The number of beads on 500 necklaces follow normal distribution whose mean is 24 beads and standard deviation os 4 beads. How many necklaces have more than 28 beads?

Answer:

The probability is 0.0015

Step-by-step explanation:

We know that the mean [tex]\mu[/tex] is:

[tex]\mu=6:30\ p.m[/tex]

The standard deviation [tex]\sigma[/tex] is:

[tex]\sigma=0:15\ minutes[/tex]

The Z-score is:

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

We seek to find

[tex]P(x>7:15\ p.m.)[/tex]

The Z-score is:

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

[tex]Z=\frac{7:15-6:30}{0:15}[/tex]

[tex]Z=\frac{0:45}{0:15}[/tex]

[tex]Z=3[/tex]

The score of Z = 3 means that 7:15 p.m. is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

So

[tex]P(x>7:15\ p.m.)=P(Z>3)=0.0015[/tex]

Answer:

5

Step-by-step explanation:

2/125 * 5 = 2/25

Answer:

https://edge-answers.org/

Gives most of the answers.

Step-by-step explanation:

Answer:

A) cotx = cosx/sinx    

C) tanx = 1/cotx

Step-by-step explanation:

A)

cosx/sinx = 1/(sinx/cosx) = 1/tanx = cotx

Therefore, cotx = cosx/sinx  

C)

Similarly;

1/tanx = cotx

Therefore,

1 = tanxcotx

1/cotx = tanx

and

tanx = 1/cotx

B) cscx=1/cosx is not true since;

1/cosx = secx

and

cscx = 1/sinx

Answer:

1. 48 square feet

2. 308 square feet

Step-by-step explanation:

1.

The entry terrace is shaped as a trapezoid and the area of a trapezoid is given as:

Area of Trapezoid = [tex]\frac{1}{2}(b_1+b_2)h[/tex]

Where

b_1 and b_2 are the 2 parallel bases

and h is the perpendicular height

From the diagram, we see that the 2 bases are 16 and 8 and height is 4.

Plugging into the formula, we get:

Area of Entry Terrace = [tex]\frac{1}{2}(b_1+b_2)h=\frac{1}{2}(16+8)*4=\frac{1}{2}(24)(4)=48[/tex]

2.

The total area comprises of the area of entry terrace + playroom + back porch.

The area of the back porch is 6 * 6 = 36 (it is shaped like a square and square has area of side * side)

The area of the playroom is 14 * 16 = 224 (it is a rectangle and rectangle has area of base * height)

Total area of treehouse = 48 + 36 + 224 = 308 square feet

Answer:

The entry terrace has an area of

48

square feet. The total area of the tree house including the entrance, porch, and side deck is

350

square feet.

Step-by-step explanation:

I just took a test with this question and this was the right answer

~Please mark me as brainliest : )

Answer: A. 1 inch high and 5 inches wide.

Step-by-step explanation:

If you divide both sides by 5, you get 1 and 5, which makes it an equal representation,

ANSWER

P(x)=2(f+g)(x)

EXPLANATION

The perimeter of a rectangle is calculated using the formula:

P=2(l+w)

From the table

The length is f(x)=x+3

The width is g(x)=x+2

This implies that the perimeter is

P(x)=2(f(x)+g(x))

This is the same as

P(x)=2(f+g)(x)

Answer:

The correct option is D.

Step-by-step explanation:

It is given that the table represents the total price including parking, p(t), for family fair packages with various numbers of included tickets, t.

t     :  0    10      20     30     40     50

P(t) : 15   27.5   40    52.5   65   77.7

Choose any points from the table. (0,15) and (10,27.5).

The equation of function is

[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]

[tex]y-15=\frac{27.5-15}{10-0}(x-0)[/tex]

[tex]y-15=\frac{12.5}{10}(x)[/tex]

[tex]y-15=1.25x[/tex]

Add 15 on both the sides.

[tex]y=1.25x+15[/tex]

[tex]P(t)=1.25t+15[/tex]

The family has a budget of $90.

[tex]P(t)\leq 90[/tex]

[tex]1.25t+15\leq 90[/tex]

Subtract 15 from both the sides.

