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3 years ago

Using a multiple of 10 for at least one factor, write an equation with a product that has four zeros

Mathematics

2 answers:

kifflom [539]3 years ago

4 0

It is 10x4000 because then it equals 40000. This number has 4 zeros.

Hoped this helped you :D

Maslowich3 years ago

3 0

10 times 4000= 40000

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A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimat

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Step-by-step explanation:

confidence coefficient for 99% is 2.58

2.58 * 19.4/sqrt(n) = 0.04

2.598*19.4/0.04 = sqrt(n)

( 2.598*19.4/0.04)^2 = n

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3 years ago

The number of electrical outages in a city varies from day to day. Assume that the number of electrical outages ( x ) in the cit

forsale [732]

Answer:

Therefore, the mean and the standard deviation for the number of electrical outages (respectively) are 0.26 and 0.5765 respectively.

Step-by-step explanation:

Given the probability distribution table below:

$\left|\begin{array}{c|cccc}x&0&1&2&3\\P(x)&0.8&0.15&0.04&0.01\end{array}\right|$

(a)Mean

Expected Value, $\mu =\sum x_iP(x_i)$

=(0*0.8)+(1*0.15)+(2*0.04)+(3*0.01)

=0+0.15+0.08+0.03

Mean=0.26

(b)Standard Deviation

$(x-\mu)^2\\(0-0.26)^2=0.0676\\(1-0.26)^2=0.5476\\(2-0.26)^2=3.0276\\(3-0.26)^2=7.5076$

Standard Deviation $=\sqrt{\sum (x-\mu)^2P(x)}$

$=\sqrt{0.0676*0.8+0.5476*0.15+3.0276*0.04+7.5076*0.01}\\=\sqrt{0.3324}\\=0.5765$

Therefore, the mean and the standard deviation for the number of electrical outages (respectively) are 0.26 and 0.5765 respectively.

3 0

3 years ago

How many times do you have to regroup in 778-168

klemol [59]

Answer:

You wouldn't have to regroup at all

Step-by-step explanation:

8-8 is 0 no regrouping there. 7-6 is 1 no regrouping there. 7-1 is 6 no regrouping there. Answer is 610 as well

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4 years ago

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Answer:

Step-by-step explanation:

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4 years ago

elijah bought a total of 16 pounds of peanuts and cashews and pain $49.50. If peanuts cost $2.75 per pound and cashews nuts cost

Orlov [11]

Answer:

The answer to your question is He bought 11 pounds of cashew.

Step-by-step explanation:

Data

Total pounds = 16

peanuts = p = $2.75

cashew = c = $3.25

total cost = $49.5

Process

1.- Write two equations to solve this problem

p + c = 16 Equation 1

2.75p + 3.25c = 49.50 Equation 2

Solve the system by substitution

2.- Solve equation 1 for p

p = 16 - c

Substitute p in equation 2

2.75(16 - c) + 3.25c = 49.5

Expand

44 - 2.75c + 3.25c = 49.5

Solve for c

3.25c - 2.75c = 49.5 - 44

0.5c = 5.5

c = 5.5/0.5

c = 11

3.- Find p

p = 16 - 11

p = 5 pounds

4.- Conclusion

Ellijah bought 11 pounds of cashew and 5 pounds of peanuts

5 0

3 years ago