On the first four​ exams, Steve's grades are 70​, 76​, 88​, and 92. There is still one more exam and he is hoping to earn a B in the course. This will occur if the average of his first five exam grades is greater than or equal to 80 and less than 90. What range of grades on the fifth exam will result in earning a​ B?
The range of grades on the fifth exam that results in earning a B is ___? If the highest grade is​ 100, then
_____.

Answers

Answer 1
Final answer:

The range of grades on the fifth exam that will result in Steve earning a B in the course is 74 to 100 inclusive, as he needs at least a 74 to bring his average up to 80, and any score above 100 is not possible.

Explanation:

To calculate the range of grades on the fifth exam that will ensure Steve earns a B in the course, we need to determine what final score on the fifth exam will result in an average between 80 and 90 for all five exams.

Let's first add up the scores from Steve's first four exams:

70 + 76 + 88 + 92 = 326

To achieve an average of at least 80, the total sum of all five exam grades must be at least 400 (because 80 is the minimum average for a B, and 80 times 5 exams equals 400). So, the minimum score Steve needs on the fifth exam is:

400 - 326 = 74

Steve needs at least a 74 on the fifth exam to achieve an average of 80. If we want to ensure the average does not reach 90, the total sum of all five exam grades must be less than 450 (because 90 times 5 exams equals 450). The highest score Steve can get on the fifth exam and still remain in the B range is:

450 - 326 = 124

However, since Steve cannot score more than 100 on the fifth exam, the maximum score remains capped at 100.

Therefore, the range of grades on the fifth exam that will result in earning a B is 74 to 100 inclusive.


Related Questions

Katie has 6500 in her savings account. If it earns 6% interest every month how much savings does she have in her account in over half a year

Answers

Step-by-step explanation:

First, you recognize the algorithm for the equation: A=P(1+r)^n. This is the algorithm for interest. P is the amount of initial money (in this case, 6500), r is the interest rate (6%, or 0.06), and n is the number of times it is being compounded. Since half a year is given to me, 6 months is what I will be using, or just 6.

Next, plug in the numbers. The equation is now: A=6500(1+0.06)^6.

Now time to solve. First add what's in the parenthesis, and put it to the power of 6, for 6 months. Then multiply that amount to the initial dollar amount; 6500. This will leave you with 9,220.37.

simplify the numerical expression 5-2+12÷4​

Answers

it is 3r.75 it totally right

Answer:

6

Step-by-step explanation:

Just remember the order of operations (PEMDAS)

5 - 2 + 12 / 4, first divide

5 - 2 + 3, then proceed from left to right

3 + 3 = 6

The circumference of a circle is 157 centimeters. What is the area of the circle in terms
of t?
A
7.570 cm?
B
157 cm
C
D
56.251 cm
2257 cm

Answers

The radius of the circle is approximately 7.5 cm, and the corresponding area is approximately 56.25π cm², as calculated using the formulas for circumference and area. Here option C is correct.

1: Find the radius using the circumference formula

We know the circumference C = 157 cm.

We also know the formula for circumference of a circle: C = 2πr, where r is the radius.

Rearranging the formula to solve for r, we get: r = C / (2π).

Substituting C with 157, we get: r = 157 / (2π) ≈ 7.5 cm.

2: Calculate the area using the area formula

Now that we know the radius, we can use the formula for the area of a circle: A = πr², where A is the area.

Substituting r with 7.5, we get: A = π * (7.5)² ≈ 56.25π cm².

Therefore, the area of the circle is 56.25π cm². Here option C is correct.

Complete question:

The circumference of a circle is 157 centimeters. What is the area of the circle in terms of t?

A - 7.570 cm?

