1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Papessa [141]
1 year ago
5

Can anyone please help me with 8th grade math? I will give BRAIN!!!

Mathematics
1 answer:
Anit [1.1K]1 year ago
7 0

The given percentage scores are:

80 , 92 , 91 , 75 , 89 , 84 , 0 , 85

A. Calculate the average

So, the average = (sum of the scores)/(number of the scores)

Sum of the scores = 80 + 92 + 91 + 75 + 89 + 84 + 0 + 85 = 596

The number of the scores = 8

So,

The average = 596/8 = 74.5%

Does the average score really represent her abilities ?

No, because there is outlier which is ( 0 ) which mean it may be absent this test

the other scores are within 75 and 92

Which mean the average is less than the reasonable minimum score

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

B. Brandee received 78% at the missed test

so, we will find the new mean:

The new sum of the scores = 80 + 92 + 91 + 75 + 89 + 84 + 78 + 85 = 674

The new mean = 674/8 = 84.25%

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

C. What different did 0% score make ?

So, 0% give us not accurate representation of the student abilities

Does this new mean represent her abilities accurately ?

Yes

You might be interested in
ADDITION OF INTEGERS<br> 21) 2 +6+-6<br> A) 0<br> B) 8<br> C) 1 D) 2
MrMuchimi

Answer:

D

Step-by-step explanation:

add up the positives then subtract the negative

5 0
3 years ago
Ms. Lee, a single adult, earned $65,000 in taxable income last year. Use the rate table below to calculate how much she must pay
Nookie1986 [14]
I think $16,250 tax. If you need explanation comment

4 0
3 years ago
Round your answer to the nearest hundredth
nalin [4]

Answer:

A = arctan(BC/CA) = arctan(8/2) = 75.96 deg

Hope this helps!

:)

3 0
3 years ago
Question 8b , thanks
marta [7]

Answer:

Step-by-step explanation:

a = \frac{2b+1}{3b-1}

b = 2/3

2b + 1 = 2*\frac{2}{3}+1\\\\=\frac{4}{3}+1\\\\=\frac{4}{3}+\frac{3}{3}\\\\=\frac{7}{3}\\\\3b-1 = 3*\frac{2}{3}-1\\\\=2- 1 = 1\\\\\\

a = \frac{2b+1}{3b-1}\\\\a=\frac{\frac{7}{3}}{1}\\\\=\frac{7}{3}\\\\

a = 7/3

b)

\frac{2b+1}{3b-1}=a\\\\

Cross multiply,

2b + 1 = a*(3b - 1)

2b + 1 = a*3b - 3*a

2b + 1 = 3ab- 3a

2b = 3ab - 3a - 1

2b - 3ab = -3a  - 1

b(2 - 3a) = -3a - 1

b =\frac{-3a - 1}{2 - 3a}

3 0
2 years ago
over the weekend and mom went out with her family they went to the morning Cafe while there they spent $44 her mom had a discoun
Jobisdone [24]

price after discount- $44-$11=$33

amount of tip- $4.95

bill after discount and tip- $37.95

amount of tax- $2.83

total bill- $40.78

5 0
3 years ago
Other questions:
  • Angelica is a sales representative for an applicator distributor she needs to make at least $5000 in weekly sales of a particula
    13·1 answer
  • I need help please.
    11·2 answers
  • What is the y-intercept of the exponential function? f(x)=−18(4)x+3+6?
    8·2 answers
  • 6. 21360<br>is written as __.​
    10·1 answer
  • Please help <br> The question is on Mathamatics
    11·1 answer
  • Help please please pleaseee!!!<br> (check the picture)
    10·1 answer
  • Need this answered ASAP
    6·1 answer
  • Ralph bought some oranges. The weight of the oranges was 2.5 kilograms. How many grams is this? 25,000 g 0.025 g 0.0025 g 2,500
    11·2 answers
  • Elp help help help help help help help help help help help hepl heplhpekhpleh
    11·1 answer
  • Instructions: Find the surface area of the figure below. Round your answers to the nearest tenth, if necessary.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!