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
Tanzania [10]
3 years ago
12

The average of your first three test grades is 78. what grade must you get on your fourth and final test to make your average 80

?
Mathematics
1 answer:
Alex73 [517]3 years ago
7 0
You need to score 86
You might be interested in
The value of a boat, in dollars, x years after its purchase is represented by the function.
DIA [1.3K]
The average decrease in value can be solve by first solving the value at year 1 and year 2
and i think the equation is <span>f(x)=10,000(0.73)^x</span>

at x = 1

<span>f(x) = 10,000(0.73)^x
</span><span>f(1) = 10,000(0.73)^(1)
f(1) = 7300

at x = 2
</span><span>f(x) = 10,000(0.73)^x
</span><span>f(2) = 10,000(0.73)^(2)
f(2) = 5329

so the average decrease = ( 7300 - 5329) = $ 1971 per year</span><span>
</span>
8 0
3 years ago
I need help this is 6th grade Question 3×(5+4^2)-10
bonufazy [111]
Using PEMDAS the you start with parentheses and exponents 4x4 would be 16 times 2 is 32 plus 5 is 37 then multiply that by 3 = 111 subtract 10 and get 101
8 0
3 years ago
Please help! Correct answr only, please! The following information matrices show the number of breakfasts &amp; lunches sold at
Ierofanga [76]

Answer:

Hello There Again. The correct answer is D.

Explanation: Because it shows that you need to subtract 2.75 - 3.50 which that will be 75. So the correct answer will be D.

Hope It Helps! :)

6 0
3 years ago
What's the answer to this? (Zearn)
elena55 [62]

Answer: 68 1/18

Step-by-step explanation:

Area of the large rectangle:

11 1/3 x 7 = 79 1/3

Area of tiled floor:

4 5/6 x 2 1/3 = 11 5/18

79 1/3 - 11 5/18 = 68 1/18

6 0
3 years ago
Please help problem below 15 POINTS!!
solniwko [45]

i=\frac{12*1.9x^{x} }{x}

3 0
3 years ago
Other questions:
  • you have two nickels three dimes and a quarter using at least one of each coin, how many different amounts of money can you make
    14·1 answer
  • Jaida read 375 in 3 days how many pages does she read in one day
    13·1 answer
  • Show that the line integral is independent of path by finding a function f such that ?f = f. c 2xe?ydx (2y ? x2e?ydy, c is any p
    14·1 answer
  • A smaller square park has an area 3600 square meters what is the length of one side of the park
    13·1 answer
  • What is the range of range of the relation shown in the table?
    6·1 answer
  • Explain how to use the combine place vales strategy to fine 223- 119
    5·1 answer
  • What it means by that
    11·1 answer
  • Find the slip of the line through each pair of points (11,6),(14,17)
    12·1 answer
  • 100 POINTS! ANSWER HAS TO BE CORRECT TO GET BRAINLIEST! HELP!
    15·1 answer
  • Find the area of the figure, 5 in. 2 in. 4 in. 5 in.​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!