**Answer:**

** 1.704 x 10⁹ people**

**Step-by-step explanation:**

Population of China = 1.381 x 10⁹

Population of US = 3.23 x 10⁸

**Problem: **

Number of people in both countries combined = ?

**Solution**

To solve this problem, simply add them together;

Let us make the exponents the same for easy addition;

Population of China = 1.381 x 10⁹ = 13.81 x 10⁸

Poplation of US = 3.23 x 10⁸

Adding both:

(13.81 x 10⁸) + (3.23 x 10⁸)

⇒ (13.81 + 3.23) x 10⁸

⇒ 17.04 x 10⁸

⇒** 1.704 x 10⁹**

A set of history exam scores are normally distributed with a mean of 83.2 points and a standard deviation

of 8 points.

What proportion of exam scores are between 82 and 89.2 points?

You may round your answer to four decimal places.

Answer: .3330

Step-by-step explanation:

The **proportion **of exam scores are between 82 and 89.2 points is 0.3330.

The term "**standard deviation**" (or "") refers to a **measurement **of the **data's dispersion **from the mean. A low **standard deviation **implies that the **data **are **grouped **around the **mean**, whereas a **large** **standard **deviation shows that the data are **more dispersed**.

When **comparing** **data sets **that may have the same **mean **but a **different **range, it is helpful.

The **mean** of the two numbers 15, 15, 15, 14, 16 and 2, 7, 14, 22, 30 for instance, is the same. The second, though, is obviously more dispersed.

Given:

**mean **= 83.2 points and

**standard deviation **= 8 points.

So, the **proportion** is

P(82 ≤ x ≤ 89.2)

=P( 82- 83.2 / 8 ≤ z ≤ 89.2 - 83.2/8)

=P (0.75) - P(-0.15)

=0.7734 -(0.4404)

= 0.3330

Learn more about **standard** **deviation **here:

https://brainly.com/question/13905583

#SPJ2

PLS HELP!! According to the following diagram, which two options form a pair of opposite rays?

Ello there mate hows it going? I have done geometry and parlinguals along with alegbra! I am certified as a college professor and am willing to help ya!

PLEASE THANK ME RATE MY QUESTION 5 STARS AND MARK ME BRAINLIEST for my extrodinary and overly qualified help!

A,C

yours,

a soon to be brainliest

At a grocery store, you want to buy 2 9/10 lb of. What decimal should the digital scale show?

**Answer:**

2.9

**Step-by-step explanation:**

Hope this helps:)

Which expression shows the COMMUTATIVE PROPERTY of addition?

A. 3 + 5 + 2 = 3 + (5 + 2)

B. 3 + 5 + 2 = 8 + 2

C. 3 + 5 + 2 = 5 + 2 + 3

D. 3 + 5 + 2 = 10

**Answer:**

C

**Step-by-step explanation:**

Commutative property means to add in a different order.

g The company charges a flat fee of $20 plus $0.48 for every mile the car is driven. Find the cost c c of renting a car from Rent-A-Wreck for a day when x x number of miles are driven.

Answer:

The cost for day when x miles are driven is

C = 0.48x + 20

Step-by-step explanation:

Firstly, we shall need to write an equation that represents the rent age

Let C be the cost and m is the number of miles driven

C = 20 + 0.48m

So given that x miles are driven, then m = x

This implies = 20 + 0.48x

Check the statements that are true.

A. An arithmetic sequence is a linear function whose domain is restricted to the set of non-negative integers.

B. A geometric sequence is a linear function whose domain is restricted to the set of non-negative integers.

C. An arithmetic sequence is an exponential function whose domain is restricted to the set of non-negative integers.

D. A geometric sequence is an exponential function whose domain is restricted to the set of non-negative integers.

**Answer:**

A and D.

**Step-by-step explanation:**

A sequence is a set of the objects or numbers in a specific order. It is a function whose domain is a set of natural numbers or non-negative integers i.e. {1, 2, 3,..}

(**A**)

"An arithmetic sequence is a linear function whose domain is restricted to the set of non-negative integers."