B - 157 cm

C - 56.251 cm

D - 2257 cm

4(4)
4(5)
4(6)
4(7)
4(8)
4(9)
4(10)

Answers

Answer:

4(4)= 16

4(5)= 20

4(6)=24

4(7)= 28

4(8)= 32

4(9)= 36

4(10)= 40

Step-by-step explanation:

The circumference of a circle is 8π cm. What is the circle's area? 32 π cm 2 16 π cm 2 8 π cm 2 64 π cm 2

Answers

Answer:

16[tex]\pi[/tex]

Step-by-step explanation:

we know that the formula for finding area of circle is A=[tex]\pi[/tex]r^2. and circumference of circle can be calculated by c=2[tex]\pi[/tex]r.

first we need find radius from circumference formula and put in area formula to get the desired result.

for radius, r=c/2[tex]\pi[/tex] =8[tex]\pi[/tex]/2[tex]\pi[/tex] we get 4. now put in area formula as shown above.

we get , A=[tex]\pi[/tex]*(4)^2 =[tex]\pi[/tex]*4*4 =16[tex]\pi[/tex]

Answer:

The answer is B 16

Step-by-step

a coast redwood tree is about 10 times as tall as an apple tree one of the tallest coast redwood even measured was 254 feet fall how tall would you expect an apple tree to be ​

Answers

Answer:

25.4 feet tall

Step-by-step explanation:

254 divided by 10 equals 25.4

The height of the apple tree that you expect an apple tree to be ​25.4 feet.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

A coast redwood tree is about 10 times as tall as an apple tree.

Let 'x' and 'y' be the height of redwood and apple trees. Then the equation is given as,

y = x / 10

One of the tallest coast redwoods even measured 254 feet tall. Then we have

y = 254 / 10

y = 25.4 feet

The height of the apple tree that you expect an apple tree to be ​25.4 feet.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ5

^^^!!! 25 pOinTs (seriously help)

Answers

Answer:

A)   Θ = 2A/r²

Step-by-step explanation:

A = Θr²/2

(Multiple both sides by 2)

2A = Θr²

(Divide both sides by r²)

2A/r² = Θ

What is the volume of the rectangular prism?

Answers

Answer:

144 ft cubed

Step-by-step explanation:

Multiply 576 by 1/4.

576 x 1/4 = 144

Answer:

[tex]9ft^{3} [/tex]

Step-by-step explanation:

If each cube has an edge length of 1/4;

[tex] \frac{1}{4} \times \frac{1}{4} \times \frac{1}{4} = \frac{1}{64} [/tex]

Each cube has a volume of 1/64 feet cubed. Now, multiply by 576.

[tex] \frac{1}{64} \times \frac{576}{1} = \frac{576}{64} [/tex]

[tex]576 \div 64 = 9[/tex]

The rectangular prism has a volume of 9 feet cubed.

What are the x-intercept and vertex of this quadratic function?
g(x)=-5(x – 3)^2

Answers

There is only one X-Intercept at (3,0)
and the vertex happens to be at the same Coordinate (3,0)

If you wouldn’t mind helping me I would greatly appreciate it. I’ve been having trouble on problems like this, and I have no one around to help, so I would be extremely grateful if you took the time out of your day to help me.

Andrea makes and sells anklets. She will discount the regular selling price of the anklets 60% this weekend. Which value is equivalent to this percent?
A. 3/5
B. 3/10
C. 6/8
D. 6/100

Answers

A.3/5 jehevdhe egecsgcsg feud

Solve for n
5n - 3 = 17

Answers

Answer: n=4

Step-by-step explanation:

1) add 3 to both sides: 5n=20

2) divide by five on both sides: 5n/5 and 20/5

3) answer n=4

Answer:

17+3=20

20/5 = 4

5(n)-3 + 17

5(4) - 3 = 17

20-3 = 17

n = 4

Step-by-step explanation:

What is the value of X?

Answers

The two given angles are vertical angles and equal each other:

3x + 50 = 6x -10

Now solve for x:

Subtract 3x from both sides:

50 = 3x -10

Add 10 to both sides:

60 = 3x

Divide both sides by 3

X = 20

A circle has a radius of 13 inches.
Which equation can be used to find the diameter of this circle?
od=21(13)
ed= }(13)
od=2(13)
d=13²
Please help me!

Answers

Answer:

od=2(13)

Step-by-step explanation:

Diameter of a circle is two times of its radius.

Answer: It wouldn’t be 13 to the second power you have to divide 13 by 2 then do that by the second power 13/2=6.5 than 6.5 to the second power so it would be 13x3.14=40.82

Step-by-step explanation:

Algebra 1, Section 7.09

Answers

Answer:

b. 4

Step-by-step explanation:

Given f(x) = 4x - 4 and g(x) = x - 1, we can find (f/g)(x) by dividing f(x) by g(x):

(f/g)(x) = (4x - 4)/(x - 1)

Now, substituting x = -4 into the expression

(f/g)(-4) = (4*(-4) - 4)/((-4) - 1) = (-16 - 4)/(-5) = -20/-5 = 4

Therefore, the correct answer is b. 4.

