Answers
Answer:
86%
Step-by-step explanation:
The mean is calculated as
mean = [tex]\frac{sum}{count}[/tex]
The sum for the class is calculated as
[tex]\frac{sum}{30}[/tex] = 70 ( multiply both sides by 30 )
sum = 2100
The sum of the 20 boys is
[tex]\frac{sum}{20}[/tex] = 62 ( multiply both sides by 20 )
sum = 1240
The sum for the 10 girls is therefore 2100 - 1240 = 860
Thus the mean mark for the girls is
mean = [tex]\frac{860}{10}[/tex] = 86%
Related Questions
Please help I’ll give you brainliest UwU
A. 8 regular light Bulbs
B. 19 regular light bulbs
C. 84. Regular light bulbs
D. 96. Regular light bulbs
Answers
Answer:
84 regular light bulbs
Step-by-step explanation:
When there are 7 regular light bulbs to every 1 energy saving one, there will be 7 more added for every 1 energy saving light bulb that there is. So if there is 12 energy saving light bulbs, just multiply 7 by 12 and you will get your answer.
56 1/4% equals what?
Answers
Answer:
This is equal to 14025.
Step-by-step explanation:
Alternative is 1.4025×[tex]10^{4}[/tex]
Brainliest? Thanks!
which is not solution to the folloeing linear equality
A. (-2, 1)
B. (0, 0)
C. (2, -1)
D. (-9, -9)
Answers
Answer:
B
Step-by-step explanation:
A cone had a height of 16 inches and a radius of 14 inches . If pi is 3.14 what is the volume ?
Answers
Answer:
3284.01, brainliest if correct pls
Step-by-step explanation:
Answer:
3282 cubic inches.
Step-by-step explanation: Just times 14 times 14 since its in radius form then times by 16 then by 3.14 last divide by 3.
HEY CAN ANYONE PLS PLS ANSWER DIS MATH PROBLEM!!!!!
Answers
Answer:
greater than 27 less than 48
Step-by-step explanation:
A ball is dropped from a certain height. The table shows the rebound height of the ball after a series of bounces.
From what height, approximately, do you think the ball was dropped? Explain or show your reasoning.
Answers
Answer:
50
Step-by-step explanation:
becasue
Urgent! Please help!
Solve the given equation:
3(x-2)^4/3 =243
Answers
Answer:
x is equal to 29.
Step-by-step explanation:
[tex]3(x - 2)^{\frac{4}{3}} = 243\\(x - 2)^{\frac{4}{3}} = 243 / 3\\(x - 2)^{\frac{4}{3}} = 243 / 3\\(x - 2) =( 243 / 3)^{\frac{3}{4}}\\x - 2 = 81^{\frac{3}{4}}\\x = 3^3 + 2\\x = 27 + 2\\x = 29[/tex]
could somebody help please
Answers
What is the solution set for this inequality?
-8x + 40>-16
Answers
Answer:
Step-by-step explanation:
-8×+40>-16
Answer:
x > 7
Step-by-step explanation:
-8x+40>-16
You do 40 minus 40, and that cancells it out, then you do -16 minus 40, wich gives you -56, then, you do -1 divided by -8, wich, again, cancels it out, and finally, do -56 divided by -8 wich gives you 7, so, x=7.
What is the domain of f(x)=
10x1-(4)
?
Answers
Answer:
Domain:(−∞,∞),{x|x∈R}
Step-by-step explanation:
Which expression represents angle 4, the degree measure of the exterior angle in the figure above?
Select one:
A. m∠2 + m∠3
B. m∠2 + m∠1
C. m∠1 + m∠3
D. 180 - m∠1
Answers
Answer:
is there a picture of it
guys im tired & want to go to sleepp pls answer ...
Answers
Answer:
A (-3,9)
Step-by-step explanation:
ok easy they they us
R(2,1) and R'(-4,8)
subtract 6 from y and add 7 to y
ok lets solve for S'
S(3,2) now subtract 6 and add 7
(3,2)+(-6,7)
(-3,9)
Can somebody plz answer this math problem correctly thanks!
WILL MARK BRAINLIEST :D
Answers
Answer:
Ellen and Blake answered 20 questions correctly since Ellen had 0.8 correct and that is 80% same with Blake
Stephen scored a .84 or an 84%
I hope this helps :)
Step-by-step explanation:
plz mark B R A I N L I E S T
Answer:
Stephen: 21
Ellen: 20
Blake: 20
Step-by-step explanation:
If youre looking for more in depth answers:
Stephen received a 21 / 25 (84%)
Ellen received a 20 / 25 (80%)
Black received a 20 / 25 (80%)
Find the equation of the line.
Use exact numbers.
y=___x+____
Answers
Y= 2x + 4
Because the line lies on the number “4” which is on the Y axis
And the slope is 4 spaces up and 2 spaces to the right
Match each interval with its corresponding average rate of change for q(x) = (x + 3)2. 1. -6 ≤ x ≤ 0 -1 2. -3 ≤ x ≤ -2 -3 3. -6 ≤ x ≤ -3 -4 4. -6 ≤ x ≤ -4 0 5. -4 ≤ x ≤ -3 3 6. -3 ≤ x ≤ 0 1
Answers
Sally and her friends went to the county fair. They paid a total of $20 for their tickets. While at the fair, they bought 3 bags of cotton candy at x dollars each, 4 hamburgers at y dollars each, and 5 drinks at z dollars each. Which expression represents this situation?
