I NEED HELP ASAP!!
Alex rides his bike to visit two
friends and returned home. Interpret the graph to answer questions about his activities.

1. How long did it take Alec to get to his friends house?

2. How long did he stay at his first friends house?

3. How long did it take alec ti ride his bike from his first friends house to his second friends house?

4. How much longer did alec stay at his first friends house than at his second friends house?

5. In which parts of the graph is alec riding his bike toward his home?

6. In which parts of the graph is alec traveling the fastest?

7. How long was alec away from his house?

There are total 378 students in seventh grade.

What is arithmetic?

Arithmetic is an elementary a part of arithmetic that consists of the study of the properties of the standard operations on numbers—addition, subtraction, multiplication, division, operation, and extraction of roots.

Main body:

The total number of students that are in the seventh grade are 378 students.

The number of students that had already bought tickets will be:

= 158 - 32 = 126 students.

Therefore, based on the information given, the equation to calculate the total students will be:

= (1/3 × x) = 126

x = 3 × 126

x = 378

Therefore, there are 378 students.

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By using property of similar triangle and speed, the answer is 4.2ft/sec

A polygon with three edges and three vertices is called a triangle. It is one of the fundamental geometric shapes.

Similar triangles always have comparable sides that are in the same ratio.

We can compare the ratio of sides of similar triangle for the calculations.

x= shadow length at 35feet away.

Using the property of Similar Triangle we get,

[tex]\frac {16}{35+x} = \frac {6}{x}[/tex]

x=21 feet

Velocity of shadow= 21/5

=4.2 feet/sec

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The smallest possible composite, positive, integer x and y such that x/y=5 are x=20, y=4.

The result of multiplying two smaller positive integers is a positive integer known as a composite number. It is, in other words, an integer that is positive and has at least one divisor besides itself and 1. The composite numbers are exactly the numbers that are not prime and not a unit, since every positive integer is either composite, prime, or the number 1.

Because it is the result of the two smaller integers 2 and 7, for instance, the number 14 is a composite number. The integers 2 and 3 are also not composite numbers because they can only be divided by one another and themselves.

The smallest possible composite, positive, integers are

4 and 20

20/4=5

So, x=20 and y=4

Therefore, the smallest possible composite, positive, integer x and y such that x/y=5 are x=20 and y=4.

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The area of trapezoid with sides 125ft and 81ft with height 75ft is: 7,725ft².

Area of a trapezoid,

A = 1/2 x (b1 x b2)h

Here given,

b1 = 125ft

b2 = 81ft

h = 75ft

By substituting the values ,

A = 1/2 ( 125 + 81 ) x 75

A = 1/2 x 206 x 75

A = 0.5 x 206 x 75

A =  7,725 ft²

The complete question is "To answer the question, use the formula for the area of a trapezoid A=h((b1+b2)/2), where A is the area, b1 and b2 are the lengths of the bases, and h is the height. What is the area of grass on a trapezoidal field with a height of 75 feet and bases of 125 feet and 81 feet? HINT: Use the values given for h, b1, and b2.".

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The area of trapezoid is 7725 ft²

What is a trapezoid?

In American and Canadian English, a quadrilateral with at least one pair of parallel sides is referred to as a trapezoid. It is referred to as a trapezium in British and other varieties of English.

In Euclidean geometry, a trapezoid is a convex quadrilateral by definition. The bases of the trapezoid are the parallel sides. If the remaining two sides are parallel, they are referred to as the legs (or lateral sides); if not, the trapezoid is a parallelogram, and there are two pairs of bases. Unlike the specific situations below, a scalene trapezoid is a trapezoid that lacks equal-sized sides.

Given, the expression for the area a is given as

a = [(b₁ + b₂)/2]*h

where b₁ = 125ft, b₂ = 81ft, h = 75ft.

Substituting these values in the above area expression, we get,

a = [(125+81)/2]*75

a = 103*75

a = 7725 ft²

Thus, the area of trapezoid is 7725 ft²

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The probability that he makes the first and second free throw, but misses the third free throw is 7.7 %.

Given :

suppose steph curry is fouled while shooting a three-point goal and misses his shot. the probability of steph curry making a free throw is 90%.

probability :

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

P ( makes 2 then misses 1 ) = P ( make 1st ) and P ( make 2nd ) and P ( miss 3rd )

= 0.906 *0.906 * 0.094

= 0.077

= 7.7 %

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In 12 years the two trees will be at the same height of 120 inches for the given condition of the equation.

