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
Scilla [17]
3 years ago
14

in chemistry class Andrew has earned scores of 64 69 and 73 on three tests he must maintain an average of 72

Mathematics
1 answer:
olganol [36]3 years ago
6 0
You haven't told me what the question is.  But I put the mouse
to my forehead, closed my eyes, took a deep breath, and I could
see it shimmering in my mind's eye.  It was quite fuzzy, but I think
the question is

                   "What score does Andrew need on the next test
                     in order to raise his average to 72% ?"

The whole experience drew an incredible amount of energy
out of me, and the mouse is a total wreck.  So we'll just go ahead
and answer that one.  I hope it's the correct question.

The average score on 4 tests is

                                     (1/4) (the sum of all the scores) .

In order for Andrew to have a 72% average on 4 tests,
the sum of the 4 scores must be

                                         (4) x (72%)  =  288% .

Out of that total that he needs, he already has 

                            (64% + 69% + 73%) = 206%

on the first three tests.

So in order to average 72% for all 4 tests,
he'll need to score

                             (288%  -  206%)  =   82%

on the fourth one.
You might be interested in
find the height difference between the top of mt Everest 8848 metres and the Mariana Trench 10911 metresbelow sea level
zhuklara [117]
Mount\ Everest\to+8,848m\\\\Mariana\ Trench\to-10,911m\\\\Difference:|-10,911-8,848m|=|-19,759|\\\\\center={\boxed{19,759\ (m)}}\leftarrow answer
6 0
3 years ago
Daniel is a walmart he got a hoverboard for 100 dollars he pay with 250 dollars how much money did he get back
igor_vitrenko [27]
250-100=150 dollars in change
7 0
3 years ago
A store has 7 red shirts, 15 black shirts, 13 white shirts, and 5 green shirts. Select the portion of the shirts that are black.
Svetach [21]

First you must add all of the shirts together, which gives you: 40

Since 15 of those are black, then you need to put those 15 over the total number of 40, making it 15/40.

Then you must simplify by the highest number that will go into both, and since that number is 5, it will then go into 15 three times and it will go into 40 eight times.

That leaves you with the answer of: 3/8


Hope I helped and good luck on your test! Please mark as brainliest if right? :)

4 0
3 years ago
— 9y + 5у — 7y + Зу<br> I need help
Inessa05 [86]

Answer:

5gghbjfjhdjfjfifnrjfjfnfkfnf.jc79239nfkfnfjf

6 0
3 years ago
4. The constant of proportionality between the height of the water in a sink (h) in centimeters and the number of minutes it has
RUDIKE [14]

Answer:

i got 38

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • What is the name of the relationship between 1 and 8
    8·2 answers
  • Isaac currently has $200 in his savings account. He plans to deposit $20 each week.
    5·2 answers
  • The midpoint of AB is M(-1, -2). If the coordinates of A are (1,3), what are the
    12·1 answer
  • 10 POINTS<br> p+10/p-7=8/7<br> plz explain the awnser
    7·1 answer
  • Write an expression to model the
    5·1 answer
  • PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((
    13·1 answer
  • What is x minus 3 and y plus 4
    14·1 answer
  • 6 cm<br> 4 cm<br> 2 cm<br> 3 cm<br> What is the area of the polygon?
    12·1 answer
  • Can someone help me with this
    8·1 answer
  • At 4:00 a.m., the outside temperature was -28°F. How much warmer does 1 pc
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!