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
tester [92]
2 years ago
8

Chloe has taken four tests this semester. Her scores on the three tests are 87, 78, and 61. If her test average is 78.5, what is

her grade on her 4th test?
Mathematics
1 answer:
aniked [119]2 years ago
6 0

n = last test

(87 + 78 + 61 + n) : 4 = 78,5

87 + 78 + 61 + n   = 78,5 x 4

n = 314 - 226

n = 88

You might be interested in
Hello! is y = 3x - 3 proportional or non-proportional?? please help!
MissTica

A proportional graph is a straight line that goes through the origin while a non-proportional graph is a straight line that doesn't go through the origin.

y = mx + b

the b represents the y-intercept, so -3 is the y-intercept in the equation y = 3x -3

therefore, the line doesn't go through the origin and is a non-proportional equation

6 0
2 years ago
Convert 84% percent to a fraction in simplest form.
Svetlanka [38]
84/100 which would then be 42/50 which will then be 21/25
8 0
3 years ago
Read 2 more answers
I need help with my math homework
Rashid [163]
Hello. This is how to do it...

Step 1: Figure out what "N" means.

Step 2: Multiply whatever "N" means by -4

Step 3: Subtract  -4 times "n"

Hope this will help! Im sorry if i was a pain tho...
5 0
3 years ago
If a car goes around a turn too quickly, it can leave tracks that form an arc of a circle. By finding the radius of the circle,
liubo4ka [24]
Given:
Segment AC = 130 feet
Segment CD = 70 feet

I think that I'll be using the Pythagorean Theorem in finding the value of r. r will be the hypotenuse

Segment CE = (r - 70 feet)

r² = a² + b²
r² = 130² + (r-70)²
r² = 16,900 + (r-70)(r-70)
r² = 16,900 + r² - 70r - 70r + 4900
r² - r² + 140r = 16,900 + 4,900
140r = 21,800
r = 21,800/140
r = 155.71 feet

The radius of the circle is 155.71 feet.

8 0
3 years ago
Read 2 more answers
F(x) = 3x + 5, g(x) = 6x2 Find (fg)(x).
shepuryov [24]

Answer:

18x² + 5

Step-by-step explanation:

To evaluate f(g(x)), substitute x = g(x) into f(x)

f(g(x))

= f(6x²)

= 3(6x²) + 5

= 18x² + 5

4 0
3 years ago
Other questions:
  • Find the value of x. <br><br> 13,15,17,x,20,21; The median is 18.
    12·1 answer
  • Which graph best represents a logarithmic function?
    7·2 answers
  • Please help..8+5×(7+8)÷3-4
    8·2 answers
  • 1. What are the zeros of the function?
    9·2 answers
  • Triangle with exactly <br> 2 equal sides
    7·2 answers
  • Two spinners divided in 3 equal sections are labeled 1 through 3 what is the probability of both spinners landing on 2
    12·1 answer
  • PLS PLS HELP Pls help me
    10·1 answer
  • “If a population is growing at a rate of 3% per year, how long will it take to double? Show work.”
    15·1 answer
  • Are these lines parallel?
    14·1 answer
  • Help with number 11-please
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!