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
Temka [501]
3 years ago
12

A total of 50 juniors and seniors were given a mathematics test. The 35 juniors attained an average score of 80 while the 15 sen

iors attained an average of 70. What was the average score for all 50 students who took the test?
Mathematics
1 answer:
Alik [6]3 years ago
8 0

Answer:

77

Step-by-step explanation:

Firstly, we need to calculate the total score of the junior students and the total score of the senior students.

The total score of the junior students is 35 * 80 = 2,800

The total score of the senior students is 15 * 70 = 1050

The total score is thus 2,800 + 1,050 = 3,850

The average score of the 50 students is thus 3,850/50 which equals 77

You might be interested in
Data set with one value so that the mean of the data is 7. 7, 9, 4, 10, 7,
xz_007 [3.2K]

Answer:

The mean ( average ) is 7.54

Step-by-step explanation:


8 0
3 years ago
What is the amount you pay for the purchase of a house that decreases the amount of the loan?
Leviafan [203]
Down payment is the amount you pay for the purchase of a house that decreases the amount of the loan. It decreases the amount of interest paid over the lifetime of the loan.
8 0
3 years ago
HELP ASAP!!! DUE IMMEDIATELY!!!
Setler [38]

Answer:

Angle ABD is 16 degrees and Angle DBC is 74 degrees

Step-by-step explanation:

Question 6. x+9+11x-3=90. 12x+6=90 -6 on both sides and 12x=84 divide each side by 12 and x= 7 angle ABD is x+9 so 7 +9= 16. Angle measure of ABD is 16 degrees. Measure of angle DBC is 11x -3 so 11 times 7=77. 77-3= 74. So the measure of angle DBC is 74 degrees and this answer is right because they both add up to be 90 degrees. Hope this helped! :)

7 0
2 years ago
Which point lies on the circle represented by the equation (x+5) + (y-9) = 8
olga_2 [115]

Answer:

(-5,9+√8)

Step-by-step explanation:

There are two ways in which you can find a point that lies in the circle. One of them is to do y the subject of the formula, and another one is to determine the center of the circumference, and with the information of the radius, you can sum this value upward or downward.

the general equation of a circle is:

(x-h)^2+(y-k)^2=r^2

with center at (h,k)

you have the following equation:

(x+5)^2+(y-9)^2=8\\\\h=-5\\\\k=9\\\\r=\sqrt{8}

Then, the center is (-5,9)

if you sum the value of the radius in one of the fourth directions (up, down, left, right), for example upward you have

(-5,9+r)=(-5,9+\sqrt{8})

Then, one point that lies in the circle is (-5,9+√8)

3 0
3 years ago
Solve for x :<br><br>14x + 2 = 9x - 3​
exis [7]
The answer for your question is x=-1

8 0
2 years ago
Other questions:
  • Find two numbers that have the maximum possible product and a sum of 7
    6·2 answers
  • What is the length of yz if rst is similar to xyz
    12·1 answer
  • Solve the formula, d=r*t for t
    12·1 answer
  • Desmond knows that 2 cakes will feed 11 people. If he is inviting 58 people to his parents' anniversary party, how many cakes wi
    5·1 answer
  • How can I turn Celsius to Fahrenheit
    7·2 answers
  • you have 1000 to invest in an account and you need to have 1500 in one year what interest rate would you need to have in order t
    14·1 answer
  • !! PLEASE HELP ITS DUE SOON
    14·1 answer
  • Will give u brainliest! <br> plz help me out
    10·2 answers
  • I need the statement and reasons <br>and whether its a sss sas asa hl​
    8·1 answer
  • If a coordinate was dilated from (-3, 2) to (-6, 4), what was the scale factor used?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!