anyone have answer please

Answer:

a, ar, ar²,ar³,ar⁴...

i thinhk is C DONT NOW

Answer:

a. Only 68% of the students will fall in the range of 10- 2 and 10 + 2 hours.

Step-by-step explanation:

He appies the empirical 68-95-99.7 rule, where 68% of the data is expected to be within ne standard deviation from the mean, to the right and to the left.

Half of this (68%/2=34%) will be between the mean and one deviation standard to the right. This is between 10 hours and 10+2=12 hours.

The right answer is:

a. Only 68% of the students will fall in the range of 10- 2 and 10 + 2 hours.

Let’s give total students a number. Let’s say there are 800 total students

Men = x

Women = 7x. ( 7 times more)

Together there are 8x students.( 7x + x)

We have 8 x = 800

Divide both sides by 8

X = 100

100 men

700 women

Now find the fraction which is number of women / total students = 700/800 = 7/8

7/8 of the students are women.

Answer:

The price that maximizes the revenue is $15 per book.

Step-by-step explanation:

We have a demand that has a linear relation to price.

The two points we will use to calculate the demand function are:

We have the equation:

[tex]q=m\cdot p+b[/tex]

Then, we replace:

[tex]q(30)=0=m(30)+b\\\\q(10)=100=m(10)+b\\\\\\b=-30m\\\\100=10m+(-30m)=-20m\\\\m=-100/20=-5\\\\b=-30(-5)=150\\\\\\q(p)=-5p+150[/tex]

The revenue R can be calculated as the multiplication of price and quantity.

We can maximize R by deriving and equal that to 0:

[tex]R=p\cdot q=p(-5p+150)=-5p^2+150p\\\\\\\dfrac{dP}{dp}=-5(2p)+150=0\\\\\\-10p+150=0\\\\p=150/10=15[/tex]

The price that maximizes the revenue is $15 per book.

The price that will offer the maximum revenue would be as follows:

$15

What information do we have,

When Price = $10, Q = 100 Units

When Price = $ 30, Q = 0 units

With the above information, we can take the equation:

Q = Maximum (p + b)

by putting the values in both the above situations,

30 = 0 = m30 + b

10 = 0 = m10 + b

we get b = -30m. by putting this, we get

100 = 10m + (-30m) = -20m

∵ q(p) = -5p + 150

Through the equation and putting the above values, we get:

[tex]R = p.q.[/tex]

[tex]= p(-5p + 150)[/tex]

[tex]= -5p^2 + 150p[/tex]

$15 as the maximum price.

Thus, $ 15 is the correct answer.

Learn more about "Price" here:

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Answer:

Step-by-step explanation:

To evaluate 4P2, we will use the permutation formula as shown;

nPr = [tex]\frac{n!}{(n-r)!}[/tex]

4P2 = [tex]\frac{4!}{(4-2!}[/tex]

[tex]= \frac{4!}{2!} \\= \frac{4*3*2!}{2!}\\ = 4*3\\= 12[/tex]

4P2 = 12

Answer:

y = -2x - 1

Step-by-step explanation:

Step 1: Find the parallel line

y = -2x + b

Step 2: Solve for b

-3 = -2(1) + b

-3 = -2 + b

b = -1

Step 3: Write parallel equation

y = -2x - 1

Answer:

Hi there!

The correct answers are: A, B, D, E

Step-by-step explanation:

First of all, perpendicular means when two lines intersect to form a 90° angle.

Second ⊥ means perpendicular.

When something is a bisector it means it evenly slices a line in half.

Answer:

well the shape is acute so it will be quite low work out the opposite angles and you will find out that the lines are parallels there for meaning the answer is the lowest angle

Step-by-step explanation:

Answer:

[tex]x^{36}-x^{16}[/tex] is already at its simplest form

Step-by-step explanation:

You cannot factor or GCF anything out of it, and you cannot just subtract exponents. Therefore, it is simplified already.

Answer:

The Amin's score in math was 46.

