Darnell solved a system of equations by graphing. When he graphed the lines,
he saw that the two lines intersected. What should Darnell conclude about the
solution to this system of equations?
There are infinitely many solutions.
There is exactly one solution.
There are exactly two solutions.
There are no solutions.

The null hypothesis assumes that the proportion of college students who believe in extraterrestrial life is the same or lower than the general population

The appropriate null and alternative hypothesis that tests whether the proportion of college students who believe in extraterrestrial life is greater than the general population can be expressed as follows:

Null hypothesis: The proportion of college students who believe in extraterrestrial life is equal to or less than the general population, or

H0: p <= 0.47

Alternative hypothesis: The proportion of college students who believe in extraterrestrial life is greater than the general population, or

Ha: p > 0.47

where p is the true proportion of college students who believe in extraterrestrial life.

In other words, the null hypothesis assumes that the proportion of college students who believe in extraterrestrial life is the same or lower than the general population (i.e., there is no difference between the two populations), while the alternative hypothesis assumes that the proportion of college students who believe in extraterrestrial life is higher than the general population.

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Answer: The number of ways to form a group of 5 students from a class of 20 students is calculated using the combination formula:

C(20,5) = 20! / (5! * (20-5)!) = 15504

So, there are 15,504 different ways in which 5 students can form a group.

Step-by-step explanation:

Answer:

no answer

soory

Step-by-step explanation:

The constant of proportionality for this relationship is the circumference of the wheel.

A proportional relationship between two variables means that the ratio of the two variables is constant. In other words, if the independent variable (time in this case) increases, the dependent variable (the amount of money Steven charges) will increase proportionally.

The distance a wheel can travel is proportional to its radius.

wheel radius(in.)      distance in 4 revolutions (in.)

4                                    32π

3.5                                 28π

0.25                               2π

The distance a wheel can travel in one revolution is equal to the circumference of the wheel. So, if we know the radius of the wheel, we can calculate its circumference using the formula:

circumference = 2π × radius

Then, we can use the circumference to find the distance the wheel can travel in a given number of revolutions by multiplying the circumference by the number of revolutions. In the table provided, we can see that for each wheel radius, the distance traveled in 4 revolutions is a multiple of the circumference of the wheel, which confirms that the constant of proportionality is the circumference.

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Answer:

11 inches

Step-by-step explanation:

If its cubic inches, we just need to cube root it

Plug it into the calculator and you get a number that rounds up to 11

Reasoning is because it is cubic, so to find the distance which is a normal number, you need to cube root it

The table to explain the equation will be:

x (minutes) y (altitude, in feet) Worked-out equation

0                          300                 -10x + 300 = 300

5                              250                   -10x + 300 = 250

8                         220                         -10x + 300 = 220

10                         200                   -10x + 300 = 200    

30                     0                         -10x + 300 = -0

An equation simply has to do with the statement that illustrates the variables given. In this case, it is vital to note that two or more components are considered in order to be able to describe the scenario

I used the equation y = -10x + 300 to find the altitude of the airplane for each x value.

The altitude after 5 minutes is 250 feet and 0 after 30 minutes.

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The slope between the points is same, hence the points lie on the same line. The point (2, 3) does not lie on the graph of y = 3x - 4.

A line's steepness and direction are measured by the line's slope. Without actually using a compass, determining the slope of lines in a coordinate plane can assist in forecasting whether the lines are parallel, perpendicular, or none at all.

Any two different points on a line can be used to calculate the slope of any line. The ratio of "vertical change" to "horizontal change" between two different locations on a line is calculated using the slope of a line formula.

The given points are, (1,3) (4,2) (-2,4):

Calculate the slope of the line formed by the points.

The slope of the line is given by:

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

For (1,3) (4,2):

m = (2 - 3) / (4 - 1) = -1/3

For (4,2) (-2,4):

m = (4 - 2) / (-2 - 4) = 2/ -6 = -1/3

The slope between the points is same, hence the points lie on the same line.

