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
MatroZZZ [7]
3 years ago
12

Your current test average in Science is an 81. You’ve taken 5 tests. You only have one test remaining (there is not extra credit

on your test). You can raise your average to an 85.
Mathematics
2 answers:
stepladder [879]3 years ago
8 0
If you want to know what grade is needed to raise your average to an 85, add all tests, then divide by total number of tests to equal average of 85. The x value is the grade needed on the final to raise the overall class grade to an 85.

x= final test


(81 + 81 + 81 + 81 + 81 + x)/6= 85
add in parentheses

(405 + x)/6= 85
multiply both sides by 6

405 + x= 510
subtract 405 from both sides

x= 105 grade needed


ANSWER: Since there is no extra credit, it is impossible to raise the overall average to an 85 because they would need a final test grade of 105.

Hope this helps! :)
Leto [7]3 years ago
5 0
What exactly are you asking?
You might be interested in
Help please and thanks will mark as brainliest
Paraphin [41]
11)

3x = 180
x = 60

12)
6x + 18 = 180
6x = 162
x = 27
8 0
3 years ago
Which lists all the integer solutions of the inequality |x| < 3?
Alexus [3.1K]
Simple the answer is c 100% positive 
5 0
3 years ago
Read 2 more answers
Rose can make 5 3/4 bookmarks in one hour . How many bookmarks can she make in 3 1/2 hours
kari74 [83]

Answer:

I haven't done that type of math in a while but I cam up with 21 bookmarks

7 0
3 years ago
EXTRA POINTS! PLEASE BE PRECISE!
Mashutka [201]

Answer:

a 8 1/4 c

Step-by-step explanation:

I converted to decimals first. 4.5 c water to 2 c cream. wants to use 3.66 cream. 3.66/2= 1.83. she is increasing cream by 1.83%, next multiply same % to water. 4.5 cups * 1.83 = 8.235 which is closest to 8.25= 8 1/4

8 0
3 years ago
If f(x) = -x + 5 and g(x) = x^2, what is (g° (-1)?
ipn [44]

Answer:

(g\circ f)(-1)=36

Step-by-step explanation:

We are given the two functions:

f(x)=-x+5\text{ and } g(x)=x^2

And we want to find:

(g\circ f)(-1)

This is equivalent to:

=g(f(-1))

So, evaluating f(-1) first, we acquire:

f(-1)=-(-1)+5=6

Then by substitution:

=g(6)

So:

=(6)^2=36

Therefore:

(g\circ f)(-1)=36

Your answer is indeed correct.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Population in 1990 was 134 million. In 2000 it was 139 million. What was it in 2014
    6·1 answer
  • A can of tennis balls costs $6. The total cost c of n cans, including sales tax t, is given by the equation c = 6n + t. Which is
    5·1 answer
  • Write an equation to show "three times a number is 11".
    12·2 answers
  • The minute hand of a clock is 3 inches long. How far does the tip of the minute hand move in 5 minutes
    14·1 answer
  • a wedding reception was being held at Stefanina's restaurant can you please show how you have the answer
    7·2 answers
  • Find the surface area of the rectangular prism.<br> 6 yd<br> 3 yd <br> 1 yd
    8·1 answer
  • A school raised $4,000 for its new library. 36% of the money is used to buy reference book. How much money is used to buy refere
    5·1 answer
  • Which number line best shows the position of square root of 7?
    15·1 answer
  • Thanks for all the help how can i repay?
    15·1 answer
  • Write the equation for the graph
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!