The average mark scores by 29 students in a science test was 56%. Jessica was sick, so she sat the

test later and scored 71%. Including Jessica's score, what was the new value of the mean mark?

Answers

Answer 1

Answer:

56.5%

[tex] \frac{29 \times 56 + 71}{30 \times 100} = 0.565 = 56.5\%[/tex]


Related Questions

What is the missing measure

Answers

Answer:

119

Step-by-step explanation:

Answer:

look at the photo...............

Which graph represents the following relationship between X and y. Y=3x

Answers

Answer:

B

Step-by-step explanation:

Because each Y value is found by multiplying X value by 3

A plane travels a distance of 6,000 km in a time of 6.2 hours.
What is its average speed rounded to the nearest whole number?

Answers

Answer:

distance =6,000km

time =6.8 hrs

speed =distance /time =6,000/6.8=60000/68=882 km/h

plz make brainiest

1 = m 3 = 20°, then m =

Answers

Answer:

1

Step-by-step explanation:

Answer: 140m

Step-by-step explanation:

What is the area of the rectangle?

Answers

Answer:

60

Step-by-step explanation:

multiply length times width l x w

length is 10

width is 6

10 x 6 is 60

The area of the rectangle is 54.
The length of the rectangle is 9, while the width of the rectangle is 6. To find the area, you must multiply length • width.
9•6=54

The SAT is the most widely used college admission exam. (Most community colleges do not require students to take this exam.) The mean SAT math score varies by state and by year, so the value of µ depends on the state and the year. But let’s assume that the shape and spread of the distribution of individual SAT math scores in each state is the same each year. More specifically, assume that individual SAT math scores consistently have a normal distribution with a standard deviation of 100. An educational researcher wants to estimate the mean SAT math score (μ) for his state this year. The researcher chooses a random sample of 656 exams in his state. The sample mean for the test is 480.

Find the 95% confidence interval to estimate the mean SAT math score in this state for this year.

(Note: The critical
z
-value to use,
z
c
, is: 1.960.)

( , )

Answers

Using the z-distribution, it is found that the 95% confidence interval to estimate the mean SAT math score in this state for this year is (472, 488).

We have the standard deviation for the population, which is why the z-distribution is used to solve this question.

The sample mean is [tex]\overline{x} = 480[/tex].The population standard deviation is [tex]\sigma = 100[/tex].The sample size is [tex]n = 656[/tex].

The interval is given by:

[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]

We have to find the critical value, which is z with a p-value of [tex]\frac{1 + \alpha}{2}[/tex], in which [tex]\alpha[/tex] is the confidence level.

In this problem, [tex]\alpha = 0.95[/tex], thus, z with a p-value of [tex]\frac{1 + 0.95}{2} = 0.975[/tex], which means that it is z = 1.96.

Then:

[tex]\overline{x} - z\frac{\sigma}{\sqrt{n}} = 480 - 1.96\frac{100}{\sqrt{656}} = 472[/tex]

[tex]\overline{x} + z\frac{\sigma}{\sqrt{n}} = 480 + 1.96\frac{100}{\sqrt{656}} = 488[/tex]

The 95% confidence interval to estimate the mean SAT math score in this state for this year is (472, 488).

A similar problem is given at https://brainly.com/question/22596713

The table shows the shipping fee options for two online marketplaces.



Online Market Shipping Fees
Deals Flat fee of $12
Sell Ur Stuff 11% of selling price


If you sell a smart phone online for $115, how much will you pay if you use the online market with the lesser fee?

Answers

Since 11% of $115 is $12.65, it is convenient to pay the flat fee of $12.

If you sell a smart phone online for $115, to determine how much you will pay if you use the online market with the lesser fee, the following calculation must be performed:

115 x 0.11 = X 12.65 = X

Thus, since 11% of $115 is $12.65, it is convenient to pay the flat fee of $12.

Learn more in https://brainly.com/question/25206811

solve for x 2/10=3/x-9

Answers

Answer:

24

Step-by-step explanation:

Answer:24

explanation

Please help with this math problem! :)

Answers

Answer:

look at the photo..................

