The table below displays the adult literacy rate in Bolivia for several different years. The adult literacy rate is the percentage of people ages 15 and above who can both read and write with understanding a short simple statement about their everyday life.

Data downloaded on 2/19/2020 from https://ourworldindata.org/grapher/literacy-rate-adults?tab=chart&time=1973..2016.
Year 1976 2001 2012
Literacy Rate 63.2% 86.7% 94.5%


When answering the questions below, round to four decimal places in your intermediate computations.

Use interpolation or extrapolation (whichever is appropriate) to predict the literacy rate in Bolivia in 1992. Round your answer to one decimal place. You only get one submission for the unit.

Use interpolation or extrapolation (whichever is appropriate) to predict the literacy rate in Bolivia in 2050. Round your answer to one decimal place. You only get one submission for the unit.

Is your 2050 prediction realistic? You must select all correct responses at the same time to receive credit for this problem. You get two submissions.
Yes, the 2050 prediction is realistic because it is possible for a literacy rate to exceed 100%.
No, the 2050 prediction is not realistic because the literacy rate will not grow at the exact same rate for more than 40 years.
Yes, the 2050 prediction is realistic because it was made using a mathematical formula.
No, the 2050 prediction is not realistic because the literacy rate cannot exceed 100%.

The perimeter of the second park will be 320 feet. The correct option is C.

The perimeter is defined as the sum of all the sides of the object. For a rectangular park, the perimeter will be the sum of all the sides of the rectangular park.

Given that a  park has two rectangular, fenced playgrounds. The first playground has a perimeter of 160 feet.

The perimeter of the first park:-

160 = 2 ( L + W )

L + W = 80

The perimeter of the second park,

P = 2 ( 2L + 2W )

P = 4 ( L + W )

P = 4 x 80

P = 320 feet

Therefore, the perimeter will be 320 feet.

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The presented statement states that the economic profit at units has a numerical value of -512 dollars per unit.

A function is a collection of several statements that work together to complete a job. Every C program we use contains at least one function, which is main (). The programs can then declare a number of extra routines in a language.

Revenue function is R (q) = 7q² + 400q

Differentiate with respect to q

R'(q) = - 7(2q) + 400.......(1)

R'(q) = - 14q + 400

Substitute q = 8 in eqn.(1)

MR(8) = -14(8) + 400

= - 112 + 400

MR(8) = -512 $ per unit

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Answer:

x²-2x-3 using factorisation method

Step-by-step explanation:

x²-3x+1x-3

x(x-3) 1(x-3)

(x+1) (x-3)

x=-1,x=+3

I identified the Atmospheric conditions such as air pressure, temperature, and relative humidity conditions that cause snow, rain, thunderstorms, fog, and clear sky in the lab. I discovered that low-pressure zones typically have snow, rain, and stormy weather, and high-pressure areas typically have foggy or bright weather.

Atmospheric conditions, such as temperature, pressure, humidity, wind direction, and the presence of fronts, greatly influence weather patterns.

Changes in air pressure result in winds, which can transport warm or cold air, moisture, and storms. High humidity leads to clouds and precipitation, while low humidity often results in clear skies.

Note that temperature differences between different air masses can create fronts, which are boundaries separating different air masses, leading to changes in weather.

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Full Question:

"How do atmospheric conditions influence weather patterns?

Answer:

[tex]\displaystyle y=\frac{1}{1-4e^{-x}}[/tex]

Step-by-step explanation:

[tex]\displaystyle y=\frac{1}{1+C_1e^{-x}}\\\\-\frac{1}{3}=\frac{1}{1+C_1e^{-0}}\\\\-\frac{1}{3}=\frac{1}{1+C_1}\\ \\ 3=-1-C_1\\\\4=-C_1\\\\-4=C_1[/tex]

Thus, the specific solution to the IVP given the initial condition is [tex]\displaystyle y=\frac{1}{1-4e^{-x}}[/tex]

The definite integral of a continuous function on an interval [a, b] represents the area under the graph of the function within that interval. It provides a mathematical way to measure the accumulation of change of the function over that interval.

The definite integral of a function f on the interval [a, b] is denoted by ∫f(x)dx over the interval [a, b]. This integral can be approximated by dividing the interval [a, b] into smaller subintervals and calculating the area under the graph of the function over each subinterval. The smaller the subintervals, the closer the approximation will be to the actual definite integral.

The definite integral is said to be a limit, meaning that as the size of the subintervals approaches zero, the sum of the areas under the graph over each subinterval approaches a definite value, which is the definite integral.

