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coldgirl [10]
3 years ago
6

Multiply (2 − 7i)(9 + 5i). A) 53-53i B) -17-53i C) 18-35i^2 D) 18-53i-36i^2

Mathematics
1 answer:
kenny6666 [7]3 years ago
3 0
(2-7i) (9+5i)

18+10i-63i-35i^2

i^2= -1 so -35*-1= 35

35+18= 53

-63i+10i= -53I

answer is 53-53i
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statuscvo [17]
5/3

= 1 2/3 or 1.667

Hope this helps!
5 0
3 years ago
A price of a car is 15400 before it is reduce by 8% <br> how much does it cost after the reduction
Marysya12 [62]

Answer:

14,168

Step-by-step explanation:

15400

Find 1% and times it by 8

Take away 8% from 15400

15400-1232=14168

5 0
3 years ago
Read 2 more answers
I am really confused about this question for math.. any help would be really appreciated:
Elina [12.6K]

y= (\frac 1 4 )^x

A reflection about the x axis, about y=0, is the mapping (x',y')=(x,-y) so

y'= -y = - (\frac 1 4)^{x'}

A dilation of 2 is the mapping (x'',y'')=(2x', 2y')

So

x'=x''/2, y'=y''/2

y''/2= - (\frac 1 4)^{x''/2}

y'' =  - 2((\frac 1 4)^{1/2})^{x''}

y''= - 2(\frac 1 2)^{x''}

We can rewrite that without the primes and combine the powers of 2.

y =  - 2^{1-x}

Let's graph these and see if we're close,

Plot y= (1/4)^x, y= - (1/4)^{x}, y = - 2^{1-x}

6 0
3 years ago
What is 4x(12x6-4^2)+9
krok68 [10]

Answer:

48x⁷ - 64x + 9

Step-by-step explanation:

Step 1: Write out expression

4x(12x⁶ - 4²) + 9

Step 2: Evaluate exponent

4x(12x⁶ - 16) + 9

Step 3: Distribute

48x⁷ - 64x + 9

8 0
3 years ago
Read 2 more answers
Whats A and B <br> How do i solve this ?
Aleonysh [2.5K]

Answer:

\begin{pmatrix}-2\\-4\end{pmatrix}

Step-by-step explanation:

The question is, how many x and y steps do I have to move the P picture to get it in the Q position. The answer is 2 to the left, so -2, and 4 down, so -4.

4 0
2 years ago
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