Answer:

x = 4.8 , y = 4

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

[tex]\frac{KJ}{NP}[/tex] = [tex]\frac{KL}{NM}[/tex] , substitute values

[tex]\frac{x}{3}[/tex] = [tex]\frac{8}{5}[/tex] ( cross- multiply )

5x = 24 ( divide both sides by 5 )

x = 4.8

and

[tex]\frac{JL}{PM}[/tex] = [tex]\frac{KL}{NM}[/tex] , that is

[tex]\frac{6.4}{y}[/tex] = [tex]\frac{8}{5}[/tex] ( cross- multiply )

8y = 32 ( divide both sides by 8 )

y = 4

If Sean reads 1 1/2 pages in 3 1/3 minutes, how many pages does he read in 1 minute?

Answers

Sean reads about 1 pages in one minute I believe because 1/2 in 1/3 is like a half of a page

helpppppppp plzzzzzzzzzzzzzzzzz (ANSWER ONLY IF YOU KNOW)

Answers

Answer:

1/7 ( a+1 )

Step-by-step explanation:

1/7a + 1/7

1/7 ( a+1 )

Which graph represents the polynomial function f(x)=x3+4x2−1

Answers

Answer:

B OK HOI THE FIRST TIME I AM SO SORRY TO

1)the fish vendor sells 5/7 kilos of bangus for 75.50. if you will buy 2 1/7 kilos of bangus,how much will cost?​

Answers

Answer: 好吧,您看到当您将其乘以 73 然后除以 时,您将获得免费的旁遮普语和免费的,乔·佩珀将在凌晨 3 点拜访您

Step-by-step explanation: 详见附件

porfavor ayuda ayuda

Answers

Answer:

b is 3/5 then 9/5 and lastly 15/25

c is 2/3 then 6/12 then 12/18

¿What are Fractions?

Fractions is that fraction whose fractional number is the expression of a quantity divided by another quantity; that is, it represents an unrealized quotient of numbers.

[tex] \bold{a) \dfrac{2}{4} = \dfrac{4}{8} = \dfrac{6}{12} = \dfrac{8}{16} = \dfrac{10}{20} }[/tex]

[tex]\bold{b) = \dfrac{3}{5} = \dfrac{6}{10} = \dfrac{9}{15} = \dfrac{12}{20} = \dfrac{15}{25} }[/tex]

[tex] \bold{c) \dfrac{2}{3} = \dfrac{4}{6} = \dfrac{6}{12} = \dfrac{10}{15} = \dfrac{12}{18} }[/tex]

Sixty tickets at $50 each cost

Answers

Answer:

$3000

Step-by-step explanation:

1 ticket = $50

Therefore, 6 ticket = 6x50

=$3000

expand the brackets (x+5)(3x-2).

Answers

Answer: 3x^2 +13x - 10

Step-by-step explanation:

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

x(3x-2) + 5(3x-2) = 3x^2 - 2x + 15x - 10

3x^2 - 2x + 15x - 10 = 3x^2 + 13x - 10

Answer:

3x²+13x-10

Step-by-step explanation:

(x+5)(3x-2)x(3x-2)+5(3x-2)3x²-2x+15x-103x²+13x-10

Consider the following incomplete deposit ticket:A deposit ticket. The amounts deposited were 782 dollars and 11 cents and 564 dollars and 64 cents. The subtotal was 1346 dollars and 75 cents. The total after cash received is 888 dollars and 18 cents.How much cash did Liz receive?

Answers

The amount of cash Liz received is; 458 dollars and 57 cents.

The amounts deposited were as follows;

782 dollars and 11 cents 564 dollars and 64 cents

The subtotal is therefore; 1346 dollars and 75 cents.

Since, the total after cash received is; 888 dollars and 18 cents.

The amount of cash received by Liz is;

1346 dollars and 75 cents - 888 dollars and 18 cents.

=458 dollars and 57 cents.

Read more on deposit ticket:

https://brainly.com/question/3044615

Answer:

A) 1145.39 on Edge

Step-by-step explanation:

Just took test :)

Write the expression c · d · c · c · d · b · c · d · d · b · d · d · d · d using exponents. Write the variables in alphabetical order.

Answers

Answer:

b^2 * c^4 * d^6

Step-by-step explanation:

i think this is right

A customer buys
3
shirts that cost
$
10
each. The store is having a sale for
15
%
off, and the sales tax is
6
%
. The store applies discounts before applying the sales tax to a customer’s total.

