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3 years ago

Find the difference (-8+5i)-(8-2i

Mathematics

1 answer:

Rudiy273 years ago

7 0

Break it down by like terms

-8-8. 5i -(-2i)

16. 5i+ 2i

16+7i

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A bag had 7 orange rocks , 6 green rock , 1 white rock ,7 black rocks , and 2 yellow you randomly pull a rock from the bag ,keep

daser333 [38]

Answer:

$Probability = \frac{7}{253}$

Step-by-step explanation:

Given

$Orange = 7$

$Green = 6$

$White = 1$

$Black = 7$

$Yellow = 2$

Required

Probability of selecting a yellow then orange rock

From the question, we understand that the probability is that of without replacement.

Since the yellow, is first picked.

We need to determine the probability of picking a yellow rock, first.

$P(Yellow) = \frac{n(Yellow)}{Total}$

$P(Yellow) = \frac{2}{7 + 6 + 1 + 7 + 2}$

$P(Yellow) = \frac{2}{23}$

The rock has reduced by 1;

Next is to determine the probability of picking an orange rock

$P(Orange) = \frac{n(Orange)}{Total - 1}$

$P(Orange) = \frac{7}{7 + 6 + 1 + 7 + 2- 1}$

$P(Orange) = \frac{7}{22}$

The required probability is calculated as thus:

$Probability = P(Yellow) * P(Orange)$

$Probability = \frac{2}{23} * \frac{7}{22}$

$Probability = \frac{14}{506}$

$Probability = \frac{7}{253}$

4 0

3 years ago

Help urgently. Which one should I circle?

ratelena [41]

Answer: 500

Step-by-step explanation:

502.564102564 rounded is 500

8 0

3 years ago

What is the solution to the equation 1/4x+2=-5/8x-5

Fed [463]

multiply everything by 8

2x+16 = -5x-40

-16 on both sides

2x = -5x-56

+5x on both sides

7x = -56

x=-8

so the first option

5 0

3 years ago

Read 2 more answers

24% of students in a class are girls. If there are less than 30 students in this class, how many students are there? How many gi

castortr0y [4]

Answer:

Step-by-step explanation:

The GCF (greatest common factor) of 24 and 30 is 6.

30-30/6=25

25 students in the class

24% of 25 is 6

6 girls in the class

5 0

3 years ago

Jessica has some markers. She has 5 more black markers than blue markers. She has 4 times as many red markers as black markers.

abruzzese [7]

The answer is 73 because , 5+8=13 black times 4=52 red so

8 blue + 13 black + 52 red = 73 markers in all

4 0

3 years ago

Find the difference (-8+5i)-(8-2i​

Find the difference (-8+5i)-(8-2i