Answer:
Difference in scores between his 7th and 8th quizzes = 22
Step-by-step explanation:
Given: Mean score for first 6 quizzes is 33 points. After his 7th quiz his mean score was 32 points. After the 8th quiz the mean was 34.
To find: difference in scores between his 7th and 8th quizzes
Solution:
Mean scores = Total points scored in quizzes ÷ Number of quizzes
So,
Total points scored in quizzes = Mean scores × Number of quizzes
As mean score for first 6 quizzes is 33 points,
Total points scored in 6 quizzes = 6 × 33 = 198
As mean score for first 7 quizzes is 32 points,
Total points scored in 7 quizzes = 7 × 32 = 224
So,
7th score = Total points scored in 7 quizzes - Total points scored in 6 quizzes
= 224 - 198
= 26
As mean score for first 8 quizzes is 34 points,
Total points scored in 8 quizzes = 8 × 34 = 272
So,
8th score = Total points scored in 8 quizzes - Total points scored in 7 quizzes
= 272 - 224
= 48
Therefore,
Difference in scores between his 7th and 8th quizzes = 48 - 26
= 22
Did I choose the correct answer?
Answer:
11.90
Step-by-step explanation:
oh yes sorry I didn't see what you chose lol
Answer:
Yes
Step-by-step explanation:
Rounding two decimal points mean there will be two numbers behind the decimal and since 6 is more than 5 and influences the result of the 9 the answer would be 11.90. It could be 11.9 but having said there is two decimal places there should be a 0 hope this helps!!
can someone please help me on numbers 5-10 and please show and explain your work HELP THIS IS DUE SOON thxs uwu
Answer:
hi bri
Step-by-step explanation:
The difference of the two numbers is 3 their sum is 13 find the numbers please help
Answer:
2x-3=13
2x=13+3
2x=16
2x/2=16/2
x=8
Answer:
first number is 8
second number is 5
Step-by-step explanation:
An company charges an initial fee of $350, plus $50 for each additional service added.
Which function can be used to find y, the total amount a customer would pay after n services were added.
Answer:
Y=250+50n
Step-by-step explanation:
Well since y in this case is total cost that is basically (f) the function range.
The domain in this case is the 250 one time fee and the 50 buks per services.
help please! i put extra points :(
Answer:
[tex]c \: (x + 5)(x - 1)[/tex]
Find the value for a.
Answer:
a = 25
Step-by-step explanation:
The exterior angles of a polygon sum to 360°
Sum the exterior angles and equate to 360
a + a + 40 + 51 + 55 + 54 + 2a + 60 = 360, that is
4a + 260 = 360 ( subtract 260 from both sides )
4a = 100 ( divide both sides by 4 )
a = 25
What is the probability of picking a red marble
and keeping it, picking another red marble and
keeping it, then picking a blue marble? (leave
answer in fraction form in lowest terms)
how many marbles are there
What is the value of X? x=?º
Answer:
X=30⁰
Step-by-step explanation:
X=120-60/2
X=60/2
x=30
hope it helps....
I'll give brainlyest hel
Answer:
66 m^2
Step-by-step explanation:
6*11=66
This list gives the height of different plants in inches. 10.25, 11.25, 11.00, 10.50, 10.50, 11.00, 10.75, 10.25, 11.00, 10.25, 10.50, 10.75, 10.25, 10.25, 10.50, 11.25, 11.00, 10.75 Create a line plot to display the data. To create a line plot, hover over each number on the number line. Then click and drag up to plot the data.
Answer:
10.25 xxxx 10.50 xxxx 10.75 xxx 11.00 xxxx 11.25 xx
Step-by-step explanation:
hope this helps
Answer:
10.25 | 5
10.50 | 4
10.75 | 3
11.00 | 4
11.25 | 2
Step-by-step explanation:
I took test on K12.
Here if proof I got it correct.
Will Mark Brainliest <3
Please help!!!
Solve the equation.
- 9/4v + 4/5 =7/8
Answer:
-1/30
Step-by-step explanation:
can someone please help me on this problem.
Please help! *Giving brainiest* due really soon
Solve for c.
9 = 1+c
Answer:
c = 8
Step-by-step explanation:
What is the slope of the line containing the points (-4,-6) and (3,-4)
Answer:
got you right now
Step-by-step explanation:
the slope is -2\3
Each table represents a proportional relationship.
I NEED HELPPP
A student is 90 cm tall and growing at a rate of 3 cm per month. At this rate, in how many months will the student grow to a height of 132 cm?
Answer:
14 months
Step-by-step explanation:
14x3=42
42+90= 132
Find the area of the shape.
Answer:
27π
Step-by-step explanation:
A = πr²
= π(6)²
=36π
You want 3/4 of the circle
(3/4) 36π = 27π
Hellllppp “Jason states that ^ABC = ^RST. Kelley states that ^ABC = ^TSR. Which best describes the accuracy of the congruency statements?
Answer:
the answer is C
Step-by-step explanation:
i just took the test
Answer:
C. Both statements could be correct. RST could be the result of two translations of ABC. TSR could be the result of a reflection and a translation of ABC.
Step-by-step explanation:
Right on ED2021
Put these numbers in order from least to greatest.
The first five terms in a pattern are shown below. -0.5, -0.25, 0 , 0.25, 0.5, . . . Which equation represents the pattern?
Answer:
x + 0.25
Step-by-step explanation:
In this equation, x is representing an integer ( - 0.5, - 0.75, 0, 0.25) whilst 0.25 is a constant
Find the slope of each line.
Answer:
C) 1
Step-by-step explanation:
Slope = change in y over change in x
In the graph shown as y goes up 1 x goes up 1
so slope = 1/1 or 1
The slope equation is y=mx+b.
b is where the line crosses on the y axis, also known as the y-intercept.
m is the slope, which you are trying to find.
y and x are the points on the graph.
The slope is 3/3, which can be turned into 1, so the answer is c.
Angles in circle solve for each variable
Answer:
x degree = 112 degree
Step-by-step explanation:
let the intersecting point of two cords be O.
then arc QR = angle QOR
which means ; 68 degree = angle QOR
Now,
angle QOR + angle POQ = 180 degree ( linear pair )
or, 68 degree + angle POQ = 180 degree
hence, angle POQ = 112 degree,.
need help today!!!! plzs
Answer:
x=29
Step-by-step explanation:
cuz it's a 90 degree angle so 90-32 is 58 and divide it by 2 is 29 which would be x=29
Write and solve the equation for t to find when
there is 200 gallons of water in the tub.
Answer:
t = 10 minutes
Step-by-step explanation:
200 = 600 - 40t
-400 = -40t
t = 10
Simplify this to the lowest form: 2c^2 - 6 + c^2 - 3 + 3c^3
Answer:
7c^2 - 9
Step-by-step explanation:
2c^2 - 6 + c^2 - 3 + 3c^3
7c^2 - 9
What is the area of the parallelogram shown below?
Answer:
135 units square
Step-by-step explanation:
The area of a parallelogram is calculated by multplying height and base
The height of the given shape is 15 units and the base is 9 units
15 × 9 = 135 units square.
please dont put any links
21) Which expression is equivalent to 6(7x − 4)? A) 13x − 10 B) 13x − 24 C) 42x − 10 D) 42x − 24
Answer:
Answer is D) 42x − 24
Step-by-step explanation:
Opening the expression given in question
6(7x − 4)
6 will be multiplied by both items present inside parenthesis.
it can be written as
={(6 * 7x) - (6*4)}
=42x-24
Hope that clears the question.