[tex]1.25t\leq 75[/tex]

Divide both sides by 1.25.

[tex]t\leq 60[/tex]

Domain is the set of inputs or the values of t.

[tex]Domain=\{t|0\leq t\leq 60,t\in W\}[/tex]

Range is the set of outputs or the values of function p(t).

[tex]Range=\{P(t)|15\leq P(t)\leq 90,P(t)\in R\}[/tex]

Therefore the correct option is D.

Final answer:

The correct restricted domain is all whole numbers from 0 to 50 inclusive, and the restricted range is all real numbers from 15 to 77.5 inclusive, given the family's budget constraint of $90. Therefore, the correct option is B.

Explanation:

The problem presented involves determining the restricted domain and range of a function p(t) that reflects the total price, including parking, for family fair packages with a varying number of included tickets (t). Considering the family's budget of $90, we must identify the correct domain and range within this context. The domain here is the number of tickets, which can only take on certain specified values, and the range is the pricing associated with those ticket amounts. The possible ticket numbers (t) are 0, 10, 20, 30, 40, 50, and the corresponding prices (p(t)) are 15, 27.5, 40, 52.5, 65, 77.5.

Considering the given budget constraint, the domain and range must also not exceed $90. Thus, we exclude any ticket numbers or prices above this threshold when determining the domain and range. The correct answer to the question is B: The domain is restricted to all whole numbers from 0 to 50 inclusive. The range is all real numbers from 15 to 77.5 inclusive since these are the observed outputs from the function p(t) within the family's budget.

Answer:

8

Step-by-step explanation:

took the test

ANSWER

B. (-1,0)

EXPLANATION

The x-intercepts are the points where the graph touches the x-axis.

We can observe from the graph that, the graph touches the x-axis at:

x=-2, x=-1, x=1 and x=2.

Therefore the x-intercepts are (-2,0),(-1,0),(1,0) and (2,0).

From the given options, the only point which is an x-intercept is (-1,0)

The second choice is correct.

The x-intercepts of the graph given in the question is (-1,0). Therefore, the second option is correct.

The x-intercepts are the points on the graph where it intersects the x-axis.

In the graph provided in the question, it is observed that the graph touches the x-axis at x = -2, x = -1, x = 1, and x =2.

Therefore, the intercepts of the x-axis are (-2,0),(-1,0),(1,0), and (2,0). So, from the given options (-1,0) is satisfied,

The second option is correct.

Learn more about intercepts here:

https://brainly.com/question/14180189

#SPJ6

Answer:

x = [tex]\frac{3}{2}[/tex]

Step-by-step explanation:

To eliminate the fraction multiply all terms on both sides by 3

(x - 3) - 3x + 9 = 6(x - 1) ← distribute parenthesis on both sides

x - 3 - 3x + 9 = 6x - 6

- 2x + 6 = 6x - 6 ( subtract 6x from both sides )

- 8x + 6 = - 6 ( subtract 6 from both sides )

- 8x = - 12 ( divide both sides by - 8 )

x = [tex]\frac{-12}{-8}[/tex] = [tex]\frac{3}{2}[/tex] = 1.5

Answer:

y = (-3/2)x - 4

Step-by-step explanation:

If y = (2/3)x + 9, the slope is 2/3.  Any line perpendicular to this line would have the slope -3/2, which is the negative reciprocal of 2/3.

If the perpendicular line passes thru (-6, 5), then the equation in slope-intercept form would be:

y = mx + b, or (here) 5 = (-3/2)(-6) + b.  From this we see that b = -4, and the desired equation is y = (-3/2)x - 4 (Answer Choice #3)

Step-by-step explanation:

work work work :)

Love you

Answer:

This is the answer

Step-by-step explanation:

Answer:

91

Step-by-step explanation:

To solve this use order of operations and the acronym PEMDAS:

Parentheses:

There are no parentheses

Exponents:

[tex]3^4[/tex] is equal to 3 x 3 x 3 x 3.

3 x 3 is 9, so we can simplify this to 9 x 9.

9 x 9 is 81.

Now we have 81 + 2 x 5

Multiplication or Division:

Multiply 2 x 5.

2 x 5 = 10.

