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Lelechka [254]
3 years ago
6

Recently in the United States, there were about 300,000,000 cell phone users. That same year there were about 5.7x10^9 cell phon

e users worldwide. About how many times larger was the number of cell phone users world wide than in the United States?
Please provide steps.
Mathematics
2 answers:
tino4ka555 [31]3 years ago
7 0
US:  3 x 10^8
5.7 x 10^9  /  3 x 10^8 = 19
Alla [95]3 years ago
6 0
\frac{users worldwide}{US users}
\frac{5700000000}{300000000}
19
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MArishka [77]

Answer: 24.6 inches


Step-by-step explanation: Since it's a rectangle, and not a rectangular prism, that means it's 2D. Length is the long sides on the top and bottom, and width is the shorter sides on it's left and right. So since there's two of each, just do 8.1 + 8.1 + 4.2 + 4.2 and you have your answer!


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2 years ago
one x-intercept for a parabola is at the point (2, 0). use the quadratic formula to find the other x-intercept for the parabola
omeli [17]

Answer:

Step-by-step explanation:

There are 3 ways to find the other x intercept.

1) Polynomial Long Division.

Divide x^2 - 3x + 2 by the binomial x - 2, because by the Factor Theorem if a is a root of a polynomial then x - a is a factor of said polynomial.

2) Just solving for x when y = 0, by using the quadratic formula.

x^2 - 3x + 2 = 0\\x_{12} = \frac{3 \pm \sqrt{9 - 4(1)(2)}}{2} = \frac{3 \pm 1}{2} = 2, 1.

So the other x - intercept is at (1, 0)

3) Using Vietta's Theorem regarding the solutions of a quadratic

Namely, the sum of the solutions of a quadratic equation is equal to the quotient between the negative coefficient of the linear term divided by the coefficient of the quadratic term.

x_1 + x_2 = \frac{-b}{a}

And the product between the solutions of a quadratic equation is just the quotient between the constant term and the coefficient of the quadratic term.

x_1 \cdot x_2 = \frac{c}{a}

These relations between the solutions give us a brief idea of what the solutions should be like.

6 0
3 years ago
Find the ratio of book price to number of pages for each ordered pair. Round your answer to the nearest hundredth. A 3-column ta
Harlamova29_29 [7]

The ratio of book price to number of pages for the ordered pairs a, b , and c are:

  • <em>A = 0.05</em>
  • <em>B = 0.05</em>
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The ratio of book price to number of pages can be evaluated for each ordered pairs as follows;

  • For a = 20.00/400 = 0.05

  • For b = 6.25/125 = 0.05

  • For c = 15.0/350 = 0.043

Therefore, ratio of book price to number of pages for the ordered pairs a, b , and c are:

a = 0.05

b = 0.05

c = 0.043

Learn more about ratio:

brainly.com/question/16981404

6 0
2 years ago
Andrea's rectangle measures 2 1/2 units by 2 1/2 units. What is its area?
Art [367]

Answer:6.25

Step-by-step explanation:

2.5x2.5=6.25

8 0
2 years ago
I NEED HELP BADLY!!!
DaniilM [7]
Vertical angles are where the top equals the bottom or the left equals the right angle. So we would do:
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And then substitute.
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3 years ago
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