Given the function g(x) = x - 1, let's solve (f/g)(-4) using the function f(x) = 4x - 4.

To find (f/g)(-4), we need to evaluate the expression (f(x)/g(x)) at x = -4.

First, let's find the value of f(x)/g(x) for any x:

(f/g)(x) = f(x)/g(x) = (4x - 4)/(x - 1)

Now, substituting x = -4 into the expression:

(f/g)(-4) = (4(-4) - 4)/((-4) - 1) = (-16 - 4)/(-5) = -20/-5 = 4

Therefore, the correct answer is b. 4.

what is 10 times as much as 400

Answers

Answer:

Your answer would be 4000.

The only step needed:

Multiply 400 by 10.

400 ---> 400×10 ---> 4000

Hope this helps, :)

Find the range f(x) =-2x-5 for the domain (-2,-1,1,2).

Answers

Answer:

{ - 9, - 7, - 3, - 1 }

Step-by-step explanation:

To obtain the range substitute the values of x from the domain into f(x)

f(- 2) = - 2(- 2) - 5 = 4 - 5 = - 1

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

f(1) = - 2(1) - 5 = - 2 - 5 = - 7

f(2) = - 2(2) - 5 = - 4 - 5 = - 9

range is { - 9, - 7, - 3, - 1 }

Rachel joggled along a trail that was 1/4 of a mile Long she jogged along the trail eight times how many miles did Rachel jog in all

Answers

Answer:

2

Step-by-step explanation:

1/4 times 8 = 2

Answer: She jogged 2 miles

Step-by-step explanation: 1\4 x 8 which will give you 8\4, then you simplify it and you get 2.

Which of the following coordinate points is the point of intersection of these two lines? y - 6x = -4 y - 2x = 8 Question 4 options: (−1/2, 7) (12/8,11) (9/6,5) (3, 14)

Answers

Option D: [tex](3,14)[/tex] is the point of intersection of the two lines.

Explanation:

The two equations are [tex]y-6 x=-4[/tex] and [tex]y-2 x=8[/tex]

We need to find the point of intersection of the two lines.

Thus, let us solve the equation by substitution method.

From the equation [tex]y-6 x=-4[/tex], we shall determine the value of y, by adding both sides of the equation by 6x.

Hence, we have, [tex]y=6x-4[/tex]

Now, substituting [tex]y=6x-4[/tex] in the equation [tex]y-2 x=8[/tex] , we get,

[tex]6x-4-2 x=8[/tex]

       [tex]4x-4=8[/tex]

             [tex]4x=12[/tex]

               [tex]x=3[/tex]

Substituting [tex]x=3[/tex] in the equation [tex]y-6 x=-4[/tex], we get,

[tex]y-2 (3)=8[/tex]

   [tex]y-6=8[/tex]

         [tex]y=14[/tex]

Thus, the point of intersection of the two lines is [tex](3,14)[/tex]

Therefore, Option D is the correct answer.

Which is the rate of change for the interval between 2 and 6 on the x-axis?


–3

-one-third

one-third

3

Answers

Answer:

3

Step-by-step explanation:

I think you misses attaching the photo, so please have a look at my photo for your better understanding.

We know the formula for rate of change of the  parabola line:

[tex]\frac{f(b)- f(a)}{b-a}[/tex]

Given here:

a= 2 => f(a) = 2

b=6 => f(b) = 2

Substitute all the values into the function, we have:

[tex]\frac{14-2}{6-2} = 3[/tex]

So the rate of change is 3

Answer:

D.) 3

Step-by-step explanation:

Got it right on the assignment

Solve the inequality for x 5(x-10) < 115

Answers

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form:

x<33

Interval Notation:

(−∞,33)

If x varies inversely as y, and x = 7 when
y=3, find y when x = 9.

Answers

Step-by-step explanation:

x=k/y------(1)

k=xy

k= 7×3

k=21

from equation 1

x=k/y

y=k/x

y=21/9

y = 2.33

Answer:

3.85714285714

Step-by-step explanation:

7 = 3

9 = y

9*3=27

27/7 = 3.85714285714

two different fractions where the LCD (lowest common denominator) is 20.