Now we have 81 + 10

Addition or Subtraction:

Add 81 + 10

81 + 10

= 91

Answer:

The correct answer option is A. y = 5x + 29.

Step-by-step explanation:

We are given the following equation of a line and we are to identify the equation of a line parallel to this line which passes through (-6, -1), in slope intercept form:

[tex]y = 5x+2[/tex]

Parallel lines have same slope, so the slope of this line will be 5.

Finding the y-intercept using the standard equation of line.

[tex]y=mx+c[/tex]

[tex]-1=5(-6)+c[/tex]

[tex]c=29[/tex]

Therefore, our equation will be:

[tex]y=5x+29[/tex]

The answer is:

The equation of the line that it's parallalel to the given line and passes through the point (-6,-1) will be:

A.

[tex]y=5x+29[/tex]

To find an equation in slope-intercept form for the linea paralallel to the given line, we must guarantee that the new line will have the same slope of the given line.

We are given the line:

[tex]y=5x+2[/tex]

Where its slope is equal to 5

[tex]m=5[/tex]

and the point (-6,-1)

The slopte-intercept form of a line, is given by the following equation:

[tex]y=mx+b[/tex]

Then, we know that the line that we are looking for, will have a slope equal to 5, so:

[tex]y=5x+b[/tex]

Now, substituting the given point in order to find "b", we have:

[tex]y=5x+b[/tex]

[tex]-1=5*(-6)+b[/tex]

[tex]-1=-30+b[/tex]

[tex]b=-1+30=29[/tex]

Hence, we have that the equation of the line that it's parallalel to the given line and passes through the point (-6,-1) will be:

[tex]y=5x+29[/tex]

Have a nice day!

Kyra sold a car that cost $26,500

1325 = 0.05x

1) 0.05x = 1325

2) Divide both sides by 0.05 -—> 0.05x/0.05 = 1325/0.05

3) x = 26,500

Final answer:

Kyra's commission of $1,325, which is 5% of the car's cost, leads us to calculate the cost of the car by dividing the commission by the commission rate, resulting in a car cost of $26,500.

Explanation:

Kyra receives a 5% commission on every car she sells. We are given that her commission on the last car she sold was $1,325. To find the cost of the car, we use the formula:

Commission = (Commission Rate) × (Cost of the Car)

Therefore,

Cost of the Car = Commission ÷ Commission Rate

Cost of the Car = $1,325 ÷ 0.05

Cost of the Car = $26,500

So, the car that Kyra sold was worth $26,500.

Ok the formula for this is 2(lw +hw+hL)

2(30+35+42)=2(107)=214 square feet

[tex]214 ft^{2}[/tex]

Answer:

Point-slope equation of this line:

[tex]\displaystyle y - 1 = \frac{1}{2}(x-5)[/tex].

Step-by-step explanation:

The equation for a line in a cartesian plane can take multiple forms. This question gives

The point-slope form will the most appropriate.

What is the point-slope form equation of a line [tex]l[/tex]?

In general,

[tex]l:\; y - y_0 = m (x - x_0)[/tex],

where

In other words, [tex](x_0,\; y_0)[/tex]the point on the line.

For this line,

Thus the equation for this line:

[tex]\displaystyle y - 1 = \frac{1}{2} (x - 5)[/tex].

Answer:

20

Step-by-step explanation:

5! = 5*4*3*2*1

3! = 3*2*1

5!/3! = 5*4*3*2*1

           ----------------

           3*2*1

Canceling common factors

      = 5*4

       = 20

For this case we have that by definition, the factorial of a number is the product of the "n" consvutive factors from n to 1. The factors are in descending order, that is:

[tex]n! = n (n-1) (n-2) ... 3 * 2 * 1[/tex]

Then, we have the following expression:

[tex]\frac {5!} {3!}[/tex]

Applying the definition we have:

[tex]\frac {5!} {3!} = \frac {5 * 4 * 3 * 2 * 1} {3 * 2 * 1} = \frac {120} {6} = 20[/tex]

ANswer:

20

Answer:

x = 39.1

Step-by-step explanation:

Points to remember

Mean of a data set is given by

Mean = (sum of data set)/Total number of data

To find the value of x

It is given a data set

31.7, 42.8, 26.4, x

Mean = 35

Sum of data set = 31.7 + 42.8 + 26.4 + x = 100.9 + x

(100.9 + x)/4 = 35

100.9 + x = 35 * 4 = 140

x = 140 - 100.9 = 39.1

Therefore x = 39.1

Answer:

a) (-2,-8)

b) not sure :(

c) (0,-4)

Step-by-step explanation:

To find the vertex rewrite in vertex form and use this form to find the vertex (h,k).  To find the y-intercept, substitute in 0 for x and solve for y.