Step-by-step explanation:

The question is:

The average math score for Amin, azman and aziz is 73. Azman marks 35 more than Amin while aziz is twice that of Amun. What is Amin's sign?

Solution:

Let us denote that:

x = Amin's score in math

y = Azman's score in math

z = Aziz's score in math.

The average of x, y and z is, 73.

That is:

[tex]\frac{x+y+z}{3}=73\\\\\Rightarrow x+y+z = 219[/tex]

Now it is provided that:

[tex]y=x+35...(i)\\z=2x...(ii)[/tex]

Use the equations (i) and (ii) to determine the value of x as follows:

[tex]x+y+z=219\\\\x+x+35+2x=219\\\\4x=184\\\\x=46[/tex]

Thus, the Amin's score in math was 46.

Answer:

14.3%

Step-by-step explanation:

There is only one four out of 7 total numbers.

1/7 = 0.142857 = 14.29%

We are given 7 numbers.

4 is only one card in that 7 card set so, 1/7.

1/7 = 0.1428

0.1428 * 100% = 14.28%

Therefore, the answer is roughly 14.3%

Best of Luck!

Hey there! :)

Answer:

a. 3

b. -22

c. -2

d. -2

e. 5a + 8

f. a² + 6a + 3

Step-by-step explanation:

Calculate the answers by substituting the values inside of the parenthesis for 'x':

a. f(1) = 5(1) - 2 = 3

b. f(-4) = 5(-4) - 2  = -22

c. g(-3) = (-3)² + 2(-3) - 5 = 9 - 6 - 5 = -2

d. g(1) = 1² + 2(1) - 5 = 1 + 2 -5 = -2

e. f(a+ 2) = 5(a+2) - 2 = 5a + 10 - 2 = 5a + 8

f. g(a + 2) = (a + 2)² + 2(a + 2) - 5 = a² + 4a + 4 + 2a + 4 - 5 =

a² + 6a + 3

Answer:

Step-by-step explanation:

a) All of the arcs show point A is the center of rotation.

__

b) The angle marked at point A is 90°.

__

c) The arrows indicate the direction of rotation is counterclockwise.

Answer:

At a plus or minus 5%

Her claim is wrong

Step-by-step explanation:

Ok..

Let's calculate the total amount of result first.

6 +14+22+8+4= 54.

Let's take the percentage of each.

For A

6/54= 0.11

11.1%

11.1%*5%= 10.5

For B

14/54

=0.25925

= 25.9%

25.9%*5%= 24.605

For C

22/54

0.4074

40.7%

40.7*5%= 42.73%

For D

8/54

= 0.148

14.8%

14.8%*5% = 14.06%

For E

4/54

= 0.074

= 7.4%

7.4%*5%=7.77%

But she suggested

10% A's, 23% B's, 45% C's, 14% D's, and 8% F's

Answer:

When drawing a rectangle the point of origin is P = xy and the 0 be upon the positive x axis back to P this way we have a rectangle length.

The circle is inscribed in the middle of the rectangle.

Step-by-step explanation:

0,6  as this is 1/6th of circle

9,45 as this is 3/9th of a circle

36, 22.5 as this is 5/10 of a circle

-27, -16.5 as this is   7/10 of a circle

When we join up -27 to 0 with the end line of a rectangle the base, we find it is at point for -16 for y and joined to 6 at y and has formed 10/10 of a circle.

This is not correct but may help as they are in proportion.

Answer:

  110°

Step-by-step explanation:

Adjacent angles in a parallelogram are supplementary:

  ∠L +∠O = 180°

  (2x +10) +(x +20) = 180

  3x = 150 . . . . . . . . . . . . . subtract 30

  x = 50

Then ...

  ∠L = (2x +10)° = (2·50 +10)° = 110°

Opposite angles in a parallelogram are congruent, so ...

  ∠N = ∠L = 110°

The measure of ∠N in parallelogram LMNO is 110°.

What is a parallelogram?

A parallelogram is a quadrilateral (has four sides and four angles) in which opposite sides are equal and parallel.