The general form an arithmetic sequence is:

[tex]a_{n}=a_{1}+(n-1)d[/tex]

The function is linear. The sequence consists of either numbers that are increasing or decreasing based on the value of *d*, the common difference.

So, the statement provided is **True**.

(**D**)

"A geometric sequence is an exponential function whose domain is restricted to the set of non-negative integers."

The general form an geometric sequence is:

[tex]a_{n}=a_{1}\cdot r^{n-1}[/tex]

The function is exponential. The sequence consists of either numbers that are exponentially increasing or decreasing by the factor *r*, the common ratio.

So, the statement provided is **True**.

Evaluate the expression when b= 2.

12 - b =

Answer: 10

12-b

Substitute 2 in for b

12-2

Subtract

10

12-b

Substitute 2 in for b

12-2

Subtract

10

**Answer:**

Well, if **b = 2**, then **12 - b = 10**

**Step-by-step explanation:**

hope this helps, lol! <3

12 apples to 8 oranges

12:8 is the ratio if that’s the question

What’s the y intercept

The y intercept is where the function intersects the y-axis.

**Answer:**

y-intercpet is In analytic geometry, using the common convention that the horizontal axis represents a variable x and the vertical axis represents a variable y, a y-intercept or vertical intercept is a point where the graph of a function or relation intersects the y-axis of the coordinate system. As such, these points satisfy x = 0.

For each of these intervals, list all its elements or explain 2.1 Sets 131 why it is empty. a) [a,a] c) (a, a] e) (a,b), where a > b b) [a,a) d) (a, a) f) [a,b],wherea>b

Answer: b

Step-by-step explanation:

How do you describe a quadratic equation?

**Answer:**

an equation of the second degree, meaning it contains at least one term that is squared.

**Step-by-step explanation:**

A quadratic equation contains at least one term that is squared. The standard form is ax² + bx + c = 0 with a, b, and c being constants, or numerical coefficients, and x is an unknown variable.

- 1 1/5 as improper fraction

The given - 1 1/5 expressed as improper fraction can be written as - [tex]\frac{6}{5}[/tex]

Anwe were given [tex]\frac{1}{5}[/tex]-1 /5 so to express this as ** improper fraction**, we multiply the whole number with the denominator then add to the numerator then we have

[tex]\frac{-6}{5}[/tex]-

Therefore, the improper fraction of the given figure is [tex]\frac{-6}{5}[/tex]

Learn more at: https://brainly.com/question/14549871?referrer=searchResults

I just need some one to explain how to do it ,

**Answer:**

f(x) = (x^2-16) / (x+3)

f(x) has no horizontal asymptote.

Vertical assymptote is x = -3

Dividing the numerator by the denominator gives x - 3 remainder -7. Therefore, the oblique assymptote is x - 3.

the vertical asymptotes of the function f(x) = (5x + 1) / (x^2 + x - 6) = (5x + 1)/(x - 2)(x + 3) is x = 2 and x = -3.

the zeros of the function f(x) = (3x^2 - 3x - 6 ) / (3x - 6) = (3x^2 + 3x - 6x - 6) / (3x - 6) = (3x(x + 1) - 6(x + 1)) / (3x - 6) = (3x - 6)(x + 1)/(3x - 6) = x + 1 is x = -1

the function f(x) = (x^2 + x - 12) / (x - 3) = (x - 3)(x + 4) / (x - 3) is --> disc = 3, x-int = (-4, 0), y-int = 4? basic shape = straight line

**Step-by-step explanation:**

Hope this helps! brainliest please

The homoskedasticity-only F-statistic and the heteroskedasticity-robust F-statistic typically are:

**Answer:**

The homoskedasticity-only F-statistic and the heteroskedasticity-robust F-statistic typically are different.

**Step-by-step explanation:**

An F statistic is a value derived by running an ANOVA test or a regression analysis to find out if the means between two populations are significantly different.

The homoskedasticity-only” F-statistic is derived by running two regressions, one under the null hypothesis and one under the alternative hypothesis. If the “unrestricted” model fits sufficiently better, reject the null.