In mathematical terms, for each positive number e, there exists a positive number δ such that if the subintervals have width less than δ, then the difference between the sum of the areas under the graph and the definite integral will be less than e. This means that the definite integral provides a precise value for the area under the graph of the function over the interval [a, b].

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Answer:

254in^2

Step-by-step explanation:

(SA)=2lw+2lh+2hw

L -> 9 W ->4 H -> 7

2(9)(4)+2(9)(7)+2(7)(4)

18*4+18*7+14*

72+126+56

198+56

254

Answer: The annual percentage yield (APY) takes into account both the interest rate and the frequency of compounding. It is a measure of the effective rate of return over a year, taking into account the effect of compounding.

In Oxana's account, with a 7.1% interest rate

Step-by-step explanation:

The required function f ∶ R² → R given by f(x, y) = eˣ does not have any local or global extrema.

A global extreme point, also known as a global maximum or minimum, is the highest or lowest value that a function attains over its entire domain. In other words, it is the maximum or minimum value of the function over the whole range of inputs, rather than just a specific interval or region.

Here,

The function f(x, y) = eˣ only depends on x and is not a function of y. This means that it does not have any extrema since its value can be arbitrarily close to zero or arbitrarily close to infinity for different x-values, and therefore it does not attain a maximum or minimum value. This holds both locally and globally.

Thus, the required function f ∶ R² → R given by f(x, y) = eˣ does not have any local or global extrema.

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Answer:

Step-by-step explanation:

2-A

3- trapezium

4 - perpendicular

6- A

The table shows the amounts of each day is attached below.

An equation is an expression that shows the relationship between two or more numbers and variables.

The total amount of snow that falls in three days equals the sum of the amount of snow that falls each day, then

s1 + s2 + s3 = Ts

Here s1 is the snow that fell on day 1, s2 on day 2, s3 on day 3 and Ts is the total amount of snow that fell over the three days.

We need to calculate the amount of snow that fell on the first two days by multiplying the total snow by the given fractions, like this:

s1 = 1/6 * 2 = 1/3

s2 = 7/12*2 = 7/6

Now ,

1/3+ 7/6+ s3 = 2

1.5 + s3 = 2

1.5 - 1.5 + s3 = 2 - 1.5

s3 = 2 - 1.5

s3 = 1/2

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Answer:

The equation of the line passing through the points (4, 2) and (2, 4) is y = -x + 6.

Step-by-step explanation:

Given the points (4, 2) and (2, 4), we can use the point-slope form of a line, which is given by:

y - y1 = m(x - x1)

where (x1, y1) is a point on the line, m is the slope of the line, and (x, y) are the coordinates of any other point on the line.

To find the slope m, we can use the formula:

m = (y2 - y1) / (x2 - x1)

Plugging in the values for the two points, we get:

m = (4 - 2) / (2 - 4) = 2 / -2 = -1

Next, we'll substitute one of the points and the slope into the point-slope form:

y - 2 = -1 (x - 4)

Expanding the right-hand side, we get:

y - 2 = -x + 4

Adding x and 2 to both sides, we get:

y = -x + 6

So, the equation of the line passing through the points (4, 2) and (2, 4) is y = -x + 6.

The monthly payment is ​$453.125.

If the initial amount (also called as principal amount) is P, and the interest rate is R% annually, and it is left for T years for that simple interest, then the interest amount earned is given by:

[tex]I = \dfrac{P \times R \times T}{100}[/tex]

Given;

Amount Financed (P) = $15,000

Annual Percentage Rate (R) = 5%

Number of Payments per Year (N) = 12

Time in Years (T) = 3

Now, monthly payment;

=(p*i*(1+i)^n)/((1+i)^n-1)

=15000(0.05/12)(1+0.05/12)^36/(1+0.05/12)^36-1

= 72.5/0.16

=453.125

Therefore, the monthly payment by 5% interest will be $453.125.

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The required explanation for hypothesis test is described.

When the null hypothesis is true in this setting, it means that the true proportion of students at Mr. Tabor's school who completed their math homework last night is equal to 0.75, or 75%. This is the value that Mr. Tabor initially believed, but the sample data suggests that only 68% of the students completed their homework.

A PP-value is the probability of observing a sample proportion as extreme or more extreme than the sample proportion, given that the null hypothesis is true. In this case, the PP-value of 0.1265 is not small enough to reject the null hypothesis. A commonly used significance level is 0.05, which means that if the PP-value is less than 0.05, the null hypothesis would be rejected.

