Select the correct answer. A model rocket was launched from the top of a building. The rocket's approximate height can be modeled by the quadratic equation h = -4.9t2 + 53.9t + 127.4, where h is the rocket's height, in meters, after t seconds. When factored, this equation is h = -4.9(t - 13)(t + 2). What is a reasonable time for it to take the rocket to land on the ground? Answer A 11 seconds Answer B 13 seconds Answer C 2 seconds Answer D 15 seconds

To find the equation of a line, you need to use the formula [tex]m=\frac{y-y_0}{x-x_0}=\frac{rise}{run}[/tex] to find the slope first.

To find the respective points that we need to plug into this formula, we need to use the axes and their values.

We can see that the first point (point on the left) has a position of (-1, -1). For the second point, we see that it has a position of (5, 1).

** remember, whenever you find the position of a point, it's always (x, y). Now that we have our values, we can plug and chug!

[tex]m=\frac{y-y_0}{x-x_0}\\m= \frac{1-(-1)}{5-(-1)} \\m=\frac{1+1}{5+1} \\m=\frac{2}{6} \\m=\frac{1}{3}[/tex]

So your answer should be 1/3 for your slope.

Now you need to find your y intercept, or what y will equal if x = 0. We can find this by using the information we now have. Remember, the equation for a linear line is [tex]y=mx+b[/tex]. So now, we plug in any of the two points (it doesn't matter which pair!) and solve for b!

[tex]y=mx+b\\-1=\frac{1}{3}(-1)+b\\ -1=-\frac{1}{3}+b\\-1+\frac{1}{3}=b\\b=-\frac{2}{3}[/tex]

Now we have b!

So now, we can fully finish the equation of this line. Your final answer should be: y = (1/3)x - 2/3 or [tex]y=\frac{1}{3}x-\frac{2}{3}[/tex].

Hope this helps!

This tire will save $0.008 per mile

First of all the given information is

110 gallons per 55,000 miles

We need to find

Money saved per mile

55000 = 110

1 = 110/55000

1 miles = 0.002 gallons

Price of 1 gallon = $4.00

Price for 1 mile = 0.002 x 4.00

Price for 1 mile = $0.008

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The question is missing vital information. Therefore, complete question is

The manufacturer of Brand A automobile tires claims that its tire can save 110 gallons of fuel over 55,000 miles of driving, as compared to a popular competitor (brand B). If gasoline costs $4.00 per gallon, how much per mile driven does this tire save the customer (Brand A versus Brand B)?

It should be noted that the hypotenuse is the longest side in the triangle. The opposite is the side facing the angle and the adjacent is the last side.

The hypotenuse is the longest side of a right triangle. An "opposite" side is one that is across from a given angle, while a "adjacent" side is one that is close to a given angle.

According on the angle requested, adjacent and opposing sides can differ. The side that is opposite to the requested angle is the opposite side, and the side that is immediately adjacent to the requested angle is the adjacent side.

In conclusion, the opposite is the side facing the angle and the adjacent is the last side.

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The probability that the three balls have different colours is [tex]\frac{2}{7}[/tex]

Given that An bag contains nine balls, three of which are red, four of which are blue, and two of which are green. Three balls are drawn at random from the bag without replacement and asked to find the probability that the three balls have different colours is [tex]\frac{2}{7}[/tex]

Selecting of 3 balls=9c3

selection of 3 different colour balls=3c1×4c1×2c1

probability:

probability is the ability to happen. The subject of this area of mathematics is the occurrence of random events. From 0 to 1 is used to express the value. To determine how likely an event is to occur, mathematics has created the concept of probability.

probability=[tex]\frac{3c1.4c1.2c1}{9c3}[/tex]

probability= [tex]\frac{2}{7}[/tex]

Therefore,The probability that the three balls have different colours is [tex]\frac{2}{7}[/tex]

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Answer:

Step-by-step explanation:

Subtract:

In the polynomials;

The value of variable = q

The value of exponent = 5

The value of constant = -6

The value of coefficient = -14

Here,

The given polynomial is;

-14q⁵ - 6

We have to find the variable, exponent, constant, and coefficient in the polynomial.

What is an Exponent?

An exponent is refer to number of times a number is multiplied by itself.

Now,

In the given polynomial;

-14q⁵ - 6

The variable is = q

Since, the power of q is 5.

Hence, The value of exponent = 5

And, The value of constant term = -6

And, The value of coefficient = -14

Therefore, In the polynomials;

The value of variable = q

The value of exponent = 5

The value of constant = -6

The value of coefficient = -14

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The answer is B

since sqrt x = x ^1/2 one being the power of the x and two being the number of radical

in this case 7sqrt x^3 = x ^ 3/7 which is B

To find the rate of change in a tablet the same process applies:

1. find the coordinates of the given points, it's optional to label them.