In the first regression, the restricted regression (the null hypothesis) is forced to be true. This is the regression in which all the coefficients are set to zero; the relevant regressors are excluded from the regression. In the second regression, the unrestricted regression, the alternative hypothesis is allowed to be true. If the sum of squared residuals is sufficiently smaller in the unrestricted than the restricted regression, then the test rejects the null hypothesis

The heteroskedasticity-robust F-statistic is built in to STATA (“test” command); this tests all q restrictions at once.

The homoskedasticity-only F-statistic is important historically (and also in practice), and can help intuition, but isn’t valid when there is heteroskedasticity

write equivalent fractions for 3 2/3 and 1 4/5 using 15 as the common denominator

**Answer:**

3 2/3 will be 3 10/15

1 4/5 will be 1 12/15

Divide 3 into 15 and get 5; 5 x 2 = 10

Divide 5 into 15 and get 3; 3 x 4 = 12

So new equivalent fractions are 3 10/15

and 1 12/15

**Step-by-step explanation:**

The required **equivalent fractions **for 3 10/15 and 1 12/15.

Given, two mixed fractions 3 2/3 and 1 4/5, determine equivalent fractions using 15 as the common denominator.

What is simplification?The **process **in mathematics to **operate **and **interpret **the function to make the **function **or expression simple or more **understandable **is called simplifying and the process is called **simplification**.

Here,

First

= 3 2/3

= 3 + 2 / 3

= 3 + 2 × 5 / 3 × 5

= 3 + 10 / 15

Second,

= 1 4 / 5

= 1 4 × 3 / 5 × 3

= 1 12/15

Thus, the required **equivalent fractions **for 3 10/15 and 1 12/15.

Learn more about **simplification **here: https://brainly.com/question/12501526

#SPJ3

The coordinates below lie on the line with the given slope. find the missing coordinate value. (2,2) (5,y) slope = 2

**Step-by-step explanation:**

Hey there!

The given points are; (2,2) and (5,y).

Slope (m) =2

Using formula for slope, we get;

[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]

Put all values.

[tex]2 = \frac{y - 2}{5 - 2} [/tex]

Simplify it to get value of"y".

[tex]2 = \frac{y - 2}{3} [/tex]

[tex]6 = y - 2[/tex]

[tex]y = 6 + 2[/tex]

Therefore, y= 8.

*Hop**e** it** helps**.**.**.*

The temperature at 2:00 AM was -15° Fahrenheit. The temperature rose by 3 ° each hour. What was the temperature at 6:00AM?

**Answer:**

9 degrees farenehit

**Step-by-step explanation:**

=====================================================

Explanation:

x = number of hours since 2 AM

y = temperature in degrees Fahrenheit

The starting temperature is -15 degrees, so the y intercept is b = -15.

The temperature goes up 3 degrees each hour, so the slope is m = 3

The equation is y = 3x-15

Now plug in x = 4 since 6 AM is four hours after 2 AM.

We get the following

y = 3x-15

y = 3*4-15

y = 12-15

**y = -3**

**The temperature at 6 AM is -3 degrees Fahrenheit.**

-------------------------

Check:

Start at -15 and add 3 for each hour

It might help to make a number line.

2 AM = -15 degrees

3 AM = -12 degrees

4 AM = -9 degrees

5 AM = -6 degrees

**6 AM = -3 degrees**

This confirms the answer.

guys what is 265 divided by 53

**Answer:**

5

**Step-by-step explanation:**

265/53= 5

**Answer:**

265÷53=5

**Step-by-step explanation:**

just get a calculator

What is the relationship between x and 86?

**Answer:**

C

**Step-by-step explanation:**

**Answer:**

alternate exterior angles

**Step-by-step explanation:**

Helpp thanksssss........

**Answer:**

4/10

**Step-by-step explanation:**

4/5 ÷ 2/1

4/5 * 1/2

2/5 or 4/10

A normal population has mean =μ7 and standard deviation =σ5. (a) What proportion of the population is less than 18?