What is an equation?

A mathematical statement called an equation demonstrates the equality of two mathematical expressions.

Based on the given condition of a question,

Let X be the required time duration, and then the equation will be

or, (48+6X)=(72+4X)

or, 48+6X=72+4X

or, 6X-4X=72-48

or, 2X=24

or, X=24/2

or, X=12 year

And height = 48 + 6*12 = 48 + 72 = 120 inches

Hence, In 12 years the two trees will be at the same height of 120 inches.

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Step-by-step explanation:

is that root 3 x..........?

A criteria for construction of triangle include the following: B. SAS.

In Mathematics, a triangle can be defined as a two-dimensional (2D) geometric shape that comprises three (3) sides, three (3) vertices and three (3) angles only.

Generally speaking, the side, angle, side (SAS) criterion is essential for the construction of any triangle such as the following:

Based on the side, angle, side (SAS) criterion, a statement which is necessary to prove that two (2) triangles are congruent is that one of its side must be equal to another side because their angles are equal in measure or magnitude.

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Answer: 16

Step-by-step explanation:

32% of 50 = 16

Answer:

Below

Step-by-step explanation:

Area of a triangle = 1/2 b * h

Triangle A = 1/2 (4 * 10) = 20  units^2     ( I got the '10' from answers below)

Triangle B must be    b = 2   h = 2    (for area = 2)

Rectangle C must be  2 x 2               ( for area = 4)

Triangle D = 1/2 (2+2+6)*2 = 10 units ^2

Total = 20 + 2+4+ 10  = 36 units^2

Answer:

32

Step-by-step explanation:

Area of a triangle = 1/2bh

b = base

h = height

Area of a square = bh, where b=h

A:  1/2(2+2+6)(4) = 20

B:  1/2(2)(2) = 2

C:  (2)(2) = 4

D:  1/2(6)(2) = 6

Total = A+B+C+D = 20+2+4+6 = 32

**the way the dimension "6" is labeled is a little confusing.  I assumed 6 is the base of triangle D

Consequently, we deduce that the typical output voltage is under 130.

In statistics, the standard deviation measures how widely distributed or how much a bunch of values can vary. While a big standard deviation shows that values are scattered throughout a wider range, a low standard deviation suggests that values are frequently close to the set's mean.

Here,

A defined output voltage of 130 is offered for an electrical circuit.

The voltage for this circuit was measured 40 times independently, with a sample mean of 128.6 and a standard deviation of 2.1.

Let's say the average output voltage.

Null Hypothesis, [tex]H_{0}[/tex]:  = 130 denotes that the average output voltage is 130.

A Different Hypothesis, [tex]H_{A}[/tex] :  < 130  ( it indicates that the average output voltage is below 130.)

One-sample t test statistics will be employed in this case because we are unsure about the population standard deviation;

            T.S.  =   ~ [tex]\frac{X^{'}-u }{\frac{s}{\sqrt{n} } }[/tex]

In this case, sample mean output voltage equals 128.6

Sample standard deviation equals 2.1, or s.

n = 40 for the sample of independent readers.

Thus, test statistics equal.

So, test statistics  =    ~[tex]\frac{128.6-130 }{\frac{2.1}{\sqrt{40} } }[/tex]

                              =  -4.216

Now, for a left-tailed test with a 0.05 level of significance, the t table provides a critical value of -1.685 at 39 degrees of freedom. We have enough data to reject our null hypothesis because it will fall in the rejection region because our test statistics are smaller than the crucial value of t, which is -4.216 -1.685.

Consequently, we deduce that the typical output voltage is under 130.

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The second triangle pairs are not necessarily congruent.

Option 2 is true.

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

There are some triangles is shown in figure.

Now,

We know that;

Two triangles are congruent by theorem of SAS , ASA theorem.

So, When the ''two sides and one angle'' or ''two angle and one side'' are equal to another triangle then the triangles are congruent.

Here, In second option we have;

Only angles are equal, which make them similar not congruent.

Thus, We get;

The second triangle pairs are not necessarily congruent.

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If they keep running at the same pace, they will eventually meet at the same end of the course after 30 minutes.

The rate at which distance and time change is what is meant by speed. It has the aspect of temporal and spatial distance. The basic unit of distance with the basic unit of time are combined to form the SI unit of speed. This means that the SI unit of speed is the metre per second.