In parallelogram LMNO:

∠L + ∠O = 180° (corresponding angles add up to 180°)

Hence:

(2x + 10) + (x + 20) = 180

x = 50°

∠N = ∠O (opposite angles are equal)

∠N = 2(50) + 10 = 110°

The measure of ∠N in parallelogram LMNO is 110°.

Find out more on parallelogram at: https://brainly.com/question/970600

Answer:

a) 0.0026

P- value is 0.0026

Step-by-step explanation:

Step(i):-

Given data

first sample size n₁= 80

mean of the first sample  x⁻₁= $6.75

Standard deviation of the first sample   (σ₁) = $1.00

second sample size (n₂) = 60

mean of the second sample( x₂⁻) = $6.25

Standard deviation of the second sample (σ₂) = $0.95

step(ii):-

Test statistic

[tex]Z = \frac{x^{-} _{1} -x^{-} _{2} }{\sqrt{\frac{(S.D)_{1} ^{2} }{n_{1} } +\frac{(S.D)_{2} ^{2} }{n_{2} } } }[/tex]  

  Null Hypothesis :H₀: There is no significant difference in wages across the two employers.

x⁻₁= x₂⁻

Alternative Hypothesis :H₁: There is significant difference in wages across the two employers.

x⁻₁≠ x₂⁻

[tex]Z = \frac{6.75 -6.25 }{\sqrt{\frac{(1^{2} }{80 } +\frac{((0.95)^{2} }{60} } }[/tex]

Z = 3.01

P- value:-

Given data is two tailed test

The test statistic Z = 3.01

First we have to find the Probability of z-statistic

P(Z>3.01) =  1- P( z <3.01)

                 = 1- (0.5 + A(3.01)

                = 0.5 - A(3.01)

             =    0.5 - 0.49865   ( from normal table)

             = 0.0013

P(Z>3.125) = 0.0013

Given two tailed test

   P- value = 2 × P( Z > 3.01)

                 = 2 × 0.0013

                = 0.0026

Final answer:-

The calculated value Z = 3.125 > 1.96 at 0.05 level of significance

null hypothesis is rejected

Conclusion:-

P- value is 0.0026

Answer:

Th computed value of the test statistic is 3.597

Step-by-step explanation:

The null and the alternative hypothesis is as follows:

Null Hypothesis:

[tex]\mathbf{H_o:}[/tex] the population correlation coefficient is equal to zero

[tex]\mathbf{H_a:}[/tex] the population correlation coefficient is not equal to zero

The test statistics for Pearson correlation coefficient is thus computed as :

[tex]t =\dfrac{r \sqrt{(n-2)}} { \sqrt{(1-(r)^2)} }[/tex]

where;

r = correlation coefficient = 0.60

n = sample size = 25

So;

[tex]t =\dfrac{0.60 \sqrt{(25-2)}} { \sqrt{(1-(0.60)^2)} }[/tex]

[tex]t =\dfrac{0.60 \sqrt{(23)}} { \sqrt{(1-0.36} }[/tex]

[tex]t =\dfrac{0.60 *4.796} {0.8}[/tex]

t = 3.597

Comparing to a critical value of t (23 degrees of freedom two-tailed value) = 2.069

Decision Rule:

Since computed value of t is greater than the critical value of t; We reject the null hypothesis and accept the alternative hypothesis.

Conclusion:

We conclude that the population correlation coefficient significantly differs from 0 at 5% (0.05) level of significance.

Answer:

2,095,636,800,000 possible passwords.

Step-by-step explanation:

There are:

26 lower case characters.

10 decimal digits.

Passwords with 6 characters:

The first character must be a lower case letter, so 26 possible outcomes.

Any of the other 6 - 1 = 5, there are 36 possible options. So

[tex]T_{6} = 26*36^{5} = 1572120576[/tex]

Passwords with 7 characters:

Same logic as above, just the last 6 with 36 possible options. So

[tex]T_{7} = 26*36^{6} = 56596340736[/tex]

Passwords with 8 characters:

7 with 36 possible options

[tex]T_{8} = 26*36^{7} = 2037468300000[/tex]

Total:

[tex]T = T_{6} + T_{7} + T_{8} = 1572120576 + 56596340736 + 2037468300000 = 2095636800000[/tex]

2,095,636,800,000 possible passwords.

