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Montano1993 [528]
3 years ago
9

Please help. I’ll mark you as brainliest if correct!

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
8 0

Answer:

a = 13

b = 0

Step-by-step explanation:

Conjugate of -3 + 2i is -3 - 2i

(-3 + 2i) (-3 - 2i)

We need to expand:

9 + 6i + -6i + -4i^2

-4i^2 =(-4)(-1) = 4

9 + 4 = 13

a = 13

b = 0

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Answer:

D.It is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

Step-by-step explanation:

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6 0
3 years ago
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21 students went on an exchange program to hong kong. There were 11 more women than men. How many woman are there?
daser333 [38]

Answer:

11

Step-by-step explanation:

11 + 10 = 21

8 0
3 years ago
What is the estimate answer and the exact answer of 17/10 ÷2 4/5
OLEGan [10]
Both 17/10 and 2 4/5 should be rounded up in preparation for this estimation.

17/10 is close to 2 and 2 4/5 is close to 3.  Thus, your estimated answer should be
                     2/3, or approx. 0.6666....

Exact answer:    divide 17/10 by 14/5.  LCD is 10, so convert 14/5 to 28/10.

Now divide 17/10 by 28/10.  Answer:  17/28 = approx.   =  0.607 approx.

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8 0
4 years ago
Six distinct integers are picked from the set {1, 2, 3,…, 10}. How many selections are there, in which the second smallest integ
Ksivusya [100]

Answer:

1680 ways

Step-by-step explanation:

Total number of integers = 10

Number of integers to be selected = 6

Second smallest integer must be 3. This means the smallest integer can be either 1 or 2. So, there are 2 ways to select the smallest integer and only 1 way to select the second smallest integer.

<u>2 ways</u>   <u>1 way</u>  <u>       </u>  <u>        </u>  <u>        </u>  <u>        </u>

Each of the line represent the digit in the integer.

After selecting the two digits, we have 4 places which can be filled by 7 integers. Number of ways to select 4 digits from 7 will be 7P4 = 840

Therefore, the total number of ways to form 6 distinct integers according to the given criteria will be = 1 x 2 x 840 = 1680 ways

Therefore, there are 1680 ways to pick six distinct integers.

6 0
4 years ago
Can someone please help me I'm confused as to what I'm supposed to do.
kobusy [5.1K]
I hope this helps you


(fog)(5)=f (g (5))=?



x= 5 g (5)=-4.5+3=-20+3=-17




f (g(5))=f (-17)=-2. (-17)-7




f (-17)=34-7




f (-17)=27
4 0
3 years ago
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