Answers
Answer:
20 + 3x + 4y + 5z
Step-by-step explanation:
20 + 3*x + 4*y + 5*z
Answer:
20+3x+4y+5z
Step-by-step explanation:
I need help ASAP :) thank you!
Answers
Answer:
x=2, y=0
Step-by-step explanation:
Evaluate
2x - Y when x= 5, y=3
Answers
Answer:
the answer is 7
Step-by-step explanation:
2x-y
2*5 - 3
10 - 3
7
7 7/10 + 6 2/3 help please
Answers
Answer:
7.436 rounded to 7.44 hope this helps!
Step-by-step explanation:
7.7 + 6 2/3= 7.436
A price of a hoverboard was marked down from $220 to $132. By what percent was the price of the hoverboard reduced?
A) 40%
B) 88%
C) 36%
D) 33.3%
Answers
B)88%
Explanation:
$220 - 88 = 132 ig because ive tried all of the percentages and multiplied them in decimal form and none of then gave me the answer till i just started subtracting instead.
220÷132=36 so the answer is c
My question is in the picture I tried to multiply -7 on both sides and got -147 I don't know if it's correct or if it's the right way to do it.
Answers
Answer:
-3
Step-by-step explanation:
-7b = 21
/ -7 / -7
b = -3
Answer:
-3
Step-by-step explanation:
Hope this helped have an amazing day!
Select all of the symbols that would make the comparison true.
-7_4
Answers
-4 is greater than -7
Question 2
8 pts
You buy a bike for $200 and a skateboard for $30. What is the total cost if the tax rate is
8.25%? Round your answer to the nearest hundredth.
I
Answers
Answer:
$248.98
Step-by-step explanation:
200 + 30 = 230.
8.25% of 230 is 18.975, rounded to $18.98.
230 + 18.98 = 248.98.
At the end of the harvest season, Omar wonders if it is time to cover the garden with a tarp. He understands that as the temperature decreases, moisture in the air condenses into dew which freezes at 0 degrees Celsius and may damage the plants in the garden. * At 4:00 pm, the temperature is 5 degrees Celsius * The temperature is predicted to decrease 0.5 degrees Celsius every two hours until 4:00 am. #4 Part A: Does Omar need to cover the garden
Answers
Answer:
Non il n'a pas besoin de couvrir le jardin
Step-by-step explanation:
Comme à 16h il fait 5°C, on enlève 0.5°C toutes les deux heures donc à 18h il fera 4.5°C, à 20h il fera 4°C, à 22h il fera 3.5°C, à 0h il fera 3°C, à 2h il fera 2.5°C et à 4h la dernière heure où la température baisse il fera 2°C
help meeeee plzzzzzzzzzz i need this done
Answers
Answer:
1.) yes
2.) no
Step-by-step explanation:
1.) Yes
3x - 2y = 1
3(5) - 2(7) = 1
15 - 14 = 1
1 = 1
2.) No
2x + 8y = 26
2(-3) + 8(-4) = 26
-6 - 32 = 26
-38 ≠ 26
Answer:
1. yes 2. no
Step-by-step explanation:
1. 3(5)-2(7)=1 √
2. 2(-3)+8(-4)=-38 not 26 ×
Answer correctly please !!!!!!!!!!! Marking Brianliest !!!!!!!!!!!!!!!!!!
Answers
Answer:
The third side is 2√14
Step-by-step explanation:
The third side is found using Pythagorean theorem
=√(√92)²-(6)²
=√92-36
=√56
=2√14
Jada has 12 library books checked out and Han has 1/3 less than that. How many books does Han have checked out?
Answers
The total book checked out by Han will be equal to 8 which is 4 less than Jada.
What is an arithmetic operation?The four basic mathematical operations are the addition, subtraction, multiplication, and division of two or even more integers. Among them is the examination of integers, particularly the order of actions, which is crucial for all other mathematical topics, including algebra, data organization, and geometry.
As per the given information in the question,
Total books checked out Jada = 12
Han has 1/3 less than Jada so,
12 × 1/3
= 4 books less than Jada.
So,
12 - 4 = 8 books checked out Han.
To know more about arithmetic operations:
https://brainly.com/question/13585407
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Are these two triangles congruent?
Yes
No
Not enough information?
Answers
Part A: A graph passes through the points (0, 2), (2, 6), and (3, 12). Does this graph represent a linear function or a non-linear function? Explain your answer in words.
Part B: Write one example of a linear function and one example of a non-linear function. (Use x and y as the variables) (10 points)
Answers
Answer:
Im doing the same quesiton for flvs and dont know
Step-by-step explanation:
Answer:
what school do u do
Step-by-step explanation:
Reese had $42 in his pocket orl Sunday night. He spent $6.50 every day for lunch.
Which of the following equations best describes the relationship between d, the
number of days since Sunday, and m, the amount of money remaining?
Answers
The required equation is m = 42 - 6.50d which is the correct answer would be an option (C).
What is the Linear equation?A linear equation is defined as an equation in which the highest power of the variable is always one.
We have been given that Reese had $42 in his pocket on Sunday night. He spent $6.50 every day for lunch.
Let d represents the number of days since Sunday, and m represents the amount of money remaining
Reese has 42 total and it subtracts by 6.50$ every day
According to the given question,
The linear equation would be as
m = 42 - 6.50d
The above model equation is the relationship between d, the number of days since Sunday, and m, the amount of money remaining
Therefore, the required equation is m = 42 - 6.50d.
Learn more about the Linear equations here:
https://brainly.com/question/13738061
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