The way that the issue is described is vague.

I believe what is being said here is that they continue to jog at the same speed.

Half a mile per ten minutes is Diane's speed.

2/3 miles per 10 minutes is Jack's speed.

The numerator and denominator (top and bottom of the ratio) must be multiplied by the factor between 10 minutes and an hour (60 minutes) in order to convert this to a standard miles per hour format.

60/10 = 6.

In order to convert the above speeds to miles per hour, we must multiply both speeds by 6.

Diane: (1/3 divided by 6)/hour equals 2 miles/hour

Jack: (4 miles per hour) = (2/3 x 6) / hour

Diane will complete one length in the time it takes Jack to complete a round trip (back) because he runs twice as fast as she does.

Running a mile at a speed of two miles per hour takes Diane 30 minutes.

Running 2 miles (back and forth) at a speed of 4 miles per hour will take Jack 30 minutes.

So after 30 minutes they will meet again at his starting point.

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Answer:

  4.05 pounds

Step-by-step explanation:

You want to know the weight that can be added to 2.65 pounds and 10.8 pounds if the total is to be 17.5 pounds.

The available capacity is the difference between the capacity and the weight already in the container:

  17.5 lb -2.65 lb -10.8 lb = 4.05 lb

The container can hold up to 4.05 more pounds.

The coordinates of the square be

A (0, 0)

B (a, 0)

C (a, a)

D (0, a)

slope of line AC = 1

Slope is the rate of change of the line AC this is solved by taking the ratio of change in y to change in x

A (0, 0) and C (a, a)

= (0 - a) / (0 - a)

= -a / -a

= 1

Slope of line BD = -1

the product of the slopes

= 1 * -1

= -1

therefore the diagonals of the ABCD are perpendicular since the product of the slope is -1

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Answer:

[tex] \huge{ \boxed{f(g(x)) = 4 {x}^{4} - 12 {x}^{3} + 15 {x}^{2} - 9x - 10 \\ }}[/tex]

Step-by-step explanation:

[tex]f(x) = {x}^{2} + 7x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ g(x) = - 2 {x}^{2} + 3x - 5[/tex]

To find f(g(x)), substitute g(x) into f(x). That is for every x found in f(x) replace it with g(x) and solve.

[tex]f(g(x)) = {( - 2 {x}^{2} + 3x - 5) }^{2} + 7( - {2x}^{2} + 3x - 5) \: \: \: \: \: \: \: \: \: \: \\ \\ = (4 x^4 - 12 x^3 + 29 x^2 - 30 x + 25) + (-14 x^2 + 21 x - 35) \\ = 4 {x}^{4} - 12 {x}^{3} + 29 {x}^{2} - 14 {x}^{2} - 30x + 21x + 25 - 35 \\ \\ = 4 {x}^{4} - 12 {x}^{3} + 15 {x}^{2} - 9x - 10[/tex]

We have the final answer as

[tex]f(g(x)) = 4 {x}^{4} - 12 {x}^{3} + 15 {x}^{2} - 9x - 10 \\ [/tex]

The tangent theta is a Trigonometric function, the simplified value of 1 + tan²θ is sec²θ.

Trigonometric functions are also called circular functions. They are easily defined as functions of triangle angles. This means that the relationships between the angles and sides of triangles are given by these trigonometric functions. The basic trigonometric functions are sine, cosine, tangent, cotangent, secant and cosecant. Also read the triangle identity here.

We have given an expression, 1 + tan²θ

we know that , tanθ = sinθ /cosθ

sin²θ + cos²θ =1 and 1/cosθ = secθ

Now, 1 + tan²θ = 1 + sin²θ/cos²θ

taking LCM cos²θ

=> 1 + tan²θ = (cos²θ + sin²θ )/cos²θ

=> 1 + tan²θ = 1/cos²θ

=> 1 + tan²θ = sec²θ

Hence, the required expression is sec²θ.

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The  missing side length in the given right triangle is d) 23.6cm if the other two sides lengths are 14cm and 19cm respectively. So, correct option is d.

We know very well that if a triangle is a right angled it means that  Pythagorean Theorem is applicable on it.

Pythagorean Theorem states that if a triangle is right angled then the sum of square of two sides which are originating from that angle which is 90 degree is equal to square of third side.

