(04.03 MC)
A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days:

f(n) = 8(1.05)n

Part A: When the scientist concluded his study, the height of the plant was approximately 11.26 cm. What is a reasonable domain to plot the growth function? (4 points)

Part B: What does the y-intercept of the graph of the function f(n) represent? (2 points)

Part C: What is the average rate of change of the function f(n) from n = 2 to n = 6, and what does it represent? (4 points)

(10 points)

Answers

Answer 1

Answer:

A) 0 ≤ n ≤ 7

B) initial height of plant = 8 cm

C) average rate of change = 0.475 cm/day.  

Plant grew an average of 0.475 cm per day from day 2 to day 6

Step-by-step explanation:

[tex]f(n)=8(1.05)^n[/tex]

Part A

Given height = 11.26 cm

[tex]\implies 8(1.05)^n=11.26[/tex]

[tex]\implies(1.05)^n=\dfrac{11.26}{8}[/tex]

[tex]\implies(1.05)^n=1.4075[/tex]

Taking natural logs:

[tex]\implies \ln(1.05)^n=\ln(1.4075)[/tex]

[tex]\implies n\ln(1.05)=\ln(1.4075)[/tex]

[tex]\implies n=\dfrac{\ln(1.4075)}{\ln(1.05)}[/tex]

[tex]\implies n=7.005819448[/tex]

[tex]\implies n \approx7[/tex]

Therefore, the scientist concluded his study after 7 days, so the domain is 0 ≤ n ≤ 7

Part B

y-intercept is when the curve intersects the y-axis (when n = 0):

[tex]\implies f(0)=8(1.05)&^0=8\times1=8[/tex]

The y-intercept represents the initial height of the plant, which is 8 cm

Part C

Rate of change = change in y ÷ change in x

⇒ rate of change = change in f(n) ÷ change in n

[tex]\implies f(2)=8(1.05)^2=8.82[/tex]

[tex]\implies f(6)=8(1.05)^6=10.72076513...[/tex]

[tex]\implies \textsf{rate of change} \ =\dfrac{f(6)-f(2)}{6-2}=0.4751912813...[/tex]

So the average rate of change was 0.475 cm/day.  This indicates that the plant grew an average of 0.475 cm per day from day 2 to day 6 (over a period of 4 days).

ETA: please see attached graph.  The gray dotted curve is the function, and the black solid curve is the function with the restricted domain of 0≤n≤7 since the study took 7 days.

(04.03 MC)A Scientist Is Studying The Growth Of A Particular Species Of Plant. He Writes The Following

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It is D
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Given A = [ 8 -3 3 y+2] , B= [3x z+4 w 1/2y], C=[ x 2z 4 y] What is the value of matrix B if A + B = C

Answers

Answer:

[-4,1,1,-4]

Step-by-step explanation:

GUYS PLEASE HELP!!!!! if u can also explain how u got the answer
x =
3
7
1

Answers

Answer:

x = 3

Step-by-step explanation:

By tangent secant segment theorem:

[tex]x \times 12 = 4 \times 9 \\ \\ \implies \: 12x = 36 \\ \\ \implies \: x = \frac{36}{12} \\ \\ \implies \: x = 3[/tex]

Answer:

x=3

Step-by-step explanation:

Dwayne buys a new smartphone for $719.76. He agrees to pay for it monthly, with 24 equal payments.
How much does he pay each month for the smartphone?

Answers

Answer:

$29.99

Step-by-step explanation:

24 equal payments represent 24 months (as it is paid monthly), therefore, you divide by 24 to get only 1 month of the payment

719.76/24

=29.99

Multiply the following complex numbers:
(9-21)(7 +61)
A. 51 + 407
B. 51 - 401
C. 75 + 40/
D. 75 - 407

Answers

Do you know what the first step is

What is an angle that is adjacent to IDH ?

Answers

Answer:

Angle EDC

Step-by-step explanation:

Since angle IDH is perpendicular, that should mean that the other angle should be the same as angle IDH.

If this did not help, let me know.

