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3 years ago

A bottle contains red beads and white beads.

1 answer:

4 0

Start by multiplying the amount of white beads by 3 (there are 3 times more red than white!)

1,875 * 3 = 5,625 red beads.

Well, to find the TOTAL number of beads (red AND white), add the red beads (5,625) and the white beads (1,875).

5,625 + 1,875 = 7,500

So the answer is 7,500 beads (:
Hope this helped!

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A distribution has a mean of 90 and a standard deviation of 15. Samples of size 25 are drawn randomly from the population. Find

raketka [301]

Answer:

The probability is 0.04746

Step-by-step explanation:

Firstly, we calculate the z-score here

Mathematically;

z-score = x-mean/SD/√n

Where from the question;

x = 85, mean = 90 , SD = 15 and n = 25

Plugging these values into the equation, we have;

Z = (85-90)/15/√25 = -5/15/5 = -1.67

So the probability we want to calculate is ;

P(z > -1.67)

We use the standard normal distribution table for this;

P(z > -1.67) = 0.04746

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3 years ago

Sally climbed 575 steps in 11.5 minutes. How many steps did she average per minute?

irga5000 [103]

Answer:

Step-by-step explanation:

575/11.5=50

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3 years ago

Read 2 more answers

Evaluate -6-(-6) +7+(-4) + (-1).

frutty [35]

solution :--

= -6 + 6 + 7 - 4 - 1

= 6 + 7 - 6 - 4 - 1

= 13 - 11

3 0

3 years ago

How many proper subsets does the set { 1,2,3} have

OverLord2011 [107]

Answer:

Step-by-step explanation:

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2 years ago

(-2h3n2)(-5h2n2) How

IRINA_888 [86]

Answer: 9h x 8n^2

we rearrange this underneath the question (-5h-2h) (2nx3n)(2+2) or if 2^2 see explanation. It must therefore be 7h6n4

Step-by-step explanation:

if its ^2 )(power2) then the second reasonable answer is (7h-2h)(2n^2 x 2n^2)=9h x 4n^2 x4n^2 =9h 8n^2 or 17hn^2 but i leave as 9h 8n^2

You can expand only if multiplying 9hx4 for example but not combine the letters. The questions that ask you to mix are much different to this. but if you want to add them 9h+8n^2 =17hn^2

3 0

3 years ago