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Valentin [98]
3 years ago
12

Write in the form a+bi. 4i(-I+3)-3(6-2i)

Mathematics
1 answer:
exis [7]3 years ago
3 0

Answer:

  -14 +18i

Step-by-step explanation:

Collect terms as if i were a variable, then replace any i² with -1.

  4i(-i +3) -3(6 -2i) = -4i² +12i -18 +6i = 4 -18 +12i +6i

  = -14 +18i

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Jonas jogged up the hill at an average rate of of a mile per minute and then walked down the hill at an average rate of of a mil
Orlov [11]
Answer: option d) (1/16) (42 - x)

Explanation:

1) You forgot to include the table.

This is the table:

                                    Rate              time                 distance
                                 (mi / min)         (min)                   (mi)

up the hill                    1/12                  x                     (1/12)x

down the hill                1/16                 42-x                     ?

2) You also forgot to include the set of answerchoices. This is it:

a) x
b) -x
c) 42 - x
d) (1/16) (42-x)

3) Solution:

The missing value is the distance of the trip down the hill.

The distance is the rate times the time, i.e.:

distance = rate * time

the rate is given as 1/16, and the time is given as 42 - x, so the distance is:

distance = (1/16) (42 - x), which is the answer.
4 0
4 years ago
Read 2 more answers
90 degrees <br> 45 degrees <br> X <br> Whats x?
Fiesta28 [93]

Answer:

x = 45

Step-by-step explanation:

Each corner of the square is a right angle measuring 90 degrees.

x + 45 = 90

x = 45

5 0
3 years ago
30,000 is how many times as much as 30?
erik [133]
1000, it's a simple division problem. 30,000 divided by 30.
7 0
4 years ago
The function fis given by this table of values.
Mama L [17]

Answer:

no man you should reconsider the question again

try typing again i guess its wrong

4 0
2 years ago
Question 1
allochka39001 [22]

Answer:

Step-by-step explanation:

Perimeter of quarter circle = r + r + \frac{1}{4}*2*\pi *r

            = 10 + 10 + \frac{1}{4}*2*3.14*10\\\\= 10 + 10 +  3.14*5\\\\\\= 10 + 10 + 15.70\\\\= 35.70 cm

2) d = 2*10 = 20 cm

Perimeter of semicircle = diameter + (1/2) * circumference of circle

                         = 20 +  \frac{1}{2}* 2*\pi *r\\\\= 20 + \frac{1}{2}*2*3.14*10\\\\= 20 + 3.14*10\\\\= 20 + 31.4\\\\= 51.40 cm

3) Perimeter of three-quarter =  r + r + (3/4)* circumference of circle

          = 10 + 10 + \frac{3}{4}*2*\pi *r\\\\= 10 + 10 + \frac{3}{4} * 2 * 3.14 * 10\\\\= 10 + 10 + 3 * 3.14 * 5\\\\= 10 + 10 + 47.1\\\\= 67.1 cm

5 0
3 years ago
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