Answers

Answer:

1/4 2/5 4x5=20

Step-by-step explanation:

i need help understanding!

Answers

Here are the first two, if you still don’t understand it just let me know!

Can somebody help me ASAP !!!!!

Answers

Step-by-step explanation:

√17= 4.12

Therefore, we need to find an irrational no. between 4.1 and 4.12

So, the correct option is a

4.1001000100001000001....

how to find area of polygon please explain

Answers

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothegm. Here is what it means: Perimeter = the sum of the lengths of all the sides. Apothegm = a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.

I want to buy a combination of Dr.pepper and sprite. dr pepper cost 2.98 each and sprite is on sell for 1.99 each. I need at least 8 total and i can spend more than 20 dollars

High School

Answers

There are quite a few possible combinations that are minimum 8 sodas, and under $20.

1. 4 Dr. Peppers and 4 Sprites. $2.98 times 4 = $11.92. $1.99 times 4 = $7.96. $7.96 + $11.92 = $19.88.

2. 3 Dr. Peppers and 5 Sprites. $2.98 times 3 = $8.94. $1.99 times 5 = $9.95. $9.95 + $8.94 = $18.89.

3. 2 Dr. Peppers and 6 Sprites. $2.98 times 2 = $5.96. $1.99 times 6 = $11.94. $11.94 + $5.96 = $17.90.

4. 2 Dr. Peppers and 7 Sprites. $2.98 times 2 = $5.96. $1.99 times 7 = $13.93. $5.96 + $13.93 = $19.89.

5. 1 Dr. Pepper and 7 Sprites. $2.98 times 1 = $2.98. $1.99 times 7 = $13.93. $2.98 + $13.93 = $16.91.

6. 1 Dr. Pepper and 8 Sprites. $2.98 times 1 = $2.98. $1.99 times 8 = $15.92. $15.92 + $2.98 = $18.90.

I hope this helps!

The table represents an exponential function
ative rate of change of the function?
1/3
2/3
2
9

Answers

1/3 is the right answer i believe

What is the slope of the line passing through the points (2,5) and (-1,-4)? Show

all your work.

Answers

Answer:the slope is 3/9

Step-by-step explanation:use the y intercept form

Answer:

3

Step-by-step explanation:

Slope = change in y/change in x

That’s y2 - y1 /x2 - x1

Given

x1 = 2

y1 = 5

x2 = -1

y2 = -4

Slope = -4 - 5 /-1 - 2

= -9/-3

= 3

A utility pole is supported by two wires, one on each side, going in the opposite direction. The two wires form a 75-degree angle at the utility pole. if the wires are 12 meters and 16 meters long and secured to the ground, find the distance between the wires on the ground.


(Cosines problem)

Answers

Answer:

The required distance is 17.34 meters.

Step-by-step explanation:

The lengths of the two wires are 12 meters and 16 meters. and the angle between the wires is 75°.

Now, we have to calculate the distance between the wires on the ground.

Therefore, we have to calculate the length of the side which is the opposite side of angle 75° of the triangle formed by the wires and the ground.

Applying the formula of properties of the triangle, if the length required is x, then

[tex]\cos 75^{\circ} = \frac{12^{2} + 16^{2} - x^{2}}{2 \times 12 \times 16}[/tex]

⇒ 99.38 = 144 + 256 - x²

x = 17.34 meters. (Answer)

find the mean,median,and mode of the data: 0,100,25,25,25.Which outlier,0, 100, affects the data more?

Answers

Mean: 175/5 = 35.

Median: 0, 25, 25, 25, 100 - 25 is in the middle.

Mode: 25, it appears the most.

