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Lana71 [14]
3 years ago
5

Estimate. Then find the product.

Mathematics
1 answer:
34kurt3 years ago
4 0

Based on the example given, I'm guessing you're supposed to round to the nearest thousand, so that's what I'll do.

2. Round 5339 to 5000, multiply by 6 to get the estimate of  30,000.

3. Round $879 to $1000, multiply by 8 to get the estimate of $8000.

4. Round 3182 to 3000, multiply by 5 to get the estimate of 15,000.

5. Round 4616 to 5000, multiply by 3 to get the estimate of 15,000.

6. Round $2854 to $3000, multiply by 9 to get the estimate of $27,000.

7. Round 7500 to 8000, multiply by 2 to get the estimate of 16,000.

8. Round 948 to 1000, multiply by 7 to get the estimate of 7000.

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Listed below are prices in dollars for one night at different hotels in a certain region. Find the​ range, variance, and standar
Vanyuwa [196]

Answer:

Range = $115

Variance = $1915.2857

Standard deviation = $43.764

Step-by-step explanation:

Given the data:

234 160 119 131 218 207 146 141

Arranging in ascending order :

119, 131, 141, 146, 160, 207, 218, 234

The range = maximum - minimum

The range = 234 - 119 = 115

The variance :

Σ(x - mean)²/n-1

The mean = Σx / n

The mean = 1356 / 8 = 169.5

Variance :

Σ(x - mean)² = (119-169.5)² + (131-169.5)² + (141-169.5)² + (146-169.5)² + (160-169.5)² + (207-169.5)² + (218-169.5)² + (234-169.5)² = 13407

n - 1 = 8 - 1 = 7

Variance = 13407 / 7 = 1915.2857

Standard deviation = √variance

Standard deviation = √1915.2857

Standard deviation = $43.764

8 0
3 years ago
Find the quadratic function that fits curve below. Select the correct answer.
raketka [301]
<h2>Hello!</h2>

The answer is:

The quadratic function that fits the given picture is:

y=-3x^{2}+13x-5

<h2>Why?</h2>

We can solve the problem and find the correct function that fits the curve below by finding which function intercepts the y-axis at -5 (we can see it from the picture), also, we need to look for a function that represents a parabola opening upwards. We need to remember that when a parabola is opening upwards, its quadratic term coefficient is negative.

So, we can see that from the given functions, the only function that represents a parabola opening upwards and its y-intercept is located at y equal to -5 is the second option:

y=-3x^{2}+13x-5

We have that :

a=-3(negative)\\b=13\\c=-5(y-intercept)

We can see that the quadratic term (a) is negative, and the quadratic function intercepts the y-axis at y equal to -5.

Hence, the answer is:

The quadratic function that fits the given picture is:

y=-3x^{2}+13x-5

Have a nice day!

Note: I have attached a picture for better understanding.

4 0
3 years ago
Can someone please help me with this 7th grade math worksheet? I will give BRANLIEST PLEASE HELP
koban [17]

Answer:

sure I'll try to help you oh math

7 0
3 years ago
Read 2 more answers
If a procedure meets all of the conditions of a binomial distribution except the number of trials is not​ fixed, then the geomet
natima [27]

Answer:

Given p = 0.07 as the probability that someone is a universal donor

In case of Geometric Distribution, Probability of  getting the first success on nth trial is given by

P (X=n) = p (1-p) ^ {n-1}

where p is the probability of success on any one trial and (1-p) shows the probability of failure.

So the probability of the first subject to be a universal blood donor will be the seventh person is

P (X=7) = 0.07 (1-0.07) ^ {7-1} = 0.07 (0.93) ^ 6 = 0.07*0.647 = 0.0453

So the final probability is 0.0453

3 0
3 years ago
Freemont Run Club surveyed a random sample of 303030 of their members about their running habits. Of the members surveyed, 999 s
devlian [24]

Answer:

the answer is 25 according to Khan

Step-by-step explanation:

3 0
3 years ago
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