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natta225 [31]
3 years ago
8

Given a circle in the complex plane with a diameter that has endpoints at: -12 − i and 18 + 15i Find the center of the circle. +

i
Mathematics
2 answers:
Fittoniya [83]3 years ago
8 0

Answer:

3+7i :) on edge nuity haha uh cool

azamat3 years ago
4 0

Answer: The center of the circle is 3+7i

Explanation: Let z1 and z1 be the two end points and c be the center to be determined. The center lies half of the difference between z1 and z1, measured from z1:

z_1=-12-i\\z_2=18+15i\\c=z_1+\frac{z_2-z_1}{2}=-12-i +15+8i=3+7i

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6th grade math! Help me if you can! C;
xxMikexx [17]

<h3><u>Original Rate</u>                     <u>Unit Rate</u>                   </h3>

    90 Miles                                 45 Miles                  

     2 Hours                                   1 Hour    

Answer:  <u><em>The Train  travels 45 miles in one hour.</em></u>

How i got the answer? I divied the 90 by 2 because we already know the miles/hour for 2 hours and we need 1 hour.

<em><u>Give Brainliest If You Please</u></em>

5 0
3 years ago
Please help!! thank you.
Zina [86]

(A) Product of -2x^{3}+x-5 and x^{3}-3x-4 is:

(-2x^{3}+x-5)(x^{3}-3x-4)

=-2x^{3}(x^{3}-3x-4)+x(x^{3}-3x-4)-5(x^{3}-3x-4)

=(-2x^{3})(x^{3})+(-2x^{3})(-3x)+(-2x^{3})(-4)+x(x^{3})+(x)(-3x)+(x)(-4)+(-5)(x^{3})+(-5)(-3x)+(-5)(-4)

=-2x^{6}+6x^{4}+8x^{3}+x^{4}-3x^{2}-4x-5x^{3}+15x+20

=-2x^{6}+6x^{4}+x^{4}+ 8x^{3}-5x^{3}-3x^{2}-4x+15x+20

=-2x^{6}+7x^{4}+3x^{3}-3x^{2}+11x+20

(B) Yes.

Product of -2x^{3}+x-5 and x^{3}-3x-4 = Product of x^{3}-3x-4 and -2x^{3}+x-5 because multiplication is commutative.

Commutative Property of multiplication says that a.b = b.a.

Thus, multiplication is same irrespective of the order of two numbers.



5 0
3 years ago
Find the length of the third side. If necessary, round to the nearest tenth.
blsea [12.9K]

Answer:

12

Step-by-step explanation:

a² + b² = c²

5² + b² = 13²

25 + b² = 169

b² = 144

b = 12

Answer: 12

5 0
1 year ago
Read 2 more answers
they hold an anual pass that cost $40.00. each canoe rental costs $26.00 and each bicycle rental cost $15.00. use an algebraic e
postnew [5]

Answer:

Cost = 40.00 + 26.00c + 15.00b

Step-by-step explanation:

Let c = number of canoe rentals

and b = number of bicycle rentals. Then

   Annual pass = 40.00

Canoe rentals = 26.00c

Bicycle rentals = 15.00b

        Total cost = 40.00 + 26.00c + 15.00b

6 0
3 years ago
A coffee franchise is opening a new store. The company estimates that there is a 70% chance the store will have a profit of $50,
aivan3 [116]

Step-by-step explanation:

The expected value is the sum of each outcome times its probability.

E = (0.70)(50000) + (0.05)(0) + (0.25)(-3500)

E = 34125

The store is expected to gain $34,125.

8 0
2 years ago
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