If it did, your welcome! :)

What is the slope
So technically this is the graph I picked a random answer but I dibt get how the slope is 4 can you guys please explain

the answer I got was 4​

Answers

Answer:

4

Step-by-step explanation:

We can use the y-y/x-x formula.

We need to find two points that are a whole number.

(0,10) -- 0 is the x coordinate, 10 is the y coordinate.

(20,90) -- 20 is the x coordinate, 90 is the y coordinate.

10-90 = -80

0-20 = -20

-80/-20 as a whole number is 4.

The slope is 4.

Trisha and Yoshi are at the start of
a trail. Trisha walks 500 feet
before Yoshi starts. Trisha walks
350 feet per minute, and Yoshi
walks 430 feet per minute.

Answers

Answer:

If youre asking how long it will take for Yoshi to catch up look below

Step-by-step explanation:

Yoshi walk 80 feet per minute faster than Trisha

If Trisha walks for 5 minutes she would have walked 2250 feet

If Yoshi also walks for 5 minutes he would have walked 2150 feet

Now this is already pretty close so lets check for 7 minutes

If Trisha walks 7 minutes she would have walked 2950 feet

if Yoshi walks 7 minutes he would have walked he would have walked 3010 feet

Now this is really close but now yoshi is ahead.. so lets go down to 6.85 feet

If Yoshi walks 6.85 minutes he would have walked 2945.5 feet

this is still a LITTLE to low so lets do 6.86

If yoshi walks 6.86 minutes he would have walked 2949.8

Rounding up he would have caught up by now

so it would take Yoshi 6.86 minutes to catch up

The test scores of a geometry class are given below. 90, 75, 72, 88, 85 The teacher wants to find the variance for the class population. What is the value of the numerator of the calculation of the variance? Variance: sigma squared = StartFraction (x 1 minus mu) squared (x 2 minus mu) squared ellipsis (x N minus mu) squared Over N EndFraction -160 -6 16 258.

Answers

The value of the numerator of the calculation of the variance is 258, the correct option is D.

Given

The test scores of a geometry class are given below. 90, 75, 72, 88, 85.

What is a variance?

Variance is the expected value of the squared variation of a random variable from its mean value, in probability and statistics.

The mean of the test scores of a geometry class is;

[tex]\rm Mean = \dfrac{90+75+72+88+85}{5}\\\\ Mean =\dfrac{ 410}{5}\\\\Mean =82[/tex]

The variance is given by;

[tex]\rm Variance =\dfrac{(90 - 82)^2 + (75 - 82)^2 + (72 - 82)^2 + (88 - 82)^2 + (85 - 82)^2}{5}\\\\Variance = \dfrac{8^2+7^2+(-10)^2+6^2+3^2}{5}\\\\Variance=\dfrac{64+49+100+36+9}{5}\\\\Variance = \dfrac{258}{5}[/tex]

Hence, the value of the numerator of the calculation of the variance is 258.

To know more about variance click the link given below.

https://brainly.com/question/7635845

Answer:

Step-by-step explanation:

d

James has a 6-ft board that is 24 in. wide. He wants to cut it into five pieces to make a small bookshelf with two shelves. The front and back will not be covered. What should the dimensions of the bookshelf be to maximize the volume and use all of the 6 ft board?

Answers

Answer:

width=x, length = y

(in ft)

3x + 2y = 6y>x

y = 1.5 , x= 1

1ft = 12 in 1.5ft = 18in

Please I really need some help please please 30 points please
30 points
30 points
30 points
Please help
Please don’t answer if you don’t know how to or understand the question please









Two runners are racing against each other. Jeri graphs a linear equation for each runner that shows
the runner's distance from the starting line over time. The two equations form a system that has
infinitely many solutions. Describe the intersection point(s) of the lines and explain what the
solution means in this situation.

Answers

Answer:

If the graphs of the equations are the same, then there are an infinite number of solutions that are true for both equations. the intersection points (-3,3) Since the system is infinite it means there is 1 lone on the graph-

Step-by-step explanation:

How many cubic centimeter blocks are in the bottom layer of the prism shown below?

