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Free_Kalibri [48]
4 years ago
14

Solve Quadratic equations x^2+13=0

Mathematics
1 answer:
Lady_Fox [76]4 years ago
8 0

We have x^2 = - 13;

x = + or - i\sqrt{13};

The solutions are imaginary.

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Find the sum of the geometric series given a1=2, r=−3, and n=8.
inn [45]

Answer:

<u>Sum</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>G</u><u>.</u><u>P</u><u> </u><u>is</u><u> </u><u>-</u><u>3</u><u>2</u><u>8</u><u>0</u>

Step-by-step explanation:

Summation:

{ \bf{sum =  \frac{a( {r}^{n }-1 )}{r - 1} }} \\  \\ { \tt{sum =  \frac{2( { { - 3}^{8 } -1)} }{ - 3 - 1} }} \\ { \tt{ =  \frac{13120}{-4} }} \\  = -3280

3 0
4 years ago
Read 2 more answers
If EG = 28 and F is the midpoint of<br> segment EG, the length of EF =<br> E<br> F.<br> G
valina [46]
If line segment EF is 28 and F is halfway through the line, then segment EF will be half of 28. So segment EF=14
8 0
3 years ago
I don't really understand the question so can someone help me answer the question please?​
Ksivusya [100]

Answer:

1/ 3

Step-by-step explanation:

If each of the cards is turned over, the probability of picking up a card of one type P(E) becomes equal to:

=> P(E) = number of cards of the required type/ total number of cards

● Total number of spades( ♤ ) = 3

{the queen, one ace and the nine are all spades}

● Total number of cards = 6

Probability of drawing a spade= 3/ 6

= 1/ 2

● Total number of "7" = 1

● Total number of cards = 6

Probability of drawing a 7

= 1/ 6

Now, what's asked is the difference in the probabilities of drawing a spade and a seven.

= 1/ 2 - 1/ 6

= 3/ 6 - 1/ 6

= 2/ 6

= 1/ 3

Hence, 1/ 3 of a greater chance of drawing a spade over a 7.

5 0
3 years ago
Does anyone know the answers? I'm awful at evaluation. <br> |7-9|=<br> |7|-9=
ella [17]

Answer:

2; -2

Step-by-step explanation:

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|7|-9= 7 - 9 = -2

3 0
3 years ago
It takes a ant farm 3 days to comsume 1/2 of an apple.At that rate,in how many days will the ant farm consume 3 apples?
alexgriva [62]

Answer:

18

Step-by-step explanation:

In three days, the ant farm consumed 1/2 an apple. In 6 days the ant farm will consume 1 apple. We can multiply 6 days by 3 for three apples.

6(3)=18 days

5 0
3 years ago
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