So, given the PP-value of 0.1265, which is greater than 0.05, we cannot reject the null hypothesis and must conclude that there is not enough evidence to suggest that the true proportion of students who completed their homework is less than 0.75. This means that, based on the sample data, the null hypothesis that the true proportion is equal to 0.75 is not ruled out, and there is not enough evidence to support the alternative hypothesis that the true proportion is less than 0.75.

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The upper critical value to be used in constructing a 94% confidence interval is 1.88.

What is meant by confidence interval?

A confidence interval is a range of estimates for an unknown parameter in frequentist statistics. At a specified level of confidence, a confidence interval is calculated. The mean of your estimate plus and minus the range of that estimate constitutes a confidence interval.

In statistics, confidence is another word for probability. The most typical level of confidence is 95%, however, higher levels, such as 90% or 99%, are occasionally employed.

The confidence interval is given as 94% = 0.94

Based on the normal population, a confidence interval for a population proportion is calculated, and a normal probability table is then used to determine the critical value.

So if the confidence interval is 94%, the rest 6% of the data will be present outside the given confidence interval.

Out of the 6%, 3% of data will be present on either side of the interval.

So the critical value will be the value of [tex]z_{\frac{\alpha }{2} } = z_{0.03 }[/tex] = 1.88.

Therefore the upper critical value to be used in constructing a 94% confidence interval is 1.88.

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In the image you can see some rectangles with different dimensions, to scale.

A rectangle is a geometric figure that is characterized by:

To find the perimeter of a rectangle we must add all its sides. In this case we must illustrate a 20 m rectangle so we can draw the following variants:

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Using the midpoint formula we will see that the coordinates of B are (-9, 1)

We know that for two points (x, y) and (a, b) the midpoint is at:

( (x  + a)/2,  (y + b)/2)

In this case if the coordinates of B are (x, y), we can write the equation:

(-2, 4) = ( (x + 5)/2, (7 + y)/2)

We can solve these two equations to find the coordinates of point B, we will get:

(x + 5)/2 = -2

x + 5 = -4

x = -4 - 5 = -9

And:

(7 + y)/2 = 4

7 + y = 4*2 = 8

y = 8 - 7 = 1

The coordinates of B are (-9, 1)

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The initial investment was $4,176.69

Investment is the dedication of money to purchase of an asset to attain an increase in value over a period of time.

To find initially invested we can use the formula for continuously compounded interest to find the initial investment:

A = Pe^(rt)

Where:

So, solving for P:

P = A / e^(rt)

P = $10,775.05 / e^(0.07 * 17)

P = $10,775.05 / 2.56724943786794

P = $4,176.69

Therefore, the initial investment was $4,176.69.

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Answer:

reflection  over the x axis

vertical stretch of 2

vertical translation down 1 unit

Step-by-step explanation:

-2 [tex]\sqrt[3]{x}[/tex] -1

The negative in front is a reflection  over the x axis

The 2  is a vertical stretch of 2

The subtraction of 1 at the end is  a vertical translation down 1 unit

Answer:

k = 5.6

Step-by-step explanation:

[tex]\frac{10}{7} = \frac{8}{k}[/tex]

Cross-multiplication is applied:

(10)(k) = (8)(7)

   10k = 56

k needs to be isolated and made the subject of the formula:

k = [tex]\frac{56}{10}[/tex]

k = 5.6

Answer: Alicia had 3 feet of wood and she used 3 feet, so she has 3 - 3 = 0 feet of wood left.

Since we are asked to estimate the amount of wood, we could round 3 to the nearest whole number and say that Alicia has approximately 0 feet of wood left.

Step-by-step explanation:

Value of angle x = 70°

Alternate angles are angles that occur on opposite sides of the transversal line and have the same size. There are two different types of alternate angles, alternate interior angles and alternate exterior angles.

Given,

ACD = 35

BCE = 105

ABC = x

By, the figure

BA || CD

⇒ ACD = BAC (alternate angles on AC)

⇒ BAC = 35°

BCE = 105

Exterior angle is equal to sum of two opposite interior angles in the triangle.

BCE = BAC + ABC

105 = 35 + x

x = 105 - 35

x = 70°

Hence,

70° is measure of x.

