally follow the steps above, you would recognize that -5x is less than 0x (the x-term on the right side of the equation), so you would subtract the left side, giving ...

0 = 5x -40

0 = x -8 . . . . . divide by 5

8 = x . . . . . . . . add 8

_____

Comment on this solution technique

You will often be told to solve these equations by separating the variable terms from the constant terms. This method actually puts the variable terms and constant terms together (and zero on the other side of the equal sign). The constant is separated from the variable as the last step of this solution process, rather than as one of the first steps. By doing this, we don't have to worry about which variable term or which constant term we're going to mess with.

The only reason for choosing the variable term with the smallest (least) coefficient in the first step is to ensure that the resulting variable coefficient is positive. This tends to reduce errors later on. You can also use that same strategy when solving the equation following the "separate constant terms and variable terms" approach.

A system of equations is shown. y = 3x - 2;. y = x^2. What are the solutions to the system of equations?

Answers

Answer:

(1,1) and (2,4) are the solutions to the system of equations.

Step-by-step explanation:

The two equations are:

$y=x^(2)$ ---------1

$y=3x-2$ ---------2

Putting value of y from equation 1 in equation 2 we get:

$x^(2)=3x-2\nx^(2)-3x+2=0\nFactorising\nx^(2)-x-2x+2=0\nx(x-1)-2(x-1)=0\n(x-1)(x-2)=0\nx=1,x=2$

When x=1 : $y=x^(2)=1$

When x=2 $y=x^(2) =4$

The solutions are (1,1) and (2,4).

Answer: the solutions to the system of equations are x = 2 and x = 1

Step-by-step explanation:

The system of equations given equation is

y = 3x - 2 - - - - - - - - - - 1

y = x^2 - - - - - - - - - - - - 2

Substituting 1 into equation 2, it becomes

x^2 = 3x - 2

x^2 - 3x + 2 = 0

We would apply the method of factorization in solving the equation. We will get two numbers such that when added, the result would be - 3x and when multiplied, the result would be 2x^2. The numbers are - 2x and - x. It becomes

x^2 - 2x - x + 2 = 0

x(x - 2) - 1(x - 2) = 0

(x - 2)(x - 1) = 0

x - 2 = 0 or x - 1 = 0

x = 2 or x = 1

Which choice is equivalent to the product below?Vovino
O A. 4,/25
B. 2V50
O C. 5,2
O D. 10
SUBMIT

Answers

$√(2) . √(10) . √(5) \n = √(2 * 10 * 5) \n = √(100) \n = 10$

Answer:

D.10

Hope you could get an idea from here.

Doubt clarification - use comment section.

10

2*10*5= 100
Square root of 100 is 10

Four times the quotient of 3 and 4

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

The quotient of 3 and 4 is 0.75.

3/4 = 0.75

0.75 x 4 = 3...

So the answer is 3.

CAN SOMEONE PLEASE HELP ME IVE ASKED MORE THAN 20 TIMES. A wildlife society is taking a sampling of the lengths of bluegill fish at a local lake.

If the survey resulted in the data above, the distribution of fish lengths would be best described as...
A.
symmetrical with multiple modes.
B.
symmetrical with one mode.
C.
skewed to the right.
D.
skewed to the left.

Answers

Answer:

I’m thinking skewed to the right

Answer:

I think it is D but not totally sure.

And i am sorry you had to ask so many times, i hope D was the correct answer.

Also this talks about skewed images:

Factor x3 ‒ 11x2 ‒ 7x + 77 by grouping. What is the resulting expression?a

(x2 ‒ 7)(x ‒ 11)

b

(x2 ‒ 7)(x + 11)

c

(x2 ‒ 11)(x + 7)

d

(x2 ‒ 11)(x ‒ 7)

Answers

Answer:

A. $(x^(2)-7)\cdot (x-11)$

Step-by-step explanation:

The third order polynomial is factored herein:

$x^(2)\cdot (x-11) - 7\cdot (x-11)$

$(x^(2)-7)\cdot (x-11)$

Which represents answer A.

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