3 years ago

A large cheese pizza costs

Mathematics

1 answer:

Liula [17]3 years ago

4 0

Answer:

2999990000 DOLLARS

Step-by-step explanation:

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alexgriva [62]

A

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3 years ago

What number makes this ratio equivalent?<br><br><br>12/20 = 6/x<br>I will give crown for answer

insens350 [35]

Answer:

Step-by-step explanation:

12/20 = 6/x

Using cross products

12*x = 20*6

12x = 120

Divide by 12

12x/12 = 120/12

x = 10

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3 years ago

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Which equation has the solutions x = 1+ V5?

irina1246 [14]

Answer:

x^2-2x-4=0

Δ=2^2-4*1*(-4)

Δ=4+16=20

VΔ=2V5

x1= (2+2V5)/2=1+V5

the answer is D

Step-by-step explanation:

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3 years ago

A triangular prism has base that is a right triangle.

Schach [20]

The dimensions can vary. Here is a picture of a triangular prism with a right-triangle base.

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3 years ago

Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d

Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

$n = 320$ --- the sample size

$\sigma = 2.9$ --- the standard deviation

$\bar x = 24$ --- the mean

$\alpha = 90\%$ --- the confidence level.

The margin of error (E) is calculated as follows:

$E = z \times \sqrt{\frac{\sigma^2}{n}}$

So, we have:

$E = z \times \sqrt{\frac{3.2^2}{320}}$

$E = z \times \sqrt{\frac{10.24}{320}}$

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

$E = 1.645 \times \sqrt{\frac{10.24}{320}}$

$E = 1.645 \times \sqrt{0.032}$

Take square roots

$E = 1.645 \times 0.1789$

Multiply

$E = 0.2943$

Approximate

$E = 0.29$

Hence, the margin of error is 0.29