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
ioda
3 years ago
10

John knows that his first 4 test grades were 84,79,82,88. Find John’s grade on the fifth test if his average was 83.8

Mathematics
1 answer:
Debora [2.8K]3 years ago
5 0

Answer: The fifth grade is 86

Step-by-step explanation:

Given that there are five grades, let the missing fifth grade be represented by x:

84 +79 +82 +88 + x /5 = 83.8

333 + x/5 = 83.8

Next, we cross multiply:

333 + x = 83.8 x 5

333 + x = 419

Subtract 333 from both sides of the equation to get the value of x

333 + x - 333 = 419 - 333

x = 86

You might be interested in
For a rectangle with length of
AveGali [126]

Answer:

2x+5

Step-by-step explanation:

Formula for the perimeter of a reactangle= 2(l+b)

So,

2(l+b) = 10x+18

2(3x+4 + b) = 10x+18

Rearrange and solve

3x+4+b = 5x+9

b = 5x+9 - 3x - 4

b = 2x+5

Thus the measurement of the width = 2x+5

Hope this helps

6 0
2 years ago
PLS HELP<br> What is the area, in square of the parallelogram below?
Arlecino [84]

Answer:

35 square units

Step-by-step explanation:

Area of the parallelogram = 7*5 = 35 square units

6 0
3 years ago
Nate walk 11 miles in 4 hours. At what unit rate does Nate walk?
coldgirl [10]

Answer:

2.75 or 2 3/4

Step-by-step explanation:

just divide 11/4 that's how many miles Nate walked every hour

4 0
3 years ago
Graph the function r(x) = -1/4 |x|
Free_Kalibri [48]
Here is your function graphed

8 0
3 years ago
46 decreased by twice the number
snow_lady [41]

-46

Hope this helps!

May I please have brainliest? :D

4 0
2 years ago
Read 2 more answers
Other questions:
  • In one store, bananas cost 60 cents per pound. The cost, in dollars, of x pounds of bananas is 0.6x. What is the cost of 2.50 po
    14·2 answers
  • Solve for x, y, and z.
    8·1 answer
  • PLEASE HELP ME ASAP
    7·1 answer
  • If 3 meters of fence cost 29$, how much would it cost lateisha to build the entire fence around her yard? write a proportion to
    13·1 answer
  • jeremy paid 25.60 for 4 boxes of chocolates this can be expressed using the equation y=kx how much would it have cost jeremy if
    8·1 answer
  • Abcd is a kite. Find the value of X <br> X+20 <br> X+10
    11·1 answer
  • Divide x^4+3x^3-8x^2+5x-9 by x+5
    12·1 answer
  • Name A tangent please, due in an hour
    8·1 answer
  • Adam had -$76 in his account. He then deposited $322. How much was in his account after his deposit?
    6·1 answer
  • How do you get your answer
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!