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AveGali [126]
2 years ago
6

in a class, 1/3 of the students failed their unit test. If 8 students failed the test, how many students were in the class

Mathematics
1 answer:
vazorg [7]2 years ago
7 0

Answer:

24 students

Step-by-step explanation:

Set up an equation:

1/3s=8

with s being students

Solve for s

s=8(3)\\s=24

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There are 8 candidates for student government: Hal, Mary, Ann, Frank, Beth, John, Emily, and Tom. The three candidates that rece
sveticcg [70]

Answer:

56

Step-by-step explanation:

Given that there are 8 candidates for student government: Hal, Mary, Ann, Frank, Beth, John, Emily, and Tom.

The three candidates that receive the highest number of votes become candidates for a runoff election.

i.e. 3 persons out of 8 to be selected for becoming candidates for a runoff election.

Since order does not matter we use combinations here

3 persons out of 8 can be done in 8C3 ways

= 56

no of 3-candidate combinations  possible are 56

3 0
4 years ago
the dot plot shows the mass, in grams, of several substances in an experiment. How many substances has their mass recorded durin
crimeas [40]

Answer:

the answer would be 13

Step-by-step explanation:

3 0
3 years ago
How many days are there in 4 years if the fourth year is a leap year?
Katen [24]
365×3= 1095
1095+366= 1461
1,461 days.
6 0
3 years ago
Read 2 more answers
The denominator of a fraction is three more than twice the numerator. If both numerator and denominator are decreased by one, th
o-na [289]
Old Condition
Numerator = n = x
denominator = d = 2n + 3

New Condition
(x - 1) /(2x + 3 - 1) = 7 / 16
(x - 1) / (2x + 2) = 7 / 16 

Cross multiply and solve
16*(x - 1)  = 7 * (2x + 2) Remove the brackets.
16x - 16 = 14x  + 14 Add 16 to both sides.
16x = 14x + 30 Subtract 14x from both sides.
2x = 30 Divide by 2
x = 15

You really should check this.
Original fraction
15/33
Now subtract 1 from the top and bottom.
14/32 Divide both by 2
7 / 16 which checks out perfectly 

6 0
4 years ago
HELP!!!!!
podryga [215]
Solve for the x-max or h :\
-b/(2a)=-8/(2*-2)=2=k
plug it in to equation to get k:/
y(2)=-2(2)^2+8(2)+3
-8+16+3=11=k
y=a(x-2)^2+11

solve for a by pluging (0,0)
then a= -11/4
y=-11/4(x-2)^2+11

8 0
4 years ago
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