The equation of the graph is:

y = 3x - 4

The given point is (2, 3):

Substituting the point in the equation:

3 = 3(2) - 4

3 = 6 - 4

3 = 2

False.

Hence, the point (2, 3) does not lie on the graph of y = 3x - 4.

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Mackenzie's reimbursement for a business trip would be $736.50 per mile when she drives of a total of 982 miles with $0. 75 per mile.

Mackenzie's reimbursement for driving 982 miles for business can be calculated by multiplying the number of miles driven by the reimbursement rate per mile.

Mackenzie's company reimburses her $0. 75 per mile which is rate per mile.

Reimbursement = miles driven x rate per mile

Filling the value in above equation.

So,

Reimbursement = 982 miles x $0.75/mile

Reimbursement = $736.50

Therefore, Mackenzie's reimbursement for driving 982 miles with the rate of $0. 75 per mile for business would be $736.50.

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The total volume in centiliters is 5 cL, then the correct option is A.

Here we know that Dante mixes 30 mililiters of one liquid with 2 centiliters of a second liquid, and we want to find the total volume in centiiters.

We know that:

1 milliliter = 0.1 centiliters.

Then:

30 mililiters = 30*( 0.1 centiliters) = 3 centilters.

Then the sum of the two volumes is:

3 centiliters + 2 centiliters = 5 centiliters.

Then the correct option is A.

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The answer is A. 5 cL.

Liquid is one of the three states of matter, alongside solid and gas. It is a form of matter that has a definite volume, but not a definite shape. Liquids take the shape of their container and are able to flow and be poured.

First, we need to convert 30 milliliters to centiliters, which is 3 centiliters (since 1 centiliter = 10 milliliters).

Then, we can add the 3 centiliters to the 2 centiliters of the second liquid to get a total of 5 centiliters.

Therefore, the answer is A. 5 cL.

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The arc length and the sector area are l = 0.25πr and A = (πr²) / 8.

The sector is essentially a section of a circle, and it may be described using the following three criteria:

The area of a disc that is surrounded by two radii and an arc is known as a circular sector.

The circle is divided into the Main Sector and the Minor Sector by a sector.

The region with a lesser extent is referred to as the Minor Sector, whereas the territory with a larger area is referred to as the Major Sector.

The arc length is given as:

l = α/360 (2πr)

The angle is 45 degrees thus,

l = (45/360)(2πr)

l = 0.25πr

The sector area is given as:

A = α/360 (πr²)

A = 45/360 (πr²)

A = (πr²) / 8

Hence, the arc length and the sector area are l = 0.25πr and A = (πr²) / 8.

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According to the information, the area of this quadrilateral, trapezoid is 42 cm.

To calculate the area of the figure we must first graph it. Once we have found its shape we must identify what type of quadrilateral it is, in this case we can affirm that it is a right trapezoid.

On the other hand, to calculate its area we must divide the figure in two, one part would be the quadrilateral and the other the triangle. So we need to find the area of both shapes and then add them.

So the total area would be 42cm²

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The correct answer is C. The Mode.

Data is the collection of data term that is organized and formatted in a specific way it's typically contains fact observation or statistics that are collected through a process of measurement or research data set can be used to answer question and help make informed decision they can be used in a variety of ways such as to identify trends on cover patterns and make prediction.

This measure of centre is most meaningful when the data is qualitative because it shows the value that appears most frequently in the data set. The mode can be used to identify the most popular item or most commonly occurring outcome. It is the only measure of centre that can be used for qualitative data, as the other measures (mean, median, and range) require numerical data.

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1. 1/6 is the probability of rolling a five on the next roll.

2. The probability of getting 5 fives in a row when rolling a single die is  1/7776 .

3.  1/38 is he probability of 7 coming up on the very next spin is

4. 1/54782 is the probability of getting three 7's in a row on a roulette wheel.

