Josephine is taking a college course, and her professor bases the course grade on the average of 2 tests taken in the semester. She wants to know what she needs to earn on the last test to maintain her grade. Rearrange the following equation for b, where C is the average of 2 test scores, a and b. C=a+b/2
Please DO NOT say that this has already been answered, the answer options were different than this question.
Options:
a.) b = 2C/a
b.) b = 2C + a
c.) b = 2C - a
d.) b = 2C(a)

The equation C=a+b/2 can be rearranged for b as b=2C - a. Therefore, option C is the correct answer.

We need to rearrange an equation C=a+b/2 for b, where C is the average of 2 test scores, a and b.

By definition, an average is the arithmetic mean of the sum of all the values divided by the total number of values in a given set. An average is calculated for those sets of values which are more or less the same. The term average describes the numeric value that represents a large amount of data. An average can be derived by calculating the ratio of the sum of all the values to the number of units or values.

The equation C=a+b/2 can be rearranged for b as follows:

Now, C=a+b/2

⇒2C=a+b

⇒b=2C - a

The equation C=a+b/2 can be rearranged for b as b=2C - a. Therefore, option C is the correct answer.

To learn more about an equation visit:

https://brainly.com/question/14686792.

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Find the unit rate Patricia paid $385 for 5 nights at a hotel. What is the cost for 1 night?

I got -1 5/43, did i mess something up?

At a book store there are 25 books on the clearance section. 20 of the books are young adult novels and the rest of the books are picture books. Which statement is not true? *
A) For every 4 young adult novels, there is 1 picture book
B) For every 5 books, 4 are young adult novels
C) The ratio of picture books to young adult novels is 1:4
D) There is 1 picture book for every 5 books
E) All statements are true

Which of the following is a correct interpretation of the expression 2 - (-5)
A The number that is 5 to the left of 2 on the number line
B The number that is 5 to the right of 2 on the number line
C The number that is 2 to the left of -5 on the number line
D The number that is 2 to the right of -5 on the number line

Using the slope formula, find the slopes of the line segments
AB and CD using the following points:

(a) A(-3, 1) and B(6, 4) (b) C(-2,8) and D(1,-1)
Slope AB = Slope CD =

What do you notice about their slopes?

PLZ HELP!! Geometry! 10 points!

Please help!

3(x-4)=5(x+2)

Pls yall have to help me hurry to get 10 pionts but you have to have a explamation and a answer pls pls pls if you do something wrong ill report you hurry tho


Martin decided to buy 2 bags of grapes weighing 5 and two-thirds pounds each, instead of the 3 bags weighing 4 and one-fifth pounds each, because the bigger bags were on sale. Did he end up with more grapes or less grapes by buying the bigger bags?

1.He ended up with about One-half pound less grapes.
2.He ended up with about One-half pound more grapes.
3.He ended up with about 1 pound less grapes.
4.He ended up with about 1 pound more grapes.

Find the sales price for a $900 TV with a 25% discount.
Discount = Regular Price X Rate of Discount Sales Price= Regular Price - Discount.
b. Discount (mark down Expression) = ((Original price – (Original price x discount rate))

Help me plz i forgot to put this in the other question!

how do I know if im diving with ratio's or multiplying? please put a equation problem about dividing and multiplying ratios

What is the answer? Please help me!!! PLEASE!!!!

QUICKLY
Parallel lines r and s are cut by two transversals, parallel lines t and u. Which angles are alternate exterior angles with angle 11? Angle5 and Angle13 Angle7 and Angle15 Angle6 and Angle16 Angle8 and Angle14

Choose the correct set of y-values for the function y = -2x when x = -2, 0, 2.
(-2, 4), (0, 0), (2, -4)
(-2, -4), (0, 0), (2, -4)
(-2, 4), (0, -2), (2, 4)
(-2, -4), (0, 0), (2, 4)

Please Help!!!! No "positive vibes" answers please!! :( Please write a detailed explanation of your answer! Best one gets brainliest!!!!

What is the initial value, and what does it represent?

A. The initial value is 100; it represents money left over from last year's fundraiser

B. The initial value is 100; it represents money earned per card


C. The initial value is 2; it represents money left over from last year's fundraiser


D. The initial value is 2; it represents money earned per card

Can you pls answer these questions?
I'm giving brainliest

I’ll give brainliest PRONTO

What is the area of the object above?
A.
155 cm2
B.
60 cm2
C.
225 cm2
D.
120 in2

What are these two equations in slope intercept form?

Jermaine buys T-shirts for $6 each and marks up the price by 45%.
How much profit does Jermaine make for each T-shirt sold?

Please help me i am very bad a math
(thank you )

Please help me my Math Grade Is a D-

PLEASE HELP ME WITH THIS!! I WILL GIVE EXTRA POINTS,AND BRAINLIST IF YOU ANSWER THIS CORRECTY!!

Find two numbers that add up 158. The greater number is 40 more than the lesster number.

A. 70 and 110
B. 99 and 59
C. 80 and 78
D. 98 and 60
E. 100 and 68

Please help me I will give you the brain thing and extra points. (image below) 4/4

Brad has walked 4/9 of his goal distance this month. If his goal is 27 miles, how many miles has Brad walked

Help w/ math, please & thanks!

Sorry this is irrelevant but would you eat this

What is the slope of the line through (-4,2)(−4,2)left parenthesis, minus, 4, comma, 2, right parenthesis and (3,-3)(3,−3)left parenthesis, 3, comma, minus, 3, right parenthesis? Choose 1 answer: Choose 1 answer: (Choice A) A \dfrac57 7 5 ​ start fraction, 5, divided by, 7, end fraction (Choice B) B \dfrac75 5 7 ​ start fraction, 7, divided by, 5, end fraction (Choice C) C -\dfrac57− 7 5 ​ minus, start fraction, 5, divided by, 7, end fraction (Choice D) D -\dfrac75− 5 7 ​

Please solve!
6y-6=4y+16