Mathematics High School

A high school teacher gives three regular exams during a semester and one final exam at the end of the semester. A student’s final grade is found by taking of the student’s three regular exam scores and then adding 40% of the student’s final exam score. Sophia earned scores of 78, 92, and 80 on the three regular exams and a score of 90 on the final exam. What is Sophia’s final grade?

Answers

Answer 1
To get an average score of 80% (out of four exams), a total of 4*80%=320% is needed, so the minimum required for the 4th test is 320-(75+97+60)=88.
To get an average score of 89% (out of four exams), a total of 4*89%=356% is needed, so the maximum required for the 4th test is 356-(75+97+60)=124, which is impossible.
So the next exam grade must range between 88 and 100 to get a grade b in the class.

Hoped I help! Mark brainly it would help<3

Related Questions

Write the equation, in point-slope form, that contains the point (3, -6) with a slope of 2.

Answers

Answer:

y+6=2(x-3)

Step-by-step explanation:

y-y1=m(x-x1)

y-(-6)=2(x-3)

y+6=2(x-3)

A shark can swim at an average speed of 25 miles per hour. At this rate, how far can a shark swim in 2.5 hours?

Answers

Answer:

62.5 miles in 2.5 hours

Hope this helped.

x + 14 = 26, x =

I need help please​

Answers

x=12

hope this helps :))

Answer:

x = 12

Step-by-step explanation:

subtract 12 from the 26 and you get 14 so x = 12

heyeyeyey yall! How are yall?

Answers

Answer:

im good hbu

Step-by-step explanation:

Answer:

im good :)

Step-by-step explanation:

hey can someone help:)?​

Answers

I think it’s the first one


Mike has $40, which is $6 more than twice the amount of money that Karly has. How much money does Karly have?

Answers

Answer:

karly has 68 dollars

Step-by-step explanation:

40-6=34

34×2=68

2) A bag contains some red, blue and
yellow balls. 30% of the balls are
blue and 40% are red.
If there are 50 balls in the bag,
how many are yellow?
Show work and make an equivalent equation

Answers

25% were in the bag .
There is 25% in the bag


Find the solution to the following system of linear
equations by using the substitution method.
y = 4x -4
X+ y = 11

Answers

Step-by-step explanation:

[tex]y = 4x - 4 \\ x + y = 11 \\ x + 4x - 4 = 11 \\ 5x = 15 \\ x = 3 \\ y = 4 \times 3 - 4 \\ y = 8[/tex]

please i need help asap!!!!

Answers

Step-by-step explanation:

[tex] {b}^{2} = {16}^{2} + {12}^{2} \\ {b}^{2} = 256 + 144 \\ b = 20[/tex]

What is a producer? (Think about the word autotrophs

Answers

Answer:

A producer is an animal that produces its own food. An example of a producer is a plant like a tree. They take the suns energy and convert it to chemical energy which benefits them.

Step-by-step explanation:

Use the number line below to answer the question which statement about the location of point G on the number line is true??
Can someone help me please ? I’m struggling. Lol

Answers

Answer:

C

PLZ MARK AS BRAINLIEST

C I need points so yea I assume it’s C since other guy said it’s C have a good rest of y’all days and hope y’all pass them tests

HELP PLS ASAP



-5 = 5/12a pls evaluate

Answers

Answer:

a = -12

Remember that when a variable is times with a number, you divide the number on both sides.

When a variable is divided by a number, you multiply the number on both sides.

Hope this helps you. Thank you !!

Simplify the following expression.
1/2+ 1/10 = ?
А: 1/6
B:1/5
C.3/5
D:3/10
PLEASE ANSWER THIS QUESTION FAST

Answers

Answer: C: 3/5

Step-by-step explanation:

1/2 is equal to 5/10

so 5/10+1/10= 6/10

6/10 can simplify to 3/5

A skateboarder rides by my office every 8 minutes, and a cyclist rides by every 10 minutes. How long will it take for the skateboarder and cyclist to ride by at the same time?

Answers

Answer:

40 minutes

Step-by-step explanation:

10 times 4 = 40

8 times 5 = 40

so they will cross paths after 40 minutes of riding

The directions on a sewing pattern say to cut an extra 15% of fabric to account for error. Chloe needs 0.75 yard of fabric to make a skirt, so she cuts 0.1125 yard. Did Chloe cut the correct amount of fabric? Why or why not?

Answers

Answer:

Step-by-step explanation:

for an error. Chloe needs a 0.75 yard of fabric to make a skirt, so she cuts - 77… ... The directions on a sewing pattern say to cut a extra 15% of fabric to account for an error. Chloe needs a ... yard. Did Chloe cut the correct amount of fabric? ... No, Chloe cut only 15% of the .75 yards of fabric she needed

jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. When the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax. After tax, the total is 45.99. What percentage of the subtotal is the total?

Answers

Answer:

To find out the percentage, you do (3.99/42) * 100.

