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koban [17]
3 years ago
13

WILL GIVE BRANLIEST,VOTE, AND RATE!!!!!!!!!!!

Mathematics
1 answer:
kondaur [170]3 years ago
4 0

Step-by-step explanation:

1st digit is 1 number (1)

2nd digit is (3,4,5) so it's 3 numbers

third digit is (6,7,8,9) is it's 4 numbers

last 7 digits is 10 (0,1,2,3,4,5,6,7,8,9)

multiply

1*3*4*10=120

so answer is 120 phone numbers

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The legs of the isosceles triangle each measure 14 inches. calculate the length of the hypotenuse
Evgen [1.6K]

Answer:

I'm guessing you are talking about an isosceles RIGHT triangle.

In such a triangle, the length of the hypotenuse equals the length of either leg times the square root of 2.

hypotenuse = 14 * square root of 2 =

14 * 1.4142135623731  = 19.79898987322330

or rounding that equals 19.80 inches

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Which of the following linear equations describes that relationship?
JulsSmile [24]

Answer:

  • D. f(x) = 4x - 3

Step-by-step explanation:

<u>Use two pairs of points to work out the equation: </u>

  • (1, 1) and (2, 5)

<u>Find the slope:</u>

  • m = (5 - 1) / (2 - 1) = 4/1 = 4

<u>Find the y-intercept:</u>

  • 1 = 4*1 + b
  • b = 1 - 4
  • b = - 3

<u>The line is:</u>

  • f(x) = 4x - 3

Correct choice is D

8 0
2 years ago
In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack Obama a great deal, a moderat
Alexus [3.1K]

Answer:

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 1004, \pi = 0.53

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.4894

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.5706

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

3 0
3 years ago
The cardboard box below is used by a company to package new laptops of the company plans to increase the length of the Box by 2i
harina [27]

Answer:

D

Step-by-step explanation:

3 0
3 years ago
A comet is about 7.63 × 103 miles from Earth. Write this number in standard form.
Simora [160]

Answer:

7630

Step-by-step explanation:

We have that the distance of a comet from Earth is about 7.63*10³ .

This number is given in scientific notation.

We want to write this number in standard form.

Since we are multiplying by a power of 10, we move forward three times.

Therefore in standard form:

7.63 \times  {10}^{3}  = 7630

3 0
3 years ago
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