Answer: [tex]x[/tex]≈[tex]0.732[/tex]

Step-by-step explanation:

You need to find the value of the variable "x".

To solve for "x" you need to apply the following property of logarithms:

[tex]log(m)^n=nlog(m)[/tex]

Apply logarithm on both sides of the equation:

[tex]90^x=27\\\\log(90)^x=log(27)[/tex]

Now, applying the property mentioned before, you can rewrite the equation in this form:

[tex]xlog(90)=log(27)[/tex]

Finally, you can apply the Division property of equality, which states that:  

 [tex]If\ a=b,\ then\ \frac{a}{c}=\frac{b}{c}[/tex]

Therefore, you need to divide both sides of the equation by [tex]log(90)[/tex]. Finally, you get:

[tex]\frac{xlog(90)}{log(90)}=\frac{log(27)}{log(90)}\\\\x=\frac{log(27)}{log(90)}[/tex]

[tex]x[/tex]≈[tex]0.732[/tex]

Answer:

The correct answer option is B. 7/12.

Step-by-step explanation:

We are given that a baseball player gets to base 7 times and strikes out 5 times during a tournament.

We are to find the experimental probability of the player getting on base.

Assuming that there are only two outcomes,

number of times player gets on base = 7

number of times player strikes out = 5

total number of both outcomes = 12

Experimental probability of getting on base = 7/12

The answer above is right

i think its x = 10, -2

Answer:

The answer to your question is -4

Step-by-step explanation:

:)

The sum of the measure of the angles in a triangle are 180 degrees.

In this formula solve for x

32 + 70 + x = 180

102 + x = 180

(102 - 102) + x = 180 - 102

x = 78

The last angle is 78 degrees

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer: If you take the $8 service fee away from 38 you get 30. Then do 30/.12 and you get 250. To check it just do 250 x .12 and you'll get 30.

The answer is 250 minutes

Step-by-step explanation:

To find the number of minutes the customer used the phone, solve the equation c = 0.12m + 8 where c is the total cost for one month and m is the number of minutes used. Given that the customer's bill for the month is $38.00, substitute this value and solve for m. The customer used the phone for 250 minutes.

To find the number of minutes the customer used the phone, we can solve the equation

c = 0.12m + 8

where c is the total cost for one month and m is the number of minutes used.

Given that the customer's bill for the month is $38.00, we can substitute this value for c in the equation:

$38.00 = 0.12m + 8

Next, we can subtract 8 from both sides of the equation and then divide by 0.12 to isolate the variable m:

$38.00 - 8 = 0.12m

$30.00 = 0.12m

m = $30.00 / 0.12

m = 250 minutes

So, the customer used the phone for 250 minutes.

Answer:

Part 5) ∠x=122°

Part 6) Option D. ∠x=114°

Part 7) Option B.300π cm^3

Part 8) The volume of the cone is [tex]V=602.88\ in^{3}[/tex]

Part 9) The value of x is 12 cm

Part 10) BC=21 units

Part 11) Option D.reflection across the y-axis

Part 14)  [tex]x=15.6\ cm[/tex]

Part 15) B. 5, 12, 13

Step-by-step explanation:

Part 5)  What is the value of x?

we know that

∠x+58°=180°------> by supplementary angles

solve for x

∠x=180°-58°=122°

Part 6)  What is the value of x?

we know that

The sum of the interior angles of a triangle must be equal to 180 degrees

The measure of the third interior angle of the triangle is equal to

180°-61°-53°=66°

so

66°+∠x=180° -----> by supplementary angles

solve for x

∠x=180°-66°=114°

Part 7) A cylinder has a radius of 5 cm and a height of 12 cm. What is the volume of the cylinder?

