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pshichka [43]
3 years ago
14

How do I solve this problem?? Please help!

Mathematics
1 answer:
9966 [12]3 years ago
4 0
Step 1. Since 8 x 8 = 64, The square root of 64 is 8.
v^{2} =-8

Step 2. Take the square root of both sides.

v= + \sqrt{-8}
<span>
Step 3. </span>Simplify \sqrt{-8} to ( \sqrt{8j})

v = +  \sqrt{8j}


Step 4. Simplify square root

v=+2 \sqrt{2j}
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The weekly amount spent by a small company for in-state travel has approximately a normal distribution with mean $1450 and stand
Llana [10]

Answer:

0.0903

Step-by-step explanation:

Given that :

The mean = 1450

The standard deviation = 220

sample mean = 1560

P(X > 1560) = P( Z > \dfrac{x - \mu}{\sigma})

P(X > 1560) = P(Z > \dfrac{1560 - 1450}{220})

P(X > 1560) = P(Z > \dfrac{110}{220})

P(X> 1560) = P(Z > 0.5)

P(X> 1560) = 1 - P(Z < 0.5)

From the z tables;

P(X> 1560) = 1 - 0.6915

P(X> 1560) = 0.3085

Let consider the given number of weeks = 52

Mean \mu_x = np = 52 × 0.3085 = 16.042

The standard deviation =  \sqrt {n \time p (1-p)}

The standard deviation = \sqrt {52 \times 0.3085 (1-0.3085)}

The standard deviation = 3.3306

Let Y be a random variable that proceeds in a binomial distribution, which denotes the number of weeks in a year that exceeds $1560.

Then;

Pr ( Y > 20) = P( z > 20)

Pr ( Y > 20) = P(Z > \dfrac{20.5 - 16.042}{3.3306})

Pr ( Y > 20) = P(Z >1 .338)

From z tables

P(Y > 20) \simeq 0.0903

7 0
3 years ago
Right answer gets brainlist
jok3333 [9.3K]

Answer:

there ain't nun to answer here

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which equation has the solution x = 5?
alexgriva [62]
It would be 32-4x=12
32-4(5)=12
32-20=12
12=12
4 0
3 years ago
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Unit rate of $42 for 3 books
HACTEHA [7]
I think it would be $14 per book
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3 years ago
I have a square piece of paper.
jarptica [38.1K]

Answer:

a) 30 cm

b) 20 cm

Step-by-step explanation:

Rectangle B's perimeter is 10+10+5+5 which is 30

Square C's perimeter is 5+5+5+5 which is 20

4 0
3 years ago
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