The outlier 100 affects the data, because the number 100 still farthest from the main cluster. (Sorry if this is wrong)

Other Questions
The given family of functions is the general solution of the differential equation on the indicated interval. Find a member of the family that is a solution of the initial-value problem. y = c1 + c2 cos(x) + c3 sin(x), ([infinity], [infinity]); y''' + y' = 0, y() = 0, y'() = 9, y''() = 1 describe the events that reverse Mrs. gauges fortune Imagine that you have discovered a new species that has the ability to consume other organisms for energy and also contains chloroplasts. What would these properties tell you about the organism Ian tends to be very shy about participating in class discussions. You decide to try to promote greater participation in class discussion by first smiling encouragingly at him when he merely looks interested in saying something, then smiling at him when he raises his hand, and then praising him when he actually makes a contribution. The technique you are using is referred to as:___________.a. spontaneous recovery.b. shaping.c. extinction.d. positive reinforcement. You are a member of a citizen's committee investigating safety in the high school sports program. You are interested in knee damage to athletes participating in the long jump (sometimes called the broad jump). The coach has her best long jumper demonstrate the event for you. He runs down the track and, at the take-off point, jumps into the air at an angle of 30 degrees from the horizontal. He comes down in a sand pit at the same level as the track 26 feet away from his take-off point. With what velocity (both magnitude and direction) did he hit the ground? What is the equation of a line that has a slope of 1/2 and contains the point (8, 1)? Express the equation in slope-intercept form, y = mx + b. A- y= -1/2x+5B- y= -1/2x+4 C- y= -1/2x+8 1/2 D- y= -1/2x-5 An RLC circuit with a resistor of R\:=\:1 R = 1 k, capacitor ofC\:=\:3 C = 3 F, and inductor ofL\:=\:2 L = 2 H reaches a maximum current through the inductor of 7 mA. When all of the energy stored in the circuit is in the inductor, what is the magnetic energy stored? (Express your answer in micro-Joules) In the same circuit explained above, if all the energy is then transferred into the capacitor, what voltage drop will there be across the capacitor? (Express your answer in Volts to the hundredths place) Which of the following refers to an attractive force between two objects due to their mass A manager who has retired had a reserved parking space. Diego and Christian are both managers and think they have a rightto the parking space. They argue about this and ask Marcos, their supervisor, to settle their disagreement, but Marcos says heis too busy to deal with arguments about parking spaces. They then ask Rose, another supervisor, and she tells them thatneither of them is getting the parking space because she has promised it to Jillian, a manager with less seniority than bothDiego and Christian. Diego and Christian do not agree with Rose's decision and are upset by it.Who is in conflict in this situation?-0)A)Diego and Christian onlyB)Diego, Christian, and Rose onlyDiego, Christian, and Marcos onlyD)Diego, Christian, and Jillian only5) Factor the expression. 21v2 70v + 49A. 7(3v 7)(v 1)B. (21v 49)(v 1)C. 7(3v + 7)(v + 1) Approximately how fast is Jupiter orbiting the Sun? Approximately how fast is Jupiter orbiting the Sun? 10 km/skm/s a little less than 15 km/skm/s 20 km/skm/s cannot be determined from the information provided 5 less than a number is 15 What did abraham lincoln state in the emancipation proclamation? An equation for the depreciation of a car is given by y = A(1 r)t , where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is 10%. Approximately how old is the car? A piece of Nichrome wire has a radius of 6.5 104 m. It is used in a laboratory to make a heater that uses 4.00 102 W of power when connected to a voltage source of 120 V. Ignoring the effect of temperature on resistance, estimate the necessary length of wire. can someone please please just answer some questions for me please i need it for school and if its not done then its over for me Tanya likes to take walks around the pentagonal garden at her local park. The garden on the left has congruent sides. If Tanya starts at one vertex of the pentagon and walks all the way around the garden, how far has she walked in total? Describe how British trade with China triggered the opium war A barcode can be printed on a product to help identify the product. A barcode usually consists of several alternating vertical black and white lines of various widths. A barcode scanner is used to read the information stored in a barcode. The barcode scanner projects a beam of light on the barcode. The light that reflects from the barcode is decoded to give information about the product.Which of the following processes enables the scanner to decode the information from the barcode?A:The projected light from the scanner is absorbed by the black lines and reflected by the white lines of the barcode, which creates a pattern on the optical sensor of the scanner.B:The projected light from the scanner is refracted by the lines on the barcode, which changes the speed of the light hitting the optical sensor of the scanner.C:The projected light from the scanner interferes with the reflected light from the barcode, and this combined beam of light is recognized by the optical sensor of the scanner.D:The projected light from the scanner is diffracted by the barcode, which creates a pattern on the optical sensor of the scanner. The term or phrase that describes all types of colleges is