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3 years ago

What is the product of 840 and 4.6•10 to the 2nd power

Mathematics

1 answer:

lianna [129]3 years ago

3 0

Answer:

386,400

Step-by-step explanation:

840 x 4.6 x 10^2nd power

4.6 x 10^2nd power = 460

840 x 460 = 386,400

386,400

Hope this helps!

Plz name brainliest if possible!

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When Emily arrives from school she spent a minute eating a snack then she spent 15 playing with her dog and 32 doing her chores

Neporo4naja [7]

The question is incomplete:

When Emily arrived home from school she spent a minutes eating a snack. Then, she spent 15 minutes playing with her dog and 32 doing her chores . Finally, Emily spent 45 minutes finishing her homework. How long had Emily been home when she finished?

Answer:

Emily had been home for 1 hour and 33 minutes.

Step-by-step explanation:

In order to find the answer, first you have to add up the time she spent in each activity to find the amount of minutes she had been at home when she finished:

1+15+32+45=93

Now, you can express the 93 minutes in hours considering that one hour has 60 minutes. According to this, Emily had been home for 1 hour and 33 minutes (93-60=33).

8 0

3 years ago

The random variable X~(30,2^2) Find p(X<33) Find p(X>26)

Ostrovityanka [42]

Answer:

i) P(X<33) = 0.9232

ii) P(X>26) = 0.001

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 30

Given that the standard deviation of the Population = 4

Let 'X' be the Normal distribution

Step(ii):-

Given that the random variable X = 33

$Z = \frac{x-mean}{S.D}$

$Z = \frac{33-30}{2} = 1.5$ >0

P(X<33) = P( Z<1.5)

= 1- P(Z>1.5)

= 1 - ( 0.5 - A(1.5))

= 0.5 + 0.4232

P(X<33) = 0.9232

Step(iii) :-

Given that the random variable X = 26

$Z = \frac{x-mean}{S.D}$

$Z = \frac{33-26}{2} = 3.5$ >0

P(X>26) = P( Z>3.5)

= 0.5 - A(3.5)

= 0.5 - 0.4990

= 0.001

P(X>26) = 0.001

5 0

3 years ago

Rewrite the equations in slope-intercept form. Determine the slope.

notsponge [240]

This should have been worth more points, but anyways, here are the answers. Please give thanks :)

1.)Y = 5 - 3X
2.) Y= 3X - 4
3.) Y = 7 - X
4.) Y = -5X
5.) Y = X +6 
6.) Y = 5 -3X
7.) Y = 2 + $\frac{4}{3}$ X
8.) Y = $\frac{1}{2}$ X - 3
9.) Y= 2 - [tex] \frac{2}{3} [/tex]
10.) Y = 1 - 5X
11.) Y = 2 - $\frac{1}{3}$ X
12.) Y = -5 -2X
13.) Y = X - 6
14.) Y = $\frac{10}{3}$ -2X
15.) Y = 2 + $\frac{4}{3}$ X
16.) Y = 2 + $\frac{4}{3}$ X
17.) Y = 1 - 5X
18.) Y = [tex] \frac{3}{4} [/tex]X + 2

5 0

3 years ago

The probability that a student pilot passes the written test for a private pilot's license is 0.7. what is the probability that

zhenek [66]

Probability = 0.063 Fourth try = 0.0973 Let X be the number of failed attempts at passing the test before the student passes. This is a negative binomial or geometric variable with x â {0, 1, 2, 3, . . .}, p = P(success) = 0.7 and the number of successes to to observe r = 1. Thus the pmf is nb(x; 1, p) = (1 â’ p) xp. The probability P that the student passes on the third try means that there were x = 2 failed attempts or P = nb(2, ; 1, .7) = (.3)2 (.7) = 0.063 . The probability that the student passes before the third try is that there were two or fewer failed attmpts, so P = P(X â‰¤ 2) = nb(0, ; 1, .7) + nb(1, ; 1, .7) + nb(2, ; 1, .7) = (.3)0 (.7) + (.3)1 (.7) + (.3)2 (.7) = 0.973 .

4 0

3 years ago

Which two points are on the graph of y = -x + 3?

ch4aika [34]

The points (0, 3) and (4, -1) are on the graph of y = -x + 3.

I have a site that I use a lot that is perfect for problems like these. It's called Desmos.com. It's basically a free online graphing calculator that is super helpful for most problems relating to graphs.

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3 years ago