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Elis [28]
3 years ago
7

What is the simplified form of i^3 O A. 1 O B.-i O c. i O D. -1

Mathematics
2 answers:
tatiyna3 years ago
6 0
The answer would be -I and corresponds to letter b
Anvisha [2.4K]3 years ago
4 0

Answer:

B

Step-by-step explanation:

B because i² makes +1 and i=-1

so i³=-i

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65 POINTS!!! The price of an Ipad is $499. It is on sale for 18% off at the Apple Store on Mac Monday's. Find the Sales price yo
sineoko [7]

Answer:

The student added the discount instead of subtracting the discount.

They also did not calculate the tax correctly.

Step-by-step explanation:

Original price is 499

Discount = original price * percent off

Discount = 499 * .18

               =89.82

The sale price = original price minus the discount

sale price = 499-89.82

sale price = 409.18

Sales tax = sale price * tax rate

                = 409.18 * 8.875%

                =409.18*.08875

                 =36.314725

Rounding to the nearest cent

                     36.31

Final cost = sale price + sales tax

                  =409.18+36.31

                   445.49

The student added the discount instead of subtracting the discount.

They also did not calculate the tax correctly.

6 0
3 years ago
Solve the equation <br>r ÷ (-8) =5​
krok68 [10]

Answer:

r=-40

Step-by-step explanation:

r/-8=5

times -8 on both sides

5 times -8 =-40

r=-40

8 0
3 years ago
Read 2 more answers
What is the sum of 1/9, 2/3,and 5/18? A.19/18 B.8/30 C.4/15 D.12/9
amm1812
1/9 times 2/2=2/18
2/3 times 6/6=12/18

2/18+12/18+5/18=(2+12+5)/18=19/18=1 and 1/8


A is answer
8 0
3 years ago
Eliza started her savings account with $100. Each month she deposits $25 into her account. Determine the average rate of change
Afina-wow [57]
First, lets create a equation for our situation. Let x be the months. We know four our problem that <span>Eliza started her savings account with $100, and each month she deposits $25 into her account. We can use that information to create a model as follows:
</span>f(x)=25x+100
<span>
We want to find the average value of that function </span>from the 2nd month to the 10th month, so its average value in the interval [2,10]. Remember that the formula for finding the average of a function over an interval is: \frac{f(x_{2})-f(x_{1})}{x_{2}-x_{1} }. So lets replace the values in our formula to find the average of our function:
\frac{25(10)+100-[25(2)+100]}{10-2}
\frac{350-150}{8}
\frac{200}{8}
25

We can conclude that <span>the average rate of change in Eliza's account from the 2nd month to the 10th month is $25.</span>
6 0
3 years ago
In parallelogram ABCD, the measure of angle ABC is 130, find the measure, in degrees of angle DAB
77julia77 [94]
Angle ABC = 130
Angle ABC = Angle ADC = 130 (Opposite angles are equal)
Angle DAB = 180 - 130 = 50 (consecutive interior angles)

I HOPE IT IS HELPFUL:D
6 0
3 years ago
Read 2 more answers
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