2. find the difference between the output values.

3. find the difference between the input values.

4. calculate the ratio between the change in y to the change in x: ∆y∆x.

That's the correct answer stated above.

Using a proportional relationship, the numbers that could be used as the missing values in the table are:

35 kg, 1.4 ml.

The table is given by:

It asks for the missing value in the table, and the options are given as follows:

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

Considering point (50,2), the relationship is given by:

y = 0.04x.

As k = 2/50 = 0.04.

When x = 35, we have that:

y = 0.04 x 35 = 1.4.

Which means that the point is:

35 kg, 1.4 ml.

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Answer:

c and d

Step-by-step explanation:

Answer:

i dont get what the question is

Using the normal approximation to the binomial, there is a 0.9713 = 97.13% probability that the sum of these variables is less than 60.

This problem is incomplete, but researching it on a search engine, it asks the probability that the sum of these Bernoulli variables is of less than 60.

The z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The binomial distribution is a series of n Bernoulli trials with p probability of a success on each trial, hence the parameters for the binomial distribution are given as follows:

n = 100, p = 0.5.

The mean and the standard deviation are given by:

Using continuity correction, the probability that the sum is less than 60 is P(X < 59.5), which is the p-value of Z when X = 59.5, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

Z = (59.5 - 50)/5

Z = 1.9

Z = 1.9 has a p-value of 0.9713.

Hence there is a 0.9713 = 97.13% probability that the sum of these variables is less than 60.

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Answer: Pretty sure the answer is -10

Step-by-step explanation: If you replace f(x) with 6, you can figure out the answer more quicker.

6 = -x-4

10 = -x

x=-10

Answer:

2

Step-by-step explanation:

Since f(x) is 6, we can plug that into the equation:

6-4,

which gives us 2

The next arrival in the sequence 3:00 pm, 12:30 pm, 10:00 pm,... is 7:30 A.M.

The given sequence is 3:00 pm, 12:30 pm, 10:00 pm,...

Let us first find the difference between the arrivals from the given sequence

3:00 pm - 12:30 pm = 2:30

12:30 pm - 10:00 pm = 2:30

Since, each arrival time is 2 hours and 30 minutes prior to the previous arrival time.

Therefore, the next arrival is:

10:00 pm - 2:30 = 7:30 am

Thus, the next arrival in the sequence is 7:30 A.M.

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Answer:

x + y

Step-by-step explanation:

x + y = - [tex]\frac{11}{8}[/tex] + (- [tex]\frac{11}{4}[/tex]) = - [tex]\frac{11}{8}[/tex] - [tex]\frac{11}{4}[/tex] = - [tex]\frac{11}{8}[/tex] - [tex]\frac{22}{8}[/tex] = - [tex]\frac{33}{8}[/tex]

x - y = - [tex]\frac{11}{8}[/tex] - (- [tex]\frac{11}{4}[/tex] ) = - [tex]\frac{11}{8}[/tex] + [tex]\frac{11}{4}[/tex] = - [tex]\frac{11}{8}[/tex] + [tex]\frac{22}{8}[/tex] = [tex]\frac{11}{8}[/tex]

then

x + y < 0 , that is x + y is negative

Answer:

it's C_67$-$(?9

Step-by-step explanation:

it's )3)384((3(# 920

The ratio in the form of n:1 is 2.25:1.

When comparing two amounts of the same sort, ratio is utilised. For two numbers, a and b, the ratio formula is written as a: b or a/b. Two or more ratios are said to be in proportion if they are all equal.

A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same sort and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.

Given:

ratio 9:4

Now we have to write the ratio in the form of n:1

So, divide the ratio by 4

=9 /4 : 4/4

=9/4: 1

=2.25 :1

Hence, the ratio in the form of n:1 is 2.25:1.

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f

(

4

x

2

−

5

)

=

12

x

2

−

20

Step-by-step explanation:

Angle vqt is congruent to Angle squ by the vertical angles theorem. because angles squ and wrs are corresponding angles, they are congruent according to the Corresponding angles theorem.

Option b is true.

Here,

Segment uv is parallel to segment wz,

Angles squ and vqt are vertical angles.

Angle vqt is congruent to Angle squ by the Vertical angles theorem.

What is corresponding angles?

Any pair of angles each of which is on the same side of one of two lines cut by a transversal and on the same side of the transversal.

Now,

Angle vqt is congruent to Angle squ by the vertical angles theorem.