Answers

its 12

Step-by-step explanation:

How long is the arc intersected by a central angle of StartFraction pi Over 2 EndFraction radians in a circle with a radius of 4. 5 cm? Round your answer to the nearest tenth. Use 3. 14 for Pi.

Answers

The arc is the product of the angle and radius of the circle. Then the arc length is 7.065 cm.

What is a circle?

It is a locus of a point drawn at an equidistant from the center. The distance from the center to the circumference is called the radius of the circle.

The central angle of π/2 radians in a circle with a radius of 4.5 cm.

The arc is given as the product of the angle and radius of the circle.

[tex]\rm Arc \ length = Angle * Radius\\\\\\Arc \ length = \dfrac{\pi}{2} * 4.5\\\\\\Arc \ length = \dfrac{3.14}{2} * 4.5\\\\\\Arc \ length = 7.065[/tex]

The arc length is 7.065 cm.

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https://brainly.com/question/11833983

what is the product of 4/7 and 4/6?

Answers

Product = result of a multiplication problem

4/7 x 4/6 = 8/21 (0.38095)

4 x 4 = 16
7 x 6 = 42

16/42 = 8/21

Which statement is true?
A All rhombuses are similar.
® All rectangles are similar.
© All isosceles trapezoids are similar.
© All isosceles right triangles are similar.

Answers

Answer:

All rhombuses are similar.

v=u + at
u= 2
a = -5
t = Î
2
Work out the value of v.

Answers

Answer:

Step-by-step explanation:

a = 5 n, Î = 5 n, t = -2 n, u = 5 n, n element Z

Mikey worked 8 hours on Wednesday, 6 hours on Thursday, and 7 hours on Friday. His gross pay for all three days was $187.95. What was his hourly rate

Answers

Answer:

$8.95

Step-by-step explanation:

8 + 6 + 7 = 21

$187.95 divided by 21 = $8.95

Rule: subtract 2 from x to get y

Answers

Answer:

x-2=y

Step-by-step explanation:

I have written the equation for the statement.

x-2 is subtract 2 from x than =y on the end

On the grid shown, each grid line represents one mile. What is the shortest distance, to the nearest tenth of a mile, between Hillburn and Dunford?

Answers

Answer:

5.1

Step-by-step explanation:

You just have to count up and thats the closest number

Can someone please help me

Answers

Answer:

sqrt(241) or about 15.52 rounded

Step-by-step explanation:

a^2+b^2=c^2

4^2+15^2=c^2

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HELP! I DONT UNDERSTAND , I NEED TO TURN IT IN BY TOMORROW MORNING

Answers

Is there any question associated with this graph ?

teh face of a circular game token has an area of 10pi cm to the second power. what is the diameter of the coin token. round to the nearest hundredth of a centimeter

Answers

Answer:

6.32 cm

Step-by-step explanation:

Area of a circle = [tex]\pi r^2[/tex]   (where r is the radius)

Given area = [tex]10\pi[/tex] cm²

⇒ [tex]10\pi=\pi r^2[/tex]

[tex]\implies 10=r^2[/tex]

[tex]\implies r=\sqrt{10}[/tex]

Diameter = 2r    (where r is the radius)

[tex]\implies d=2r=2\sqrt{10}=6.32[/tex] cm (nearest hundredth)

Area of a circle = [tex]πr²[/tex]

Given area = [tex]10π cm²[/tex]

[tex]\bold\red{ ⇒} 10π = πr²[/tex]

[tex]\bold\red{⇒ } 10 = r²[/tex]

[tex]\bold\red{⇒ } r = \sqrt{10}[/tex]

Diameter = [tex]2r[/tex]

[tex]\bold\red{⇒}2\sqrt{10} =\bold\pink{6.32 cm} [/tex] [tex]\bold\green{ [nearest \: hundredth]}[/tex]

Help me please asap


Rectangle W XYZ is shown
W
Z
If WY = 5m + 11 and XZ = 9m - 7. what is the value of m? Enter the answer in the box in decimal form. Use"" for the decimal point.
m

Answers

Answer:

M= 4.5

Step-by-step explanation:

take 5m+11 = 9m - 7

add seven to each side to get

5m + 18 = 9m

then subtract 5m from each side

18= 4m

then divide by 4

18÷4= 4.5

PLEASE HELP ASAP WILL GIVE BRAINIEST ANSWER

Answers

Answer:

Step-by-step explanation:

rise / run is another way of expressing the tangent.

