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
natali 33 [55]
1 year ago
11

On the last chemistry exams a student scored 83, 89, and 92. What score must the student earn on the next exam to have an averag

e of at least 90?
Mathematics
1 answer:
Dmitrij [34]1 year ago
5 0

In order to get an average of 90, the student needs to get a score of 96.

The average can be found by summing up all the numbers in a data set and then dividing it by the number of characters in that dataset.

Assuming the average is 90, and that the score the student needs to get is x, the formula would be:

<em>Average = Sum of scores / Number of scores </em>

90 = (83 + 89 + 92 + x) / 4

90 x 4 = 264 + x

x = 360 - 264

x = 96

The student needs to get a score of 96 on the last exam.

<em>Find out more at brainly.com/question/13406591.</em>

You might be interested in
The unit of measure that would be best to estimate the height of a cat would be:
snow_tiger [21]
Well usually a cat isn’t that big, probably a foot in length BUT heightwise it’s best to measure in inches because the average cat isn’t a whole foot tall!
8 0
3 years ago
What is the slope of a line perpendicular to the line y = −14x – 1?
mash [69]

Answer:

<h2>         m = ¹/₁₄</h2>

Step-by-step explanation:

y=m₁x+b₁   ⊥   y=m₂x+b₂   ⇔    m₁×m₂ = -1

{Two lines are perpendicular if the product of theirs slopes is equal -1}

y = -14x - 1   ⇒   m₁ = -14

-14×m₂ = -1        ⇒    m₂ = ¹/₁₄

So, the slope of a line perpendicular to the line y = -14x - 1 is m = ¹/₁₄

5 0
3 years ago
500 portions of strawberries have been ordered for the tournament, but because of bad weather only
Citrus2011 [14]

We conclude that 375 portions can be sold.

<h3>How many portions can be sold?</h3>

We know that 500 portions have been ordered, but only 5/6 of that was delivered, so the number of delivered portions is:

p = (5/6)*500 = 416.6

Which we can round to the next whole number, 417.

Now we know that 10% of these are given to the players and staff, then the number of portions that can be sold is the 90% of 417, which is:

N = 417*(90%/100%) = 417*0.9 = 375

We conclude that 375 portions can be sold.

If you want to learn more about percentages:

brainly.com/question/843074

#SPJ1

8 0
1 year ago
A quadratic equation has zero real number solutions. Which could be the discriminant value associated with this equation?
andriy [413]
It will be -5 I pretty sure but I’m not sure
8 0
3 years ago
Which equation represents the data in the table?
gavmur [86]

Answer:

c

Step-by-step explanation:

It all adds up. Ex; 2*2=4   4-3=1

and continues through the rest of the table

8 0
2 years ago
Other questions:
  • Manila walked 4 miles an hour and arrived home in 30 minutes. Her sister ran 6 miles an hour, how long did it take for her to ge
    14·1 answer
  • there are 20 students in the band .the wind pipe players make up 3/4 of the band .how my people in the band play wind pipes?
    11·1 answer
  • Allen watched a ladybug in the yard. It crawled 1 3/4 inches, then rested for a bit, and then crawled 7 3/4 inches more. How far
    11·2 answers
  • What is the solution to the equation x/4 = 16/12 ?<br><br> x=1<br> x=2<br> x=8
    6·2 answers
  • lynn has a watering can that holds 16 cups of water,and she fills it half full.then she waters her 15 plants so that each plant
    8·2 answers
  • Dominic works on the weekends and on vacations from school mowing lawns in his neighborhood. For every one lawn he mows, he char
    15·2 answers
  • PLS HELP ASAP!!!!!!!!!!!!!!!
    12·2 answers
  • For the following function, evaluate f(2): f(x) = |x - 8| + 2​
    9·2 answers
  • I need help PLSSSSS. ASAP​
    7·1 answer
  • Given the triangles above, what is the measure, in degrees, of angle x?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!