In other words,a²+b²=c² where a and b are two sides originating from 90 degree angle and c is the third side which is opposite of the 90 degree angle.

Now, we have a=14 and b=19cm,we need to find value of c.

So, putting the values, we get

=>14² + 19² =c²

=>c²=361+196

=>c² = 557

=>c=√557

=>c=23.6cm

Hence, missing side length is d)23.6cm

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(Complete question) is:

what is the missing side length in this right triangle if the other two sides length are 14cm and 19cm respectively ? round the answer to the nearest tenth.5.7 cm5.7 cm12.8 cm12.8 cm23.6 cm

Answer:

x = pm - pn

Step-by-step explanation:

m = n + [tex]\frac{x}{p}[/tex]  Subtract n from both sides

m - n = n - n + [tex]\frac{x}{p}[/tex]

m-n = [tex]\frac{x}{p}[/tex]   Multiply both sides by p

p(m - n) = ([tex]\frac{p}{1}[/tex]) [tex]\frac{x}{p}[/tex]          [tex]\frac{p}{1}[/tex] means the same as p

pm - pn = x             Distribute the p

x = pm - pn

The coordinate of the reflection about the line y = 9 is thus (7, 4)

Reflection is a transformation in which an object is flipped over a line.

We know that to reflect W(-7, 4) over the line y = 9, the distance of the point W and its reflection from the line y = 9 must be the same.

The distance of point W(-7, 4) from the line y = 9 is d = 9 - (- 7) = 9 + 7 = 15

So, the x - coordinate of the reflection from the line y = 9 is x = 15 - 9 = 7

Since the y - coordinate of the point W, does not change, the coordinate of the reflection about the line y = 9 is thus (7, 4)

So,  the coordinate of the reflection about the line y = 9 is thus (7, 4)

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The inverse of a function is f^-1(x) = 3(x + 17)/2 and f^-1(x) = x + 10

What is function ?

An expression, rule, or law in mathematics that specifies the relationship between an independent variable and a dependent variable (the dependent variable).

An example of a rule is a function, which produces one output for a single input. Alex Federspiel is the picture's author. Y=X2 is an illustration of this. You only get one output for y if you enter anything for x. The fact that x is the input value leads us to say that y is a function of x.

Functions can be roughly categorized into four sorts. based on the element Numerous to one function, onto function, one to one and onto function, into function.

1.f(x) = 2x/3 - 17

Finding the inverse

y = f(x)

  = 2x / 3 - 17

Exchange the variables, x for y and y for x

x = 2y / 3 - 17

Isolate the variable y

Adds 17 both sides

x + 17 = 2y / 3

Multiply by 3 both sides

3(x+17) = 2y

Divide by 2 both sides

y = 3(x + 17)/2

let f^-1(x) = y

f^-1(x) = 3(x + 17)/2

2. f(x) = x - 10

Finding the inverse

y = f(x)

  = x - 10

Exchange the variables, x for y and y for x

x = y - 10

Isolate the variable y

Adds 10 both sides

y = x + 10

Multiply by 3 both sides

3(x+17) = 2y

let f^-1(x) = y

f^-1(x) = x + 10

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To find the cost of the shirts, we need to set up a system of equations. Let x be the number of shirts.

Option 1: 34 + 10x = Option 2: 23 + 11x

We can solve this system of equations by subtracting the equations:

34 + 10x - 23 - 11x = 0

11x - 23 = 0

11x = 23

x = 23 / 11

Therefore, the cost is the same when the team orders 23/11 = 2 shirts.

The number of rolls of a fair six sided die will be  1/6.

A cube (plural "cubes") is a solid with marks on each face. Since the faces are usually all of the same shape, the dual of the Platonic solids and the Archimedean solids is a natural choice. You can "roll" a die by throwing it in the air and letting it rest on one of its faces. Dice are used in many games to choose random numbers to bet on, and are used in board and role-playing games to determine how many squares to move, the outcome of a competition, etc. Coins are a degenerate two-sided case of dice.

In probability theory, an outcome is the possible outcome of an experiment or trial. Each possible outcome of a given experiment is unique, and different outcomes are mutually exclusive (only one outcome occurs in each trial of the experiment). All possible outcomes of an experiment form an element of sample space.

According to the question,

When a dice is thrown, number of possible outcomes =

1, 2, 3, 4, 5, 6 = 6 = n

Here, 6 occurs one time, i.e. m = 1

Thus, Probability of getting a number 6 = 1/6

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The number of 1 cup candle mold which the can fill with 144 ounce  of cented candle wax is 18.