Answer:

9

Step-by-step explanation:

Since the scale factor is 12/8 = 1.5, to find LA we have to multiply FI by 1.5 which is 6 * 1.5 = 9.

The process used to collect data will affect the validity and the bias of the study.

The way data is gathered is very important for making sure a study is accurate and doesn't have any unfair influences. Validity means how well the information collected correctly shows the things the study is trying to find out. If the way data is collected is not done correctly, it can cause incorrect or untrustworthy results, making the study less reliable

Bias means when we make mistakes or go away from the correct value or truth. If the way we collect data is biased, it can lead to unfair outcomes or favor certain groups.

Learn more about validity  from

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Answer:

y=(5/2)x-3

Step-by-step explanation:

slope of the line=(y2-y1)/(x2-x1)=(-3-2)/(0-2)=5/2

use any point to get the line:

y-(-3)=(5/2)(x-0)

y=(5/2)x-3

Answer:

Correct options are F and D.

Step-by-step explanation:

First, the slope. 5-(-5)/-4-1

This can be simplified to 10/-5, or -2.

Y intercept: (0, -3).

Slope intercept form: y=-2x-3

Point slope: y-5=-2(x+4) or y+5=-2(x-1)

Answer:

4 over 28 = 1 over 7

Step-by-step explanation:

28 divided by 4 = 7

4 divided by 4 = 1

so 1 over 7

Answer:

Sea Lion, fish, Bird

Step-by-step explanation:

Find the absolute value of the animals, and then compare them from least to greatest

Answer:

  6 seconds

Step-by-step explanation:

The area of interest increases from 4 square feet to 16 square feet, an increase of 12 square feet. Since the area increases by 2 square feet each second, the time required for it to increase 12 square feet is ...

  (12 square feet)/(2 square feet/second) = 6 seconds

Answer:

x= 70

Step-by-step explanation:

Rectangles have four right angles (angles of 90 degrees).

The point of intersection of the diagonals divides each one of them into two equal parts.

Knowing this, we can conclude that:

m\angle c=m\angle b=55\°

Therefore, since the sum of the interior angles of a triangle is 180 degrees, we can find the value of "x":

x+m\angle c+m\angle b=180\°\\x=180\°-55\°-55\°\\x=70\°

Answer:

P = 0.006

Step-by-step explanation:

If the first team have a probability of 0.9 to complete the task, we can said that the probability to not complete the task in time is 0.1. It is calculated as:

1 - 0.90 = 0.1

At the same way, the probability to not complete the task for the second and third team are 0.2 and 0.3 respectively and they are calculated as:

1 - 0.80 = 0.2

1 - 0.70 = 0.3

Finally, the the probability that the task will NOT be completed in time is the probability that any of the teams completed the task. So, it is equal to:

P = 0.1 * 0.2 * 0.3 = 0.006

Answer:

Check Explanation

Step-by-step explanation:

The volume of concrete required to build the bridge is missing and should be provided.

In its absence, let us assign a letter to it.

Let the volume of concrete required to build the bridge be V ft³.

And we further assume that the concrete is the only major material needed to build the bridge for the sake of our question.

Density = (mass/volume)

Density = 150 lb/ft³

Mass = ?

Volume = V ft³

Mass = (Density) × (Volume)

Mass of concrete required = 150 × V = (150V) lb

Cost of concrete is 0.80 per lb

1 lb of concrete costs 0.80

150V of concrete will cost 150V × 0.80 = (120V) currency amount.

Now, depending on the value of V, we can now determine if the city planning commission (cpc) can afford the bridge.

If 120V > 300,000 budget, the cpc cannot afford the bridge, but if 300,000 budget > 120V, then the cpc can afford the bridge.

Hope this Helps!!!