When, two angles are corresponding angle then, Angle vqt is congruent to Angle squ by the Vertical angles theorem.

And, they are congruent according to the Corresponding angles theorem.

Hence, Segment uv is parallel to Segment wz, while Angles squ and vqt are Vertical angles. Angle vqt is congruent to Angle squ by the vertical angles theorem. Because angles squ and wrs are corresponding angles, they are congruent according to the corresponding angle theorem. finally, Angle vqt is congruent to Angle wrs by the transitive property of equality.

So, Option b is true.

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The baseballs produced in a day would fill 88 boxes and there would be 8 baseballs leftover.

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

A variable can either be dependent or independent. A dependent variable depend on other variable while an independent variable does not depend on other variables.

The assembly line produces 122 baseballs in a batch, If 8 batches are made in one day hence:

Total baseballs produced = 8 batches * 122 balls per batch = 976 balls

Each box contain 11 baseballs each, hence:

number of boxes = 88 boxes and 8 baseballs remaining

The baseballs produced in a day would fill 88 boxes and there would be 8 baseballs leftover.

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The data in the given three questions can be considered as nominal, ordinal and ratio, respectively.

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the points will become from ( x , y ) to ( x - 5 , y + 2) and these has been plotted on the graph.

We are given the coordinates of the points:

A (3 , 2)

B (3 , 6)

C (5 , 4)

We need to plot them on the graph paper.

Now, we need to translate the points 2 units to the up and 5 units to the left.

So, the coordinates will change from ( x , y ) to ( x - 5 , y + 2)

So, we get that:

A (3 , 2) will become A' ( - 2 , 4)

B (3 , 6) will become B' ( - 2 , 8)

C (5 , 4) will become C' ( 0 , 6)

Therefore, we get that, the points will become from ( x , y ) to ( x - 5 , y + 2) and these has been plotted on the graph.

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The lengths of the four sides of such a quadrilateral as indicated in the task content are; 26, 27, 28 and 29.

It follows from the task content that the length of the four sides of the quadrilateral in discuss be determined.

Since the lengths are consecutive integers, we can take.the lengths as;

x, (x+1), (x+2), (x+3).

Hence, the sum of the lengths is equal to 110 as follows;

x + (x+1) + (x+2) + (x+3) = 110

4x + 6 = 110

4x = 104

x = 26 which is the shortest of all sides.

Ultimately, the length of the four sides are; 26, 27, 28 and 29.

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The linear function that models the relationship between the two variables is y = 1200x+ 45000

The given parameters are

Rate = $1200 per year

Initial price in 1960 = $45000

In a linear function, we have

Slope, m = Rate

Y-intercept, c = Initial price

A linear equation is represented s

y = mx + c

So, we have

y = 1200x+ 45000

Hence, the linear function that models the relationship between the two variables is y = 1200x+ 45000

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The student got 87% in the quiz.

Given,

Marks obtained by student = 13/15

percentage received = 13/15 × 100

= 86.6%

= 87%(nearest whole percent)

A percentage is a figure or ratio stated as a fraction of 100 in mathematics. Although the abbreviations "pct.", "pct.", and occasionally "pc" are also used, the percent symbol, "%," is frequently used to indicate it. A % is a number without dimensions and without a measurement system.

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Answer:

False

The perimeter of the trapezoid shown is 23 units

Step-by-step explanation:

Answer: x=-2

Step-by-step explanation:

-3(x+5)= 3(x-1)

-3x-15=3x-3

-3x-15=3x-3

-15=6x-3

6x=-12

x=-2

Answer: 440

Step-by-step explanation: You add 12 to -452

I believe how you find the difference between two numbers is by adding their absolute value. The absolute value ignores the negative and positive values and is really just the distance of the number from 0.

So, with -452 and 12, the distance between them is 464 units

answer: 464

Im sorry if that was confusing!

Answer:

(2, - 1 )

Step-by-step explanation:

to determine which point belongs on the line, substitute the x- coordinate into the right side and if the value obtained is equal to the y- coordinate then it lies on the line.

(1, 3 ) : y = 2(1) - 5 = 2 - 5 = - 3 ≠ 3 ← not on line

(0, 7 ) : y = 2(0) - 5 = 0 - 5 = - 5 ≠ 7 ← not on line

(2, - 1 ) : y = 2(2) - 5 = 4 - 5 = - 1 ← lies on line

(3, - 11 ) : y = 2(3) - 5 = 6 - 5 = 1  ≠ - 11 ← not on line

Answer:

x = -26

Step-by-step explanation:

ab - cd = ?

2(-3) - 4(5) = x

-6 - 20 = x

-26 = x