Step-by-step explanation:

Find the value of x such that the data set has the given mean
100, 123, 105, 115, 110, x; mean 120

x=

Answers

The formula for mean is

all numbers added / how many numbers there are

Counting x, we have 6 terms.

(100 + 123 + 105 + 115 + 110 + x) / 6 = 120

Get rid of the denominator by multiplying 120 times 6.

100 + 123 + 105 + 115 + 110 + x = 720

Now, subtract everything on the left from 720 and isolate x.

100 + 123 + 105 + 115 + 110 = 553

720 - 553 = 167

x = 167

X is equal to 167 I think

Matt was given $14 for a good report card. He now has $23. How much money did he start with?

Answers

Answer:

9 dollars

Step-by-step explanation:

do 14 - 23

$9. $23 minus the $14 he was given equals $9.

Plz help me with these two math problems

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

Given the function representing the number of customers on day x

f(x) = 3ˣ

Part A)

We need to determine the day when there are 243 customers.

so substitute f(x) = 243 in the function

[tex]f\left(x\right)\:=\:3^x[/tex]

Part B)

Solving the equation

[tex]f\left(x\right)\:=\:3^x[/tex]

[tex]243\:=\:3^x[/tex]

as 2⁵ = 243, so

[tex]\:2^5=3^x\:[/tex]

x = 5

The value of x = 5

Part C)

As the value of x = 5

Therefore, on the 5th day, there would be 243 customers.

Solve the equation for the red variable

Answers

Answer:

Step-by-step explanation:

Solve for m (which represents mass):

          e

m = --------

        c^2

find the missing number 29\50=__\100

Answers

Answer:

58/100

Step-by-step explanation:

50 times 2 is 100, so we multiply the other number by 2 because what you do to the bottom you do to the top.

29 times 100 is 58

your answer is 58/100

Hellllppp meee please due in 10 mins

Answers

3/2 is the slope as your answer

Answer:

-3/2

Step-by-step explanation:

please help me will give brainliest

Answers

Answer:

m = [tex]\frac{13}{3}[/tex]

Step-by-step explanation:

Given

[tex]\frac{1}{12}[/tex] = [tex]\frac{m-4}{4}[/tex] ( cross- multiply )

12(m - 4) = 4 ( divide both sides by 12 )

m - 4 = [tex]\frac{4}{12}[/tex] = [tex]\frac{1}{3}[/tex] ( add 4 to both sides )

m = 4 [tex]\frac{1}{3}[/tex] = [tex]\frac{13}{3}[/tex]

If ABCD is a square, what is m

Answers

Answer:

I think m is the length of ABCD Square

PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Answers

Answer:

X=5

Step-by-step explanation:

Trust me bro also it because if you input 5 into x you wille see that 3(5)+2=17

Answer:

X=5

Step-by-step explanation:

we must isolate x

subtract 2 from 3x+2=17

3x=15

divide 15 and 3x by 3

x=5

Write a function in terms of t that represents the situation.
Sales of $10,000 increase by 65% each year.
y =
13

Answers

Answer:

A function in terms of t that represents the situation is:

[tex]\:y\:=\:10,000\left(1.65\right)^t[/tex]

Step-by-step explanation:

We know that the exponential growth function is of the form

[tex]y\:=\:a\:\left(1\:+\:r\right)^t[/tex]

Here:

a = initial value r = growth rate  t = number of time intervals that have passed

As the sales of $10,000 represent an initial condition. Thus,  

a = 10,000

Given that sales are increased by 65% every year.

r = 65% = 0.65

now substituting a = 10,000 and r = 0.65 in the function

[tex]y\:=\:10,000\left(1\:+\:0.65\right)^t[/tex]

[tex]\:y\:=\:10,000\left(1.65\right)^t[/tex]

Therefore, a function in terms of t that represents the situation is:

[tex]\:y\:=\:10,000\left(1.65\right)^t[/tex]

Express 11% as a fraction in simplest form.

-1/11
-100/11
-1/9
-11/100

11/100 is wrong i got it wrong:/

Answers

Answer:

11/100 is not wrong

Step-by-step explanation:

Convert the following into a fraction:

11%

Hint: | "Percent" (%) means "out of 100".

11% = 11/100:

Answer: 11/100

In 2p

, 2 is known as​

Answers

Answer:

the variable

Step-by-step explanation:

A variable is a quantity that may change within the context of a mathematical problem or experiment. for example

                                coefficient->2p<-variable

Paul was thinking of a number. Paul doubles it and adds 8.7 to get an answer of 23.4. Form an

Answers

Assuming it says form an equation it’s
2x +8.7 = 23.4
In that case he was thinking of the number 7.35

PLEASE HELP ITS TIMED!
Order from least to greatest -0.3, -1.1, 2, -0.9, and 0.4

Answers

Answer:-1.1, -0.9, -0.3, 0.4, 2

Step-by-step explanation:

Hope this helps.

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