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3 years ago

What property of addition is shown in the equation a + bi + 0 + 0i = a + bi?.

1 answer:

8 0

First, the value of i multiplied by 0 is 0. The left hand side of the equation then becomes a + bi + 0 + 0. The right hand side, a + bi, shows the cancellation of 0 which means that the addition property used is Zero Property.

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Factor Completely<br>24+27v

tresset_1 [31]

Message me if i’m wrong i will try to fix my mistake <3

6 0

3 years ago

Sales tax is 6%. Bought car for$820 what was cost of car

pogonyaev

820 + .06(820)
820 + 49.2
869.2
The cost of the car is $869.20.

8 0

4 years ago

Read 2 more answers

Rob peeled 125 oranges in 5 hours. At that rate, how many oranges<br> would he peel in 12 minutes?

marin [14]

Answer:

$\boxed {\tt 5 \ oranges}$

Step-by-step explanation:

Let's set up a proportion.

$\frac{oranges}{minutes} =\frac{oranges}{minutes}$

He can peel 125 oranges in 5 hours. First, let's find the minutes in 5 hours.

There are 60 minutes in 1 hour, so multiply 60 and 5 (60*5=300). There are 300 minutes in 5 hours.

$\frac{125 \ oranges}{300 \ minutes}=\frac{oranges}{minutes}$

We don't know how many oranges he can peel in 12 minutes. So we say he can peel x oranges in 12 minutes.

$\frac{125 \ oranges}{300 \ minutes}=\frac{x \ oranges}{12 \ minutes}$

$\frac{125 \ }{300 \ }=\frac{x \ }{12 }$

Solve for x by isolating it. x is being divided by 12. The inverse of division is multiplication. Multiply both sides of the proportion by 12.

$12*\frac{125 \ }{300 \ }=\frac{x \ }{12 \ }*12$

$12*\frac{125 \ }{300 \ }=x$

$12*0.416666667=x$

$5=x$

Rob can peel 5 oranges in 12 minutes.

6 0

4 years ago

Read 2 more answers

Please help!!!!!!!!!!

blsea [12.9K]

Answer:

Step-by-step explanation:

a) x = 1.786 & -1.120

Explanation:

Turning points are points where the derivative equals zero. Solving the derivative for the values of X will give the answer to part a.

The derivative of this equation $x^3 =x^2-6x[/t[tex] is [tex]3x^2+2x-6$ .

Solving the equation $3x^2+2x-6=0$ using the quadratic formula we get 1.786 & -1.120

b) x = -3, x=0 and x=2

Explanation:

The solution to this equation are the points where the graph intersects with the x axis. Looking at the graph we can see that these points are -3 , 0 and 2

3 0

3 years ago

Read 2 more answers

Can you please help me evaluate this problems

Fofino [41]

Answer:

16. 137

17. 89

18. 168

19. 50

20. 8

21. 96

22. 39

23. 5

24. -2

25. 7

Step-by-step explanation:

We have to follow BODMAS which is the acronym for Bracket, Of, Division, Multiplication and Subtraction.

We have to perform our calculations in this order. i.e., Solve the calculations in a bracket first then of and so on.

a = 12; b = 9; c = 4

16. a² + b - c² = (12)² + 9 - 4² = 144 + 9 - 16 = 153 - 16 = 137

17. b² + 2a - c² = 81 + 2(12) - 16 = 81 + 24 - 16 = 105 - 16 = 89

18. 2c(a + b) = 2 · 4 (12 + 9) = 8(21) = 168

19. 4a + 2b - c² = 4(12) + 2(9) - 4² = (48 + 18 - 16 = 66 - 16 = 50

20. [a² ÷ (4b)] + c = [12² ÷ 4(9)] + 4 = [144 ÷ 36] + 4 = 4 + 4 = 8

21. c²(2b - a) = 4²(2(9) - 12) = 4²(18 - 12) = 16(6) = 96

22. [bc² + a] ÷ c = [9(4²) + 12] ÷ 4 = [9(16) + 12] ÷ 4 = 156 ÷ 4 = 39

23. [2c³ - ab] ÷ 4 = [2(4)³ - 12(9)] ÷ 4 = [2(64) - 108] ÷ 4

= [128 - 108] ÷ 4 = 20 ÷ 4 = 5

24. 2(a - b)² - 5c = 2(12 - 9)² - 5(4) = 2(3)² - 20 = 18 - 20 = -2

25. [b² - 2c²] ÷ [a + c - b]

= [9² - 2(4)²] ÷ [12 + 4 - 9] = [81 - 32] ÷ [16 - 9]

= 49 ÷ 7 = 7

8 0

4 years ago