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The coordinates of the vertex will be (-1/12, 23/24).

ax²+bx+c=0, with a not, equals 0 is a quadratic equation, which is a second-order polynomial equation in a single variable. It has at least one solution because it is a second-order polynomial equation, which is guaranteed by the algebraic fundamental theorem. The answer could be simple or complicated.

Given, a quadratic equation F( x )=6 x²+ x +1

Compared with the general formula of the quadratic equation ax²+bx+c=0,

a = 6

b = 1

c = 1

Solving the equation:

F( x )=6 x²+ x +1

F( x ) - 1 =6 x²+ x

f(x) - 1 = 6(x² + x/6)

f(x) -1 = 6(x² + x/6 + 1/144 - 1/144)

f(x) - 1 = 6(x + 1/12)² - 1/24

f(x) = 6(x + 1/12)² - 1/24 + 1

f(x) = 6(x + 1/12)² + 23/24

From the general formula of a quadratic equation to vertex form will be

F(x) = a(x-h)² + k

h will be -1/12 and k  will be  23/24

therefore, The coordinates of the vertex will be (-1/12, 23/24).

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Answer:

To solve this equation, we need to isolate the variable x on one side of the equation. To do this, we can start by adding 1/2 (12x - 2) to both sides of the equation:

-1/2 (12x - 2) + 1/2 (12x - 2) = -6x - 1 + 1/2 (12x - 2)

Combining like terms on the right side of the equation, we get:

0 = -6x + 12x - 1 + (12x - 2) / 2

Simplifying further:

0 = 6x - 1 + 6x

Combining like terms again:

0 = 12x - 1

Adding 1 to both sides:

1 = 12x

Finally, dividing both sides by 12:

x = 1/12

Step-by-step explanation:

Answer: No solution.

Step-by-step explanation:

1.) Distribute -1/2

-6x + 1 = -6x - 1

2.) Move over terms to combine

0 = -2

There is no solution to this equation.

a)  v(t) = -32t + 80 feet/second  and a(t)= -32 feet/second²

b. t = 3 seconds.

c. 24 feet/second > 0).

d.  the time at which the rock reaches its highest height is 2.5 seconds and 80 feet respectively.

e. the acceleration is given by a(2.5) = -32 feet/second²

The velocity, v(t), of the rock is given by the derivative of the position function s(t) with respect to time,

v(t) = ds(t)/dt = -32t + 80 feet/second.

The acceleration, a(t) = dv(t)/dt = -32 feet/second²

b) v(3) = -32*3 + 80 = 24 feet/second.

This quantity represents the velocity of the rock at t = 3 seconds.

c) At t = 3 seconds, the rock is rising up because the velocity is positive (v(3) = 24 feet/second > 0).

d) the time at which the rock reaches its highest height,

v(t) = 0, we get -32t + 80 = 0, so t = 80/32 = 2.5 seconds.

The height of the rock will be found using the position function s(t), so s(2.5) = -16(2.5)^2 + 80(2.5) = 80 feet.

e) At the highest height, the velocity of the rock is 0, so the acceleration is given by a(2.5) = -32 feet/second².

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The value of the given expression is -6

What is an expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a complete sentence. Any one of the following mathematical operations can be used. A sentence has the following structure: Number/variable, Math Operator, Number/Variable is an expression.

f(-2) value is the value of f(x) when x= -2

From the graph ,

f(-2)= 0

g(7)=2

Given:

 -5 * f(-2) - 3*g(7)

= -5*0 - 3*2

First multiplication ,then subtraction from left to right

= 0- 3*2

=0-6

= -6

So, the value of the given expression is -6

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Answer:

Let's call the number of magazines charged at £1.90 each "x".

So, the number of magazines charged at £1.70 each is "t=70-x".

The total cost of the x magazines is x * £1.90, and the total cost of the t magazines is t * £1.70.

The total bill for all 70 magazines is £124, so we can write an equation:

x * £1.90 + t * £1.70 = £124

x * £1.90 + (70-x) * £1.70 = £124

Expanding the equation, we get:

x * £1.90 + 70 * £1.70 - x * £1.70 = £124

x * £1.90 - x * £1.70 = £124 - 70 * £1.70

x * (£1.90 - £1.70) = £124 - 70 * £1.70

x * £0.20 = £124 - 70 * £1.70

x = (£124 - 70 * £1.70) / £0.20

Now that we have an expression for x, we can use a calculator to solve for it.

x = (124 - (70 * 1.70)) / 0.20 = 40.

So, 40 magazines were charged at £1.90 each and 70 - 40 = 30 magazines were charged at £1.70 each.