So when you are told that the rise over run is 35% you mean the rise is 35% of the run.

Another way of expressing this is by saying Tan(theta) = 0.35

theta = tan-1(0.35)

theta = 19.29 degrees.

The answer is A. You can reason this out. 19 degrees is the smallest answer. If it was any larger, do you think an 18 wheeler would be able to make the grade? Likely not.

How do I solve this, it's not 10

Answers

Answer:

26.7

Step-by-step explanation:

This is the answer because 26.7/20 = (16+26.7)/32

When two triangles are similar, it means their sides are also proportional. The reason why it is not ten is because you need to add 10 to 16 to the large triangle as well, which no longer makes it proportional.

To solve, you create a formula.

(16+x)/32=x/20

Multiply both sides by 32 to get rid of the 32 in the left side.

16+x=32x/20

Multiply both sides by 20 to get rid of the 20 right side.

320+20x=32x

-20x on both sides to get all the variables on one side and all the nukbers on the other.

320=12x

Divide both sides by 12 to get x by itself

x=26.66667

The angles of a triangle are described as follows: angle a is the largest angle; its measure is twice the measure of angle b. The measure of angle c is 2 less than half the measure of angle b. Find the measure of the three angles in degrees

Answers

Answer: 24, 52, and 104 degrees

Step-by-step explanation:

A ball is dropped from a height of 64 feet. Its height, in feet, can be modeled by the function h(t) = -167 + 64, where t is the time in seconds since it is dropped.
(a) Find how long it takes the ball to reach the ground.
(b) Find how long it takes the ball to fall 36 feet. (Hint: first find its
height.)

Answers

Answer:

Step-by-step explanation:

Known facts:

the ball dropped from a height of 64 feetfunction [tex]h(t) = -16t^{2} + 64[/tex]

First question:

the ball hits the ground when h(t) = 0, thus we get the equation

                      [tex]-16t^{2} +64 = 0\\16t^{2} = 64\\t^{2} =4\\t = 2[/tex]

     So the ball hits the ground in 2s

Second question

to find how long it takes the ball to fall 36 feet, we must set h(t) = 64 - 36 = 28

                      [tex]-16t^{2} +64 = 28\\16t^{2} = 36\\t = \frac{6}{4} =1.5s[/tex]

      So the ball hits the ground in 1.5s

Hope that helps!

HELP ASAP

A. Less then one gallon
B. Between 1 and 2 gallons
C. Between 2 and 3 gallons
D. More than 3 gallons

Answers

Answer:

1/4 each day would be 1 gallon every 4 days so for 5 days it would be 1 and 1/4 gallons so between 1-2 B

Step-by-step explanation:

I really really really really need help with this question

Answers

Answer:

When rotating any polygon 90 degrees, each vertice/point of the polygon should be changed from (x, y) to (y, -x). Because of this, E(-7, -4) should be E'(-4, 7), F(-2, -1) should be F'(-1, 2), and G(-5, -8) should be G'(-8, 5) after the rotation.

Step-by-step explanation:

Like I explained above, when rotating a shape 90 degrees clockwise on a plane, the points change from (x, y) to (y, -x). The student changed each point from (x, y) to (-y, x), which is a 90 degree counterclockwise rotation. That is why the student is incorrect.

I hoped this helped! Sorry, I am terrible at explaining things. :)

Giving brainlyist to the first person to answer correctly and having a complete answer.

Answers

Answer:

25

Step-by-step explanation:

2400 dived by 96 is 25

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