5.  (1/10)⁶ is the probability of getting a 1 on all six trials.

6. 1/36 is the probability of getting a pair of sixes when rolling a pair of dice is

7.  The probability of getting any pair is 1/6

It is a branch of mathematics that deals with the occurrence of a random event.

1. The probability of rolling a five on a single roll of a fair die is 1/6, since there are six equally likely outcomes: rolling a 1, 2, 3, 4, 5, or 6.

the probability of rolling a five on the next roll is still 1/6, regardless of whether the previous rolls resulted in four fives in a row or not.

2. The probability of getting a five on a single roll of a fair die is 1/6, as there are six equally likely outcomes.

the probability of getting 5 fives in a row when rolling a single die is:

(1/6) × (1/6) × (1/6) × (1/6) × (1/6) = 1/7776

3. The probability of any particular number coming up on a single spin of an American roulette wheel with 38 numbers is 1/38, since there are 38 equally likely outcomes.

As these are independent , the probability of 7 coming up on the very next spin is still 1/38.

4. The probability of getting three 7's in a row on a roulette wheel is:

(1/38) × (1/38) × (1/38) = 1/54,872

5. The probability of generating a 1 on a single trial is 1/10.

The probability of getting a 1 on a single trial by itself six times

(1/10)  × (1/10)  × (1/10)  × (1/10) × (1/10)  × (1/10) = (1/10)⁶

The probability of getting a 1 on all six trials is (1/10)⁶

6.

The probability of getting a pair of sixes when rolling a pair of dice is:

1/36

7.

The probability of getting any pair when rolling a pair of dice is:

Number of ways to get a pair / Total number of possible outcomes

= 6 / 36

= 1 / 6

So the probability of getting any pair is 1/6

Hence,

1. The probability of rolling a five on the next roll is 1/6.

2. 1/7776 is the probability of getting 5 fives in a row when rolling a single die.

3. The probability of 7 coming up on the very next spin is  1/38.

4. The probability of getting three 7's in a row on a roulette wheel is 1/54782

5. The probability of getting a 1 on all six trials is (1/10)⁶

6. The probability of getting a pair of sixes when rolling a pair of dice is:

1/36

7.  the probability of getting any pair is 1/6

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The Solution using two methods are 323, .291, the correct option is B`.

Probability of an event is a measurement of how likely an event can occur as an outcome of a random experiment.

Probability ranges from 0 to 1, both inclusive. Events whose probability is closer to 0 are rarer to occur than those whose probabilities are closer to 1 (relatively).

When converted to percentage, we just need to multiply its decimal representation by 100. In percentage form, the probability ranges from 0% to 100%.

Given;

Frank is a champion fish charmer who can charm fish with .62 probability of success

He attempts to charm 100 fish, what's the probability he'll charm

between 60 and 80 inclusive

Now, probability out of 100

=62

This is between 60 and 80

So, 323

Therefore, the probability will be 323 and .291

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Answer:it guarantees that people can all read and solve a problem in the same way.

Step-by-step explanation:

Answer: Parallelogram angles add up to 360, so use angle properties and known measures.

Step-by-step explanation:

Answer:

y- intercept = 4

Step-by-step explanation:

the y- intercept is the value of y on the y- axis where the line crosses.

the line crosses the y- axis at 4

then y- intercept = 4

If there are 450 grams of element and half life is 8 minutes, then it will take 28.83 minutes the element to decay to 37 grams

Half life of radio active element = 8 minutes

Initial quantity of radio active element = 450 gram

Final quantity of radio active element = 37 grams

y = a(0.5)^(t/h)

Substitute the values in the equation

37 = 450 (0.5)^(t/8)

Move 37 to left hand side of the equation

37 / 450 = 0.5^(t/8)

Convert the terms to logarithm

t/8 = [tex]log_{0.5}\frac{37}{450}[/tex]

t/8 = 3.60

t = 8 × 3.60

Multiply the numbers

t = 28.83 minutes
Therefore, the it will take 28.83 minutes to decay to 37 grams

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The equivalent expression by combining like terms is 0.57b

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we substitute the same value(s) for the variable(s).

