MATHEMATICS HIGH SCHOOL

12.the square root of the negative of negative 9 squared = ?(Note: i = the square root of negative 1 )

Answers

Answer 1
Answer:

The squareroot of a negative number is notdefined in the realm of real numbers.

We have,

The squareroot of a negative number is not defined in the realm of real numbers.

The square root function is only defined for non-negative real numbers.

In this case, the expression "negative 9 squared" means the square of negative 9, which is positive 81.

However, taking the square root of the negative of positive 81 would involve imaginary numbers.

If we consider the square root of -81 in the realm of complex numbers, it can be represented as ±9i, where i is the imaginary unit (√-1).

Thus,

The squareroot of a negative number is not defined in the realm of real numbers.

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Answer 2
Answer: Since the negative 9 is squared, you would get 81. So you would have the square root of a negative 81. Therefore you would have the square root of negative one (i) times the square root of 81 (9). So, the answer is 9i.

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Line A has a slope of 6/10 and a line B has a slope of 3/5 are both lines parallel?

Solve the equation for y.

4x – 5y = 9

Answers

The equation of y for that expression would be y = (-4x+9)/-5.

What is the expanded expression form that is equivalent to 3(x + 3y)?

Answers

Answer:

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3(x + 3y) \n = 3x + 9y

꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐

What is the expanded expression form that is equivalent to 3(x+3y) ?

It is = 3x+9y

Mike went to the store to buy shirts. The shirts were $45 each. The store was offering the following discount Mike decided to buy 3 shirts. Not including sales tax, how much money did Mike save by buying the shirts at the discounted price?

Answers

Mike saves $36 by buying the shirts at a discounted price.

What is the percentage?

The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.

The percentage is also called the indicating hundredths. Thus, 2% is two-hundredth, which means 2%=2/100=0.02.

Given the offer,

By 1 at regular price ($45) and get 40% off on two shirt

40 % of 45 ⇒ 0.40 × 45 = $18

So shirt price = 45 - 18 = $27/each

Since 2 shirt buy at this price = 2 × 27 = $54

Money saved = 2×45 - 54 = $36

Hence "Mike saves $36 by buying the shirts at a discounted price".

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Given question is incomplete complete question is ;

Answer:

54

Step-by-step explanation:

Tim mows neighborhood lawns for extra money. Suppose that he would be willing to mow one lawn for ​$12​, a second lawn for ​$16​, and a third lawn for ​$22. Also suppose that three neighbors are interested in having their lawns mowed. Mrs. Jones would be willing to pay ​$35 to have her lawn​ mowed, Mr. Wilson would be willing to pay ​$27​, and Ms. Smith would be willing to pay ​$22.

Answers

And it is 4,192thats is what my bro said

Solving need help in don't get it

Answers

√(3x-5)-2=0
add 2 to both sides
√(3x-5)=2
square both sides
3x-5=4
add 5 to both sides
3x=9
divide 3
x=3

a nswer is B

A bowl contains 8 blue marbles and 5 green marbles. Elizabeth randomly draws 4 marbles form the bowl. she does not replace the marbles after each draw. what is the probability that she draws 1 blue marble and 3 green marbles?A. 4/13
B. 13/143
C. 4/143
D. 16/143

Answers

since she puts the marbles back, these events are dependent on each other
so
probability=(desired outcomes)/(total possilbe)
8+5=13=total
probailigy of blue=8/13
gree=5/13
so if she draws theem in that order then
8/13 times (since there is one less, -1 of 13) 5/12 times (assume 1 grreen was drawn from previus drawing) 4/11 times (assume as previus) 3/10


so
8/13 times 5/12 times 4/11 times 3/10=4/143=C

the answer is C 4/143
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