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3 years ago

What is 790.95 rounded to the nearest cubic meter?

Mathematics

2 answers:

Rama09 [41]3 years ago

7 0

.95 would round to 1

so 790.95 would round to 791

Maslowich3 years ago

4 0

The answer is 791 because the 5 after the 9 rounds of up to 10 which adds 1 to the 790

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What is the midpoint of the class 15-20

Furkat [3]

More data can be applied to the frequency distribution table. You can measure the "midpoint" (or "class mark") of each class as: Midpoint = Lower class limit + Upper class limit 2 . . The proportion of the data that falls in that class is the "relative frequency" of each class.

8 0

3 years ago

The proof ABC ≅ DCB that is shown.

Schach [20]

The <em><u>correct answer</u></em> is:

AAS

Explanation:

AAS stands for "angle-angle-side." This states that if two angles and a non-included side of one triangle are congruent to the corresponding two angles and non-included side of another triangle, then the triangles are congruent.

In these triangles, we have ∠CAB ≅ ∠CDB given to us to begin with. Throughout the proof, we find that ∠ABC ≅ ∠DCB. We also have that CB is congruent to itself. This is two angles and a side not included, so this is AAS.

4 0

3 years ago

Read 2 more answers

For women aged 19-24, systolic blood pressures (in mm Hg) are normally distributed with a mean of 114.8 and a standard deviation

Mrac [35]

Answer: p = 0.00714

Step-by-step explanation:

Since the population standard deviation of the distribution is known, the z test ( which produces the z score) is the perfect test for finding the probability of the data set in the question.

From the question,

Population mean (u) = 114.8

Sample mean (x) = 121.5

Population standard deviation (σ) = 13.1

Sample size (n) = 23

The z score formulae is given below as

Z = x - u/σ/√n

Z = 121.5 - 114.8/(13.1/√23)

Z = 6.7/(13.1/√23)

Z = 6.7/2.731

Z = 2.45.

The question is interested in knowing the probability of mean systolic blood pressure greater than 121.5.

This implies that we are looking for the probability at which our z score is greater than 2.45: P(z>2.45)

The z score (z=2.45) has divided the distribution into two regions, z< 2.45 ( area to the left of the distribution) and z>2.45 ( area to the right of distribution).

Hence, p(z>2.45) + p(z<2.45) = 1

To get a the probability, we have to use a standard normal distribution table.

The table we have here gives probability of the distribution to the left ( that's area towards the left), hence we need to find p(z<2.45) first

From the table p(z<2.45) = 0.99286

But p(z>2.45) = 1 - p(z<2.45)

p(z>2.45) = 1 - 0.99286

p(z>2.45) = 0.00714

8 0

3 years ago

A a fraction close to but greater than 1 1/2

Bad White [126]

Answer:

Step-by-step explanation:

1 1/2 = 3/2

6 0

3 years ago

2. Is the mean of the age distribution closer to 15, 20, or 25 years? Explain your answer.

DENIUS [597]

Answer:

the mean of the age distribution is 20

Step-by-step explanation:

Question is

A local utility company wanted to gather data on the age of air conditioners that people have in their homes. The company took a random sample of 200 residents of a large city and asked if the residents had an air conditioner, and if they did, how old it was. Below is the distribution in the reported ages of the air conditioners.

the graph is attached below

find the mean of the age distribution closer to 15, 20, or 25 years

In the given graph the distribution is centered at 20

So the mean of the age distribution is 20

5 0

3 years ago