What is the customer’s total after the discount and sales tax are applied, in dollars and cents?

Answers

Answer:

4.77

Step-by-step explanation:

3 x 10 = 30

30 % 15 = 4.5

4.5 % 6 = 0.27

0.27 + 4.5 = 4.77

QUICK HURRY I NEED THE ANSWER TOO 10(-11) HURRY!!!!!

Answers

Answer:

-110

Step-by-step explanation:

Answer:

-110

Step-by-step explanation:

16. John's daily income is $120. His daily income is 20% more than Michael's daily income. What is Michael's
daily income?
Plz send step by step explanation
Will mark as a brainiest

Answers

Answer:

Michael's daily income is $96

Step-by-step explanation:

Given

john's income=$120

by question

John's income is 20%more than Micheal's

so,. Micheal's income= John's income - 20%of John's income

=$120 - 20%of $120

=$120 -20/100*$120

=$120 - $24

=$96

Answer:

100

Step-by-step explanation:

[tex]x + \frac{20x}{100} = 120 \\ x + \frac{x}{5} = 120 \\ 5x + x = 600 \\ 6x = 600 \\ x = 100[/tex]

20 POINTS PLEASE HELP ASAP!

Answers

Answer: increasing . . . positive . . . 2

Step-by-step explanation:

As best as I can tell . . .:

increasing . . . positive . . . 2.

The equation describing this line is y = 2x + 2

It has a positive (increasing) slope of 2 (with a y-intercept of +2).

What is the answer to this equation below and is it a one step or two step equation?
6x+8 = 59

Answers

6x=59-8
6x= 51
x=51/6
The answer is x=51/6
6x+8=59

Take away 8 on both sides

6x=51

x=51/6

Personally leave it as a fraction

Solve the equation for the y-value and choose whether it is a direct variation or inverse variation

xy = 7

Answers

Answer: Choice B

y = 7/x

inverse variation

=========================================================

Explanation:

We divide both sides by x to isolate y. That's how we go from xy = 7 to y = 7/x

This is an inverse variation because it's in the form y = k/x. The constant is k = 7.

2. What is the value of the pass after 15 rides?


# of Rides Bus Pass Value Rule
0 $100.00
1 $98.25
2 $96.50
3 $96.75
15 ??? $73.75 ??? Is my answer 73.75 right? If not does anyone know the correct answer


!plz help!

Answers

Answer:

im really confused. but its 2,75$ per pass?/ride? sorry i cant help much

Step-by-step explanation:

GHD989 guys please you this code for guathmath thank you .​

Answers

I will do that soon okay I will

Each cube in the prism is one cubic unit.

What is the volume of this rectangular prism

Answers

Answer:

I don't have answer but To find the volume of a rectangular prism, multiply its 3 dimensions: length x width x height. The volume is expressed in cubic units

Answer:

The volume of this rectangular prism is 90.

Step-by-step explanation:

V = L * W * H

V = 6 * 3 * 5

A college student takes out a $7 500 loan from a bank. Assuming the student has not started paying back the money, how much does the student owe . . .

1.1 . . . after 1 year, if the bank charges 3.8% interest each year?

Answers

The key to these questions is to understand the compounding. In this case, they are telling you the banks compound annually.

So the time period in the compounding equation is YEARS.

The compounding equation is:


(Future Loan Amount) = (Current Loan Amount) * (1 + the interest rate of the time period in decimals) ^ (number of time periods)


(Use this for all future questions too - if compounding monthly then time period is total number of months and interest rate is annual rate divided by 12 etc)


So in this case the answer is:


(Future Loan Amount) = (Current Loan Amount) * (1 + the interest rate of the time period in decimals) ^ (number of time periods)


(Future Loan Amount) = $7,500 * (1 + 0.038) ^ (11) = $11,304


(note - when answering its hard to see the original question. I believe the answer asked for 11 years. If not, if 1 year, etc just plug in that number into the equation - so one year is simply: 7500*1.038 = $7,785


Factor the Trinomial 6x^2 -23x +20
(And please show the work/steps.)

Answers

Step-by-step explanation:

6x²-23x+20

=>6x²-8x-15x+20

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

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

hope this helps you.

Step-by-step explanation:

the answer is in the image above

Please help me! It’s for geometry

Answers

The answer to this is 2 67.5

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