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3 years ago

Lisa wrote this number: 876,412

2 answers:

8 0

The digit 2 in lisa's number is one, 10 times the value will be in the tens, therefore, you can write any number with 2 on the 10th digit.

examples

201321

520

1216200321

monitta3 years ago

6 0

920,728 it following what you want and it bigger then her number

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A = {x | x is a positive, odd integer less than 7}<br> -1

Lisa [10]

Answer

(5 2) (7 3) 2 3 5 x < x - - x - The inequality is 2 x < 5x 3 -2 – 7x 5 -3 Multiply ... Find all pair of consecutive odd positive integers both of which are smaller than 10 ... Let x be the smaller of the two odd positive integers so that the other is x + 2.

Step-by-step explanation:

3 0

3 years ago

Question 2 (1 point)<br> Which graph shows the solutions to 2x<6?

Studentka2010 [4]

Answer: C
^ because the plot starts on 2, unlike all other choices & it passes 6.

5 0

3 years ago

Read 2 more answers

HELP PLEASE PLEASE :’(

Svet_ta [14]

Practice:

1. A.

2. D. y=5+0.84x-0.03x^2, x>=0

3. B. y=2/x, x>0

Quiz:

1. A C E. (-4,4) (0,0) (6,9)

2. A. y=-1/3x+19/3

3. D. x=2y^2-1, y>=0

4. B. y=3/x^2, x>0

8 0

4 years ago

Of the total population of the United States, 20% live in the northeast. If 200 residents of the United States are selected at r

Snezhnost [94]

Answer:

0.0465 = 4.65% probability that at least 50 live in the northeast.

Step-by-step explanation:

I am going to use the normal approximation to the binomial to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that $\mu = E(X)$ , $\sigma = \sqrt{V(X)}$ .

In this problem, we have that:

$n = 200, p = 0.2$

$\mu = E(X) = np = 200*0.2 = 40$

$\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{200*0.2*0.8} = 5.65685$

Approximate the probability that at least 50 live in the northeast.

Using continuity correction, this is $P(X \geq 50 - 0.5) = P(X \geq 49.5$ , which is 1 subtracted by the pvalue of Z when X = 49.5. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{49.5 - 40}{5.65685}$

$Z = 1.68$

$Z = 1.68$ has a pvalue of 0.9535

1 - 0.9535 = 0.0465

0.0465 = 4.65% probability that at least 50 live in the northeast.

3 0

4 years ago

What is the sector area created by the hands of a clock with a radius of 9 inches when the time is 4:00? 6. 75π in. 2 20. 25π in

Blizzard [7]

The sector area created by the hands of a clock with a radius of 9 inches when the time is 4:00 is 27π square inches. Then the correct option is C.

<h3>What is a circle?</h3>

It is a locus of a point drawn at an equidistant from the center. The distance from the center to the circumference is called the radius of the circle.

The sector area is created by the hands of a clock with a radius of 9 inches when the time is 4:00.

Then the radius (r) is 9 inches and the angle is 120°.

We know that the area of the sector is given by

$\rm Area\ of \ sector = \dfrac{\theta}{360} \pi r^2 \\\\\\Area\ of \ sector = \dfrac{120}{360} \pi * 9^2\\\\\\Area\ of \ sector = 27 \pi$

The sector area created by the hands of a clock with a radius of 9 inches when the time is 4:00 is 27π square inches. Then the correct option is C.

More about the circle link is given below.

brainly.com/question/11833983

3 0

3 years ago