Answer:

P(x< 18) = 0.986

Step-by-step explanation:

Step 1: find the z-score using the formula, z = (x - µ)/σ

Where,

x = randomly chosen values = 18

µ = mean = 7

σ = standard deviation = 5

Proportion of the population that is less than 18 = P(x < 18)

Plug in the values into z = (x - µ)/σ, to get z-score.

z = (18 - 7)/5

z = 11/5 = 2.2

Step 2: Find P(x< 18) = P (z<2.2) using z-table.

The probability that corresponds with z-score calculated is 0.986.

Therefore,

P(x< 18) = 0.986

I don't understand with this question, can you help me with this pls?

**Answer:**

By moving the decimal at the end of the number to the correct amount of places for x 10 you move it once to the right for x 100 you move it right twice.

**Step-by-step explanation:**

Assuming part a is correct, how do you do b and c?

**Step-by-step explanation:**

B. Yes, we are 99% confident that the population mean is within the interval.

C. Yes, 225 is below the interval minimum, so it is reasonable to conclude the average cholesterol level is greater than 225 mg/dl.

D. No. Increasing the sample size would decrease the margin of error, so the ends of the interval would move closer to the sample mean of 251.9. So the interval minimum would still be higher than 225.

miles say that, when a is any integer greater than 0, the value of a^-3 is always less than -a^3 because the exponent in a^-3 is less than the exponent in -a^3. is miles reasoning correct?

Yes, Miles is correct.

Write an equation in point-slope form for the line that is parallel to y = 3/4x -

3 and passes through point (4,3).

**Answer:**

**The point-slope form of the equation of the parallel line is y - 3 = **[tex]\frac{3}{4}[/tex]** (x - 4)**

**Step-by-step explanation:**

Parallel lines have the same slopes and different y-intercepts

The slope-intercept form of the linear equation is **y = m x + b**, where

The point-slope form is of the linear equation is **y - y1 = m(x - x1)**, where

∵ The equation of the given line is y = [tex]\frac{3}{4}[/tex] x - 3

→ Compare it with the first form of the equation above

∴ m = [tex]\frac{3}{4}[/tex]

∴ The slope of it is [tex]\frac{3}{4}[/tex]

∵ Parallel lines have the same slopes

∴ The slope of the parallel line is [tex]\frac{3}{4}[/tex]

∵ The point-slope form is y - y1 = m(x - x1)

→ Substitute the value of the slope in the form of the equation above

∴ y - y1 = [tex]\frac{3}{4}[/tex] (x - x1)

∵ The line passes through the point (4, 3)

∴ x1 = 4 and y1 = 3

→ Substitute them in the equation above

∴ y - 3 = [tex]\frac{3}{4}[/tex] (x - 4)

∴ **The point-slope form of the equation of the parallel line is **

** y - 3 = **[tex]\frac{3}{4}[/tex]** (x - 4)**

diride 660cm in the ratio of 5:6

**Answer:**

*Thus, the measure 660 cm is divided into 300 + 360 in the ratio of 5:6*

**Step-by-step explanation:**

Equations

We are required to divide 660 cm in the ratio 5:6, or 5/6.

Let's call:

x = first part of 660

660 - x = second part of 660

The ratio between them is 5/6.

[tex]\displaystyle \frac{x}{660-x}=\frac{5}{6}[/tex]

The above equation will result in x as the smaller part of 660.

Multiply by (660-x)*6 to eliminate denominators:

[tex]\displaystyle (660-x)*6\cdot\frac{x}{660-x}=(660-x)*6\cdot\frac{5}{6}[/tex]

Operating:

[tex]6x=(660-x)*5[/tex]

[tex]6x=3300-5x[/tex]

Simplifying:

[tex]6x+5x=3300[/tex]

[tex]11x=3300[/tex]

Solving:

[tex]\displaystyle x=\frac{3300}{11}=300[/tex]

The other part is 660 - 300 = 360

**Thus, the measure 660 cm is divided into 300 + 360 in the ratio of 5:6**

HELP EASY ASAP MULTIPLE CHOICE

**Answer:**

It's the first one 18/3 =6

**Step-by-step explanation:**

This is the only answer that has all integers or whole numbers. Hope this helps!

