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
Alchen [17]
4 years ago
9

When a class took a math test, 15% of the class failed, 25% made some mistakes (but didn???t fail), and 24 students got perfect

scores. How many students were in the class?
Mathematics
1 answer:
elena-14-01-66 [18.8K]4 years ago
8 0
Okay so we have to figure out what percentage passed first let’s add all the percentages

25%+15%= 40%

Now subtract that from 100%

100%-40%= 60%

So 60% of the class passed

Now let’s use x to represent the total number of people on the class

x•0.6= 24

Now solve for x

x= 40

There are 40 people in the class we figure this out my converting 60% to 0.6 and multiplying it by 40 and getting 24 which is correct
You might be interested in
What is the total volume of the snow used to make the snowman if the head is 12 inches wide, the middle is 16 inches wide, and t
Nutka1998 [239]
The snowman is made of 3 spheres (balls) of snow. The diameters, from top to bottom, are 12, 16, 18 inches
Therefore, the radii of the 3 spheres are, respectively, 6, 8, and 9 inches.

The volume of a sphere of radius, r, is given by the formula: V = 4/3 π r3
So, the total volume of snow is the sum of the 3 volumes: V = 4/3 π (63 + 83 + 93)
= 4/3 π (1,457)
=6,099.97
Your answer would be D. 6,099.97
I hope this helps!
4 0
3 years ago
Find f(-1) given that f (2) = 2% + 2.02 + 32 +4
mojhsa [17]

Answer:

2.02/2%

Step-by-step explanation:

Divide

3 0
3 years ago
What is the maximum product of two numbers that add to 24?
Flura [38]

Let x and y represent the two numbers that add up to 24.

x + y = 24

=> y = 24 - x

The product of the two numbers is P = x*y = x*(24 - x) = 24x - x^2.

To maximize the product P, solve P' = 0 for x.

P' = 24 - 2x

24 - 2x = 0

=> x = 12

Also P'' = -2 which is negative

for x = 12

The product when x = 12 is 12*12 = 144

hope it helps!

6 0
3 years ago
Help me find the answer to this piecewise problem!! 20 Points !!!!
MrRissso [65]

Answer:

So we have x+3 if -3<=x<=-1

and                5   if   -1<=x<=1

Step-by-step explanation:

The one piece from -1 to 1 is horizontal so the line is in the form of y=a number.  It goes through 5 on the y-axis so the equation there is y=5.

From -3 to -1, that is a line with positive slope (since that part is increasing).

Slope=rise/run

We see from the filled in dot to the unfilled in dot that the rise is 2 and the run is 2 so the slope is 2/2=1.

So if we did extend this line where we go at on the y-axis?  It would go through 3 because starting from the unfilled dot and rising 1 and running 1 will get us to the 3 on the y-axis.

The equation of a line in slope-intercept form is y=mx+b.

We have m=1 and b=3 so the equation is y=1x+3 or just y=x+3.

So we have x+3 if -3<=x<=-1

and                5   if   -1<=x<=1

8 0
3 years ago
Read 2 more answers
Please help me before 12 noon today.​
masha68 [24]
Hiiiiisiiaisiiaisisisjsjsjja
8 0
3 years ago
Other questions:
  • The statement explains why the ordered pair is a solution to the system of equations. Is the statement true or false?
    12·2 answers
  • Q1. T or F? Every whole number is a counting number.
    14·1 answer
  • NEED HELP DUE TODAY !
    13·1 answer
  • Danielle's car wash took in $185 to help raise money for the drama club. Danielle needed to spend $32 for car wash supplies. How
    15·1 answer
  • Y=-1|x-2|+1 how to solve
    11·1 answer
  • If 5r + 4 = -4 – (6r – 8), then <br> –4r = ?<br><br> a)12<br> b) -2<br> c)-8<br> d) 0
    11·1 answer
  • The soccer coach wonders how many students made 15 or more goals. She also wants to know the least number of goals made. Which d
    6·1 answer
  • What angles are congruent and opposite each other when lines intersect
    5·2 answers
  • there are red blue and green ribbon on the tabel.there are a total of 36 ribbon.3/6 of the ribbon is red.how manny ribbon is red
    11·1 answer
  • Caden removed the label of a soup can like the one shown. What is the approximate area of the label if the can is 4 inches high
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!