As we know ,

1-cup= 8 ounces

On dividing ,

144 by 8 =  18

Therefore , the no of cups which can be filled is 18 .

One of the fundamental arithmetic operations in mathematics is the division, which is the process of dividing a group of items into equal pieces. Every day, we might employ the division approach in various situations.

Any number divided by 0 has no specified result. The outcome in this situation can be expressed as infinite. For instance, 15/0 =, which is undefined.

Dividend :

The division procedure shown below is used to divide any expression.

Dividend is equal to Divisor Quotient + Remainder.

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Answer:

Step-by-step explanation:

-Start by distributing the 2, -2(3m+1/2).

-Getting -6m-1, your equation should look like -40-6m-1=7m-2

-Combine -40 and -1 to get -41, and then add the -6m to the other side.

-The equation should look like -41=13m-2. Add the 2 to the -41 to get -39.

-Now, we have -39=13m. divide both sides by 13 to get m=-3.

The scientific notation is  [tex]1.45*10^{11}[/tex]

Scientific notation is a way to present extremely large or extremely small numbers in a more understandable way. We are aware that full numbers can go on forever, but we are unable to write such enormous figures on paper. Additionally, a simpler method of representation was required for the numbers that appear at the millions place after the decimal. This makes it challenging to represent a small number of integers in their enlarged form. We, therefore, employ scientific notations.

We need to move the decimal point 11 places to the left therefore the exponent for the 10s term will be positive:

[tex]145,000,000,000=145,000,000,000.0=1.45*10^{11}[/tex]

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The rate at which the diameter decreases is  -0.16cm/min

Diameter:

In geometry, diameter refers the straight line that goes from one side to the other side of a circle, passing through the center.

Given,

Here we need to find if a snowball melts so that its surface area decreases at a rate of 1cm^2/min, find the rate at which the diameter decreases when the diameter is 10 cm. Finish solving the problem. Write an equation that relates the quantities.

Here  we obtained the equation that relates the surface area S and the diameter D of a sphere given by

=> S = πD²

Now, we have differentiate the equation as,

=> dS/dt = d/dt (πD²)

=> dS/dt = π d/dt (D²)

​=> dS/dt = 2πD dD/dt

Now, Solving for dD/dt, which is the unknown for this problem, we have

=> dD/dt ​= 1/2πD​ x dS​/dt

Now, substituting the given values, the rate of change of the diameter when D=10 cm and dS/dt as (-1) is

=> dD/dt = 1/2 x π x 10 (-1)

=> dD/dt = -1/20π

=> dD/dt = -0.16cm/min

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The value of the standardized test statistic for this significance test is 1.7265

Standardized test statistic

In statistics, the standardized test statistic means a way for you to compare your results to a “normal” population.

Given,

A city ordinance requires that more than 75% of its residents must agree to the construction of new public buildings (using tax dollars) before any such structures can be built. a proposal has been made to build a new recreational facility in the city, and sponsors of the proposal want to conduct a small survey to see if it would be approved if put to an official vote of all residents. a simple random sample of 150 residents revealed that 123 supported a change (and 27 did not).

Here we need to find the value of the standardized test statistic for this significance test.

While we looking into the given question we have identified the following values,

Random samples = 150

Supported values = 123

Not supported = 23

Aggreged percentage = 75%

So, the null and alternative hypotheses were as follows: H0: p = 0.75 and Ha: p ≠ 0.75.

Then the value of Standardized test statistic is calculated as,

=> (150 - 123) / (75 / √23)

=> 1.7265

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Mean = 54.52

V(X) = 3.2712

S.D = 1.8086

To calculate the mean (expected value) of a binomial distribution B(n, p) you need to multiply the number of trials n by the probability of successes p , that is: mean = n × p

Where, n= 58

p = 0.94

Therefore, mean = 54.52

To find the Variance of the given binomial distribution

Variance = np(1-p)

=58 X 0.94 ( 1- 0.94)

= 54.52 X 0.06

V(X) = 3.2712, when we know the variance and the mean then we can calculate the standard deviation easily

To find the standard deviation of the given binomial experiment = [tex]\sqrt{np(1-p)}[/tex]

= [tex]\sqrt{3.2712}[/tex]

S.D = 1.8086

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