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3 years ago

How do you write 4 hundreds 13 tens 5 ones in standard form?

1 answer:

4 0

The correct answer is: 
535.

Explanation: 
4 hundreds = 4*100=400.
13 tens = 13*10 = 130.
5 ones = 5*1=5.

Together, this gives us 400+130+5=535.

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Please help me with these problems

natita [175]

Check the picture below.

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3 years ago

Solve for x

KIM [24]

7.5 ft because
6/30 = .0005 so then x we factor in equals 7.5 for

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3 years ago

Evelyn wants to estimate the percentage of people who own a tablet computer she surveys 150 indvidals and finds that 120 own a t

igomit [66]

Answer:

The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%

Step-by-step explanation:

Confidence interval for the proportion of people who own a tablet:

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:

$n = 150, \pi = \frac{120}{150} = 0.8$

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 $Z = 2.576$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 - 2.575\sqrt{\frac{0.8*0.2}{150}} = 0.7159$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.8 + 2.575\sqrt{\frac{0.8*0.2}{150}} = 0.8841$

Percentage:

Multiply the proportion by 100.

0.7159*100 = 71.59%

0.8841*100 = 88.41%

The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%

8 0

3 years ago

Write the equation for the line shown below in slope-intercept form.

Andrej [43]

The slope form equation is: y=mx+b so once you plug in the numbers available through the diagram you get.

y=3x+4

7 0

3 years ago

Read 2 more answers

Is the line through points P(2,-9) and Q(6, -13) perpendicular to the line through points R(5,-1) and

Kay [80]

Line through P(0, 5) and Q(-1, 8):
slope = m = (y2 - y1) / (x2 - x1) = (8 - 5) / (-1 - 0) = 3 / -1 = -3

line through R(3, 3) and S(5, -1):
slope = m = (y2 - y1) / (x2 - x1) = (-1 - 3) / (5 - 3) = -4 / 2 = -2

Parallel lines have equal slopes. Since the two lines have different slopes, they are not parallel.

8 0

3 years ago