In order to write an equivalent expression by combining like terms, subtract 0.43b from b (Note: b = 1b). That is:

b-0.43b = 0.57b

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the first choice is the right answer

please check my working for guidance

In linear equation, 242 can the population increase without the city going over budget if they have $5 million for a new library building .

Which equation is linear equation?

An algebraic equation with simply a constant and a first-order (linear) term, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.

                                    The variables in the previous sentence, y and x, are referred to as a "linear equation with two variables" at times.

      Substitute the value of s into formula for P -

                   P = ( 3(5-2)) 5/2 - 1

                    = (3(3))5/2 - 1

                  P = 95/2 - 1

                 P = 243 - 1

                     = 242

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Answer:

Step-by-step explanation: The temperature at Thabana dropped by 7 degrees, so we can calculate the night temperature by subtracting 7 from the original temperature of 6 degrees:

Step 1: Subtract 7 from 6:

6 - 7 = -1

Step 2: The night temperature will be -1 degrees.

Answer:

length = 12 feet , area = 72 ft²

Step-by-step explanation:

the perimeter (P) is the sum of the 4 sides of the rectangle.

let w be width then length is 2w

opposite sides of a rectangle are congruent , so

P = 2(2w) + 2w = 4w + 2w = 6w

given P = 36 , then

6w = 36 ( divide both sides by 6 )

w = 6

then

length = 2w = 2 × 6 = 12 feet

the area (A) of a rectangle is calculated as

A = length × width = 12 × 6 = 72 ft²

Neglecting friction, a similar ride with 12 passengers aboard would take 6 minutes.

The time it takes for a roller coaster ride is directly proportional to the mass of the passengers. If we assume that each passenger has the same mass, then the time it takes for the ride is proportional to the number of passengers.

Let T1 be the time for the ride with 6 passengers, and T2 be the time for the ride with 12 passengers. Then, we have:

T2 = (12/6) * T1

Simplifying this expression, we get:

T2 = 2 * T1

We are given that T1 = 3 minutes, so we can substitute this value into the equation above to find T2:

T2 = 2 * 3 minutes = 6 minutes

Therefore, a similar roller coaster ride with 12 passengers aboard would take 6 minutes, as opposed to the 3 minutes it takes with 6 passengers aboard. The answer is 6 minutes.

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Answer:

58

Step-by-step explanation:

4234 = 73x divide by 73 on both sides and x=58

Answer: C and D are the correct ones

Step-by-step explanation:

Answer:

Step-by-step explanation:

The expression that represents the area of a rectangle with length (l) and width (w) is given by:

A = l * w

Therefore, the expression that represents the area of a rectangle with a length of ( + ) and a width of ( − ) can be represented as:

A = ( + ) * ( − ) = + × − = + (−) = −.

1)

it took

25 min : 35 mile

?? min : 70 mile

cross multiply we get 50 minutes

25 x 70 then divide by 35

2) we used:

4 cups : 90 batches

? cups. : 112.5 batches

cross multiply we get: 5 cups

112.5 x 4 then divide by 90

By using a system of equations of two variables the number of short answer problems is 10.

Total number of problems in the Test = 30

Maximum points of test = 50

Point of multiple choice = 1

Point of short answer problems = 3

Let the number of multiple choice questions is x and the number of short answer problems is y

So, x + y = 30    - (1)

and 1.x + 3.y = 50 ⇒ x + 3y = 50      -(2)

Equation (2) - Equation (1)

x + 3y - (x + y) = 50 - 30

2y = 20

y = 10

Put y = 10 in equation (1)

x = 30 - 10 = 20

Hence, the number of multiple-choice questions = 20 and the number of short answer problems = 10.

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