we know that

The volume of the cylinder is equal to

[tex]V=\pi r^{2} h[/tex]

we have

[tex]r=5\ cm[/tex]

[tex]h=12\ cm[/tex]

substitute

[tex]V=\pi (5)^{2} (12)[/tex]

[tex]V=300\pi\ cm^{3}[/tex]

Part 8) A cone has a diameter of 12 in. and a height of 16 in. What is the volume of the cone?

we know that

The volume of the cone is equal to

[tex]V=(1/3)\pi r^{2} h[/tex]

we have

[tex]r=12/2=6\ in[/tex] ------> the radius is half the diameter

[tex]h=16\ in[/tex]

substitute

[tex]V=(1/3)(3.14)(6)^{2} (16)[/tex]

[tex]V=602.88\ in^{3}[/tex]

Part 9) Rectangle ABCD is similar to rectangle FGHI. What is the value of x?

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional

In this problem

AB/FG=BC/GH

substitute the values

8/6=x/9

x=9*8/6

x=12 cm

Part 10) Given quadrilateral ABCD ~ quadrilateral JKLM and AD = 14, JM = 6, and KL = 9, what is BC?

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional

so

AD/JM/BC/KL

substitute the values

14/6/BC/9

BC=14*9/6

BC=21 units

Part 11) What transformation was performed on triangle ABC to create triangle A'B'C' ?

we know that

The rule for a reflection over the y -axis is (x,y)→(−x,y)

so

When reflecting across the y- axis the x-values will be multiplied by negative one, but the y-values will not change

This problem is a reflection across the y-axis

Part 14) What is the value of x? Round to the nearest tenth    

we know that

Applying the Pythagoras Theorem

[tex]x^{2}=10^{2}+12^{2}\\ \\x^{2}=244\\ \\x=15.6\ cm[/tex]

Part 15) Which set of side lengths defines a right triangle?

we know that

If the set of side lengths defines a right triangle, then must satisfy the Pythagoras Theorem

Verify each case

case A. 6, 8, 11

[tex]11^{2}=6^{2}+8^{2}\\ \\121=100[/tex]

Is not true

therefore

Is not a right triangle

case B. 5, 12, 13

[tex]13^{2}=5^{2}+12^{2}\\ \\169=169[/tex]

Is true

therefore

Is a right triangle

case C. 7, 9, 13

[tex]13^{2}=7^{2}+9^{2}\\ \\169=130[/tex]

Is not true

therefore

Is not a right triangle

case D. 6, 9, 11

[tex]11^{2}=6^{2}+9^{2}\\ \\121=117[/tex]

Is not true

therefore

Is not a right triangle

I only know number 9

9:0.70

8. 960 / 40 = 24

9. 7/10 = 0.7

10.   36.90

         7.35

Once added its sum is 44.25.

Answer:

-0.125

Step-by-step explanation:

The points on the graph referenced by the problem statement are ...

(x, y) = (-1, -0.25)

(x, y) = (1, -0.50)

The average rate of change between the two points is ...

(∆y)/(∆x) = (-0.50 -(-0.25))/(1 -(-1)) = -0.25/2 = -0.125

The average rate of change of the function shown on the interval [-1, 1] is -0.125.

Answer:

-0.125

Step-by-step explanation:

Answer:

After 3 hours, both the airplanes are at a distance of 938.9 meters from each other.

Step-by-step explanation:

Speed of plane A = 275 mph

Speed of plane B = 375 mph

Angle between their flight path = Ф = 55°

Let their paths after 3 hours make a triangle.

Path of plane A is side 'a' = 275*3 = 825

Path of plane B is side 'b' = 375*3 = 1125

Distance between both planes after 3 hours = side 'c'

Here, we have two sides and one angle of the triangle.

We can find the third side using the law of cosines which is given as:

c² = a² + b² - 2ab*cosФ

c² = 825² + 1125² - 2(825)(1125)(cos(55°))

c² = 680625 + 1265625 - 1064745             where cos(55°) = 0.5736

c² = 881,505

c = √881,505

c = 938.9

c = 938.9 meters