**Answer:**

Its the fisrt one cause its the only one with a whole number.

**Step-by-step explanation:**

Question 6 of 10

What is the effect on the graph of f(x) = 1 when it is transformed to

g(x) = } - 7?

A. The graph of f(x) is shifted 7 units to the right.

B. The graph of f(x) is shifted 7 units down.

C. The graph of f(x) is shifted 7 units to the left.

O D. The graph of f(x) is shifted 7 units up.

SIR

**Answer:**

D I'm pretty sure

**Step-by-step explanation:**

**Answer:**

Its B. i just did this question.

**Step-by-step explanation:**

A study conducted in year 2002 found that the mean number of children under 18 per household in a certain community was 1.7. A statistician is trying to determine whether this number has changed in the last 6 years. She declares the null and alternative hypotheses to be: Null: The mean number of children per household in 2002 is equal to 1.7; Alternative: The mean number of children per household in 2002 is not equal to 1.7. Which of the following statements is true about this test?

a. This is a step-tailed test.

b. This is a left-tailed test.

c. This is a two-tailed test.

d. This is a right-tailed test.

**Answer:**

c. This is a two-tailed test.

**Step-by-step explanation:**

When the rejection region is divided between the two tails of the sampling distribution of the test statistic the test is referred to as two tailed or two sided test. In this case the alternative is set up as

Ha : u≠ 1.7

meaning that values both larger and smaller than u are to be included.

When the alternative hypothesis has the "not equal to sign" it gives the two tailed test.

Tell whether the sum is positive, negative, or zero without adding them.

-8 + 20

**Answer:**

The sum is positive.

**Step-by-step explanation:**

The 20 is a far greater value than -8, so no matter what, when you add them the sum will be positive. Though this would not be the same were the -8 greater than -20.

Hope this helps!

There are 12 months in a year and 52 weeks in a year. What is the ratio of months to weeks in one year? A 6/27 B 3/13 C. 13/3 D. 27/6
Emic and etic are referred to asA. HomonymsB. Types of material cultureC. PerspectivesD. Populations
y - 6 = 4(1 4)WWhich of the following shows a graph of the equation above?rr+ Y862-21:X-E268 x-2FoW.X.VYxYz.
convet one solar day into second
please help asapppppppppppppp
Write the equation of a line in point Slope form that passes through the points (-8,-3) and (2,2)
Bristo Corporation has sales of 1,750 units at $40 per unit. Variable expenses are 30% of the selling price. If total fixed expenses are $39,000, the degree of operating leverage is:
simplify -4/3 divided by 2/-6
PLEASE ANSWER I HAVE 10 MINUTES!!!
While washing her hair, Olivia noticed that she was losing a lot of hair. She visited a clinic, and the physician reassured her that her hair would grow back. How do you think Olivia's hair will grow back?
Is it possible to have a cell without a membrane?
Which desert covers half of Uzbekistan?
Heeeeeeeeeeeeeeeeeeeelp asap due today at 7
What is another name for an animal that is only a primary consumer? will give brainliest!!!!
why induced EMF is known as back EMF
Early in November, it was 37 O F on a particular day. The temperature has dropped 2 O F every day since then. It is now -11 O F. How many days have passed since it was 37 O F outside?
if 1 bag of popcorn would fill 2 paper bags, and i have 24 bags of popcorn, how many paper bags do i have? ( please help!! urgent aahhh )
20. The consumer price index was 120 in 2013 and 126 in 2014. The nominal interest rate during this period was 8 percent. What was the real interest rate during this period? A) 3 percent B) 2 percent C) 3.3 percent D) 5.2 percent E) 12.8 percent
Find the set of solutions for the linear system Use s1, s2, etc. for the free variables if necessary. ,
Synthesis1 pointBalance the following chemical equation. What are the final coefficientsstarting from the left and going to the right? *AICI:+H2O_Al(OH)3 +1,1,1,11, 2, 1, 22, 2, 2, 2.1,3,1,3