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3 years ago

(3.5x10^-5)(3x10^-10) express in scientific notation

Mathematics

1 answer:

kirza4 [7]3 years ago

7 0

Your to you problem is 1.05 times 10^-14

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Jerald jumped from a bungee tower. If the equation that models his height, in feet, is h = –16t2 + 729, where t is the time in s

Snezhnost [94]

Answer. First option: t > 6.25

Solution:

Height (in feet): h=-16t^2+729

For which interval of time is h less than 104 feet above the ground?

h < 104

Replacing h for -16t^2+729

-16t^2+729 < 104

Solving for h: Subtracting 729 both sides of the inequality:

-16t^2+729-729 < 104-729

-16t^2 < -625

Multiplying the inequality by -1:

(-1)(-16t^2 < -625)

16t^2 > 625

Dividing both sides of the inequality by 16:

16t^2/16 > 625/16

t^2 > 39.0625

Replacing t^2 by [ Absolute value (t) ]^2:

[ Absolute value (t) ]^2 > 39.0625

Square root both sides of the inequality:

sqrt { [ Absolute value (t) ]^2 } > sqrt (39.0625)

Absolute value (t) > 6.25

t < -6.25 or t > 6.25, but t can not be negative, then the solution is:

t > 6.25

5 0

4 years ago

Read 2 more answers

Suppose that an insurance company classifies people into one of three classes — good risks, average risks, and bad risks. Their

Dominik [7]

Answer: Our required probability is 0.745.

Step-by-step explanation:

Since we have given that

Probability of getting good risks people = 0.05

Probability of getting average risks people = 0.15

Probability of getting bad risks people = 0.30

Probability of getting good risk accident = 0.2

Probability of getting average risk accident = 0.5

Probability of getting bad risk accident = 0.3

So, Probability of people having accident in a year is given by

$0.05\times 0.2+0.15\times 0.5+0.30\times 0.3\\\\=0.175$

Probability of people either good or average risk given that he\she had no accident is given by

$=\dfrac{0.2\times 0.95+0.5\times 0.85}{1-0.175}\\\\=\dfrac{0.615}{0.825}\\\\=0.745$

Hence, our required probability is 0.745.

3 0

3 years ago

What is the domain of this exponential function?

STALIN [3.7K]

The last option
All real numbers

5 0

3 years ago

Blank 1/2 = 422/2 What is the blank

Korvikt [17]

Let x be the blank number

x 1/2= 422/2

Cross multiply

x(1)*(2) = 422*2

2x = 844

Divide both sides by 2

2x/2 = 844/2

x = 422

I hope that's help !

3 0

3 years ago

PLEASE HURRY ASAP!!!!!!!! ( select all that apply)

Neporo4naja [7]

The first one is true, so is the fourth one. The second one is not true and I'm not sure about the 3rd one, you would have to write them all out in numerical order and find the one in the middle

7 0

3 years ago

Read 2 more answers