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3 years ago

What is 900000000 divided by 2000

Mathematics

2 answers:

asambeis [7]3 years ago

4 0

= $\frac{900000000}{2000}$
Lets cancel the 0's with 0's
= $\frac{900000}{2}$
=450000

PolarNik [594]3 years ago

4 0

Your answer is 450000

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Suppose A and B are independent events. If P(A)=0.4 and P(B)=0.9, what is P(A ∩ B) ? answers- a. .36 b. .06 c. .04 d. .54

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The answer would be 0.54

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3 years ago

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Solve the following system of linear equations:<br> 4x - 2y = 3

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Answer:

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Step-by-step explanation:

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2 years ago

A store sells Brazilian coffee for $10 per lb. and Columbian coffee for $14 per lb. If the store decides to make a 150-lb. blend

Artemon [7]

Answer:

The store should use 112.5 pounds of Brazilian coffee and 37.5 pounds of Colombian cofee.

Step-by-step explanation:

Let "b" be the amount of Brazilian coffee, in pounds, required for the blend and "c" the amount of Colombian coffee required, in pounds.

Since there are two unknown variables a two-equation system is needed to solve the problem, we can set up one equation for weight and another for price as follows:

$b+c=150\\10*b+14*c=11*150$

Solve for "c" by multiplying the first equation by -10 and adding it to the second one:

$b+c=150\\10b+14c -10b-10c=11*150 -(10*150)\\4c=150\\c = 37.5$

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The store should use 112.5 pounds of Brazilian coffee and 37.5 pounds of Colombian cofee.

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2 years ago

A major metropolitan newspaper selected a simple random sample of 1,600 readers from their list of 100,000 subscribers.

Tpy6a [65]

Answer: $(0.36845,\ 0.43155)$

Step-by-step explanation:

Let p be the population proportion of readers who would like more coverage of local news.

As per given , we have

sample size :=1600

sample proportion : $\hat{p}=40\%=0.40$

The confidence interval for population proportion is given by :-

$\hat{p}\pm z^* \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

From z-table ,

For 99% confidence interval the z-value is 2.576.

Substitute all the values in the above formula , we get

The 99% confidence interval for the proportion of readers who would like more coverage of local news as

$0.40\pm(2.576) \sqrt{\dfrac{0.40(1-0.40)}{1600}}$

$0.40\pm(2.576) \sqrt{\dfrac{0.24}{1600}}$

$0.40\pm(2.576) \sqrt{0.00015}$

$0.40\pm(2.576) (0.0122474487139)$

$0.40\pm0.03155$

$(0.40-0.03155,\ 0.40+0.03155)=(0.36845,\ 0.43155)$

Hence, the 99% confidence interval for the proportion of readers who would like more coverage of local news is $(0.36845,\ 0.43155)$ .

5 0

3 years ago

Find the value of x.<br>m<2= 10x + 10<br>

Gekata [30.6K]

Answer:

The answer to your question is x = 3

Step-by-step explanation:

Data

m∠2 = 10x + 10

exterior angle = 110°

x = ?

Process

1.- Find the measure of the angle supplementary to the angle 110°. It will be angle y.

180° = 110° + y

- Solve for y

y = 180 - 110

y = 70

2.- From the picture we conclude that the triangle is Isosceles because two of its sides measure the same.

In an Isosceles triangle two of its angles measure the same so,

180° = 70° + 70° + ∠2

- Solve for ∠2

∠2 = 180 - 70 - 70

∠2 = 40

3.- Find x

10x + 10 = 40

Solve for x

10x = 40 - 10

10x = 30

x = 30/10

x = 3

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3 years ago