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Mashutka [201]
3 years ago
6

What is the value of the expression iºxi1 x 2 x 3 xi4? a) 1 b) -1 c) i d) -i

Mathematics
1 answer:
tangare [24]3 years ago
6 0

Answer:

Option b.

Step-by-step explanation:

Note: The given expression is not in correct form. Consider the given expression is i^0\times i^1\times i^2\times i^3\times i^4.

Let as consider the given expression is  

i^0\times i^1\times i^2\times i^3\times i^4

We know that,

i^0=1,i^2=-1,i^3=-i,i^4=1

Using these values, we get

i^0\times i^1\times i^2\times i^3\times i^4=1\times i\times (-1)\times (-i)\times 1

=i^2

=-1

The value of given expression is -1.

Therefore, the correct option is b.

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Mr.Roshan will buy 12 1/2 pounds Beef for a cookout.The price for the first 3 pounds of beef is $4.99 per pound. After that,The
vagabundo [1.1K]

Answer:

  $57.63

Step-by-step explanation:

For x > 3, the price in dollars Mr. Roshan will pay for x pounds of beef is ...

  cost = 4.99×3 +4.49(x -3) = 3(4.99 -4.49) +4.49x

  cost = 1.50 +4.49x

Then for x = 12.5 pounds, the cost is ...

  cost = 1.50 +4.49×12.5 = 1.50 +56.13

  cost = 57.63

Mr. Roshan will pay $57.63 for 12.5 pounds of beef.

5 0
3 years ago
Use the substitution method to solve each linear system. 4x - 3y = -13,-2x + y = 4
Contact [7]

Answer:

The solutions to the system of equations are:

x=\frac{1}{2},\:y=5

Step-by-step explanation:

Given the system of the equations

\begin{bmatrix}4x-3y=-13\\ -2x+y=4\end{bmatrix}

Isolate x for for 4x-3y=-13

4x-3y=-13

4x=-13+3y

Divide both sides by 4

x=\frac{-13+3y}{4}

substitute y=5

x=\frac{-13+3\cdot \:5}{4}

x=\frac{1}{2}

The solutions to the system of equations are:

x=\frac{1}{2},\:y=5

8 0
3 years ago
2 geometry questions.. will mark brainliest
Andru [333]
Answer to one im pretty sure is 136.4 degrees and to number 2 is a parallelogram (rectangle or square) you know because the side AD is equal to BC and AB is equal to DC
3 0
3 years ago
Graham recruited student volunteers to participate in his dissertation study. He set up several times for students to come to a
mart [117]

Answer:

Sampling bias

Step-by-step explanation:

Bias refers a prominent problem in statistical analysis whereby one or more analytical factor are favored than the other during an analysis which should be made random. The problem. With Graham's dissertation study is the fact that he failed to randomlyvplace his subjects or observation in the study groups, favoring a particular group with non random subset. When randomization is ejected or missing from an analysis or study, it becomes less and less representative. Here, allotting early Arrivals Into the treatment group has introduced a sampling bias as those who came later, this will also leads to less reproducibility of experiment.

6 0
3 years ago
HELPPP!!! WILL MARK BRAINLIEST!!!
LenKa [72]

Answer:

Horizontal Asymptote:    y=2

Vertical Asymptote: x=3

Step-by-step explanation:

One way: Look at graph

Look at for a horizontal or vertical line that both lines don't touch.

Second Way:

When you look for vertical asymptotes, you set the denominator equal to zero and solve.

For example, the second question has a denominator of x-3.

x-3=0

x=3 (This is the vertical asymptote)

When you look for horizontal asymptote, you do long division.

For example, the first question f(x)=\frac{2x}{x-3}

The answer will be 2. 2 is the quotient. You only want quotient not remainder.

y=2.

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3 years ago
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