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miv72 [106K]
3 years ago
12

HELP PLS ! ! ! What is |1 − 8i|? A) √-65 B) 65 C) √65 D) √13

Mathematics
2 answers:
garik1379 [7]3 years ago
6 0
I’m pretty sure it’s C
Usimov [2.4K]3 years ago
3 0

Answer:

C) SQRT(65)

Step-by-step explanation:

the magnitude of 1-8i is given by the following:

sqrt(a^2+b^2)  

sqrt(1^2+8^2)

=sqrt(1+64)

=sqrt(65)

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Andreyy89

Answer:

\large\boxed{y=\dfrac{1}{2}x}

Step-by-step explanation:

\text{Let}\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\l\ \parallel\ k\iff m_1=m_2\\\\===============================

\text{We have the equation:}\ y=-2x+4\to m_1=-2.\\\\\text{Therefore}\ m_2=-\dfrac{1}{-2}=\dfrac{1}{2}.\\\\\text{We have the equation:}\ y=\dfrac{1}{2}x+b.\\\\\text{Put the coordinate of the point (4, 2) to the equation:}\\\\2=\dfrac{1}{2}(4)+b\\\\2=2+b\qquad\text{subtract 2 from both sides}\\\\0=b\to b=0.\\\\\text{Finally:}\\\\y=\dfrac{1}{2}x

8 0
3 years ago
Find the intercepts for the graph of the equation given.<br>X +7y=0<br>​
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They are both (0,0)

The x intercept is when y is equal to zero.

VICE VERSA

x + 7(0) = 0

(0) + 7y = 0

<em>Hope this helps!!!</em>

8 0
3 years ago
The Lee family buys a new car that has a sales price of $35,000. If the car dealer requires a minimum down payment of 15%, what
Ivanshal [37]
<h2><u><em>PLEASE MARK ME BRAINLIEST!!!!!</em></u></h2>

Answer:

$5,250

Step-by-step explanation:

The less must pay a minimum down payment that is equivalent to 15% the sales price of the new car.

Given that the price of the new car is $35,000, the product of 15% with this amount will equal the down payment.

As such, the down payment

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3 years ago
There is a bag filled with 3 blue and 4 red marbles. A marble is taken at random from the bag, the colour is noted and then it i
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altogether there are 7 marbles in the bag.

put the marbles in fractions, so blue would be 3/7

and red would be 4/7. but becuase you need 2 of the same, you do

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then add them togther

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if you need it as a percentage, it is

51.020408163265%

8 0
3 years ago
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