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
Karo-lina-s [1.5K]
1 year ago
9

Suppose you average 82 on your first 7 test. What must you score on the eighth test to raise your average to 84?

Mathematics
2 answers:
natima [27]1 year ago
7 0

so hmmm on average on the last 7 test, you get 82, so hmmm we could say that on each of the 7 tests you got 82, so you got 82, 7 times.

now, let's say in the 8th test, you get a grade of "g", now, if we were to get an average of all 8 tests, that means the average will simply be (82*7) + "g", and we know that's 84, so

\cfrac{(\stackrel{\textit{sum of all first seven tests}}{82+82+82+82+82+82+82})~~ + ~~g}{8}~~ = ~~84\implies \cfrac{(82\cdot 7)~~ + ~~g}{8}~~ = ~~84 \\\\\\ \cfrac{574+g}{8}=84\implies 574+g=672\implies g=672-574\implies g=98

lubasha [3.4K]1 year ago
5 0
655 I thinks sorry son muy tarajangos
You might be interested in
G=(z-s)/r solve for z
ryzh [129]

Step-by-step explanation:

G = (z-s) ÷ r

G × r = (z- s)

Gr + s = z

6 0
3 years ago
Determine the first four terms of the sequence in which the nth term is...
Anon25 [30]

Answer:

1/5, 1/6, 1/7, 1/8

Step-by-step explanation:

The formula for the sequence is (n+3)!/ (n+4)!

The first terms uses n=1

a1 = (1+3)!/ (1+4)! = 4!/5! = (4*3*2*1)/(5*4*3*2*1) = 1/5


The first terms uses n=2

a2 = (2+3)!/ (2+4)! = 5!/6! = (5*4*3*2*1)/(6*5*4*3*2*1) = 1/6


The first terms uses n=3

a3 = (3+3)!/ (3+4)! = 6!/7! = (6*5*4*3*2*1)/(7*6*5*4*3*2*1) = 1/7


The first terms uses n=4

a4 = (4+3)!/ (4+4)! = 7!/8! = (7*6*5*4*3*2*1)/(8*7*6*5*4*3*2*1) = 1/8

7 0
3 years ago
Read 2 more answers
What’s the difference between x and 4 is greater than 10
daser333 [38]

Answer:

There is a whole range of speeds at which you are allowed to drive, not just one. In cases like this where there is more than one correct answer, we use inequalities, not equations, to represent the situation.

Inequalities are mathematical statements that define a range of values. They are easily recognizable because they contain the symbols <, ≤,>, or ≥.

6 0
3 years ago
A parabola has a vertex at the origin. The focus of the parabola is located at (–2,0).
12345 [234]

dam what Answer:

Step-by-step explanation:dom

no it’s not working

5 0
3 years ago
Help please, answer number 1.
gayaneshka [121]

Answer:

mmmm cnt get to it srry

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • A rope is 225 centimeters long. You need the rope to be 1 1/2 meters long. How many centimeters should you cut off?
    9·2 answers
  • there is six buses parked in a lot. Each bus needs 3 1/3 quarts of oil. How much oil is needed by all of the buses Express you a
    13·2 answers
  • The sum of a number and its reciprocal is <br> 61<br> 30<br> .<br> Find the numbers.
    13·1 answer
  • I had trouble understanding algebra and now I am in geometry so If you can help me understand both that will be good. I have thi
    10·1 answer
  • X^2-3/4x +3/8 equals what
    15·1 answer
  • Solve the following system of equations by using the substitution method.
    6·2 answers
  • What point is between 4,16 and 16,16
    5·1 answer
  • X + 2 = -50<br><br> Please help!<br><br> ASAP!
    12·2 answers
  • Leon drove 100 miles in 2 hours. Find the constant of variation.
    12·2 answers
  • Which linear function is represented by the graph?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!