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
aksik [14]
3 years ago
11

20 of the students questioned chose Maths,

Mathematics
1 answer:
Dimas [21]3 years ago
3 0

The number of people that did not choose math or pe is the same amount of people who chose pe

You might be interested in
A ferris wheel can accommodate 70 people in 20 minutes; how many people could ride the ferris wheel in 4 hours?
kirill115 [55]

Answer:

840

Step-by-step explanation:

if it can hold 70 in 20 minutes it can hold 210 in 1 hour and 4x210 equals 840

3 0
3 years ago
Solve the following word problems using a system of equations. The sum of two numbers is 36. One number is two more than the oth
juin [17]

Answer:

24,12

Step-by-step explanation:

suppose,

x+y=36

x=2y

2y+y=36

y=12

x=24

4 0
3 years ago
Please help me out and help me show work ??
DochEvi [55]

Answer:

23 is the smallest number

Step-by-step explanation:

Three consecutive numbers are numbers that come in a row. So if the first number is n then the next is n+1 and the following is n+2.

All together they add to 72.

So n + n+1 +n +2 = 72.

3n + 3 = 72

3n = 69

n = 23

8 0
3 years ago
Find the intersection points using substitution or elimination for each system of equations:
natka813 [3]

Answer:

Step-by-step explanation:

Okay, so I think I know what the equations are, but I might have misinterpreted them because of the syntax- I think when you ask a question you can use the symbols tool to input it in a more clear way, otherwise you can use parentheses and such.

Problem 1:

(x²)/4 +y²= 1

y= x+1

*substitute for y*

Now we have a one-variable equation we can solve-

x²/4 + (x+1)² = 1

x²/4 + (x+1)(x+1)= 1

x²/4 + x²+2x+1= 1

*subtract 1 from both sides to set equal to 0*

x²/4 +x^2+2x=0

x²/4 can also be 1/4 * x²

1/4 * x² +1*x² +2x = 0

*combine like terms*

5/4 * x^2+2x+ 0 =0

now, you can use the quadratic equation to solve for x

a= 5/4

b= 2

c=0

the syntax on this will be rough, but I'll do my best...

x= (-b ± √(b²-4ac))/(2a)

x= (-2 ±√(2²-4*(5/4)*(0))/(2*(5/4))

x= (-2 ±√(4-0))/(2.5)

x= (-2±2)/2.5

x will have 2 answers because of ±

x= 0 or x= 1.6

now plug that back into one of the equations and solve.

y= 0+1 = 1

y= 1.6+1= 2.6

Hopefully this explanation was enough to help you solve problem 2.

Problem 2:

x² + y² -16y +39= 0

y²- x² -9= 0

6 0
3 years ago
Lola saved $86.25 in 3 months. She saved $30.75 in the first month and $7.99 in the second month. How much money did Lola save i
ipn [44]

Answer:

$47.51

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • If x / 4=5, is x / 5 = 4 also true? why or why not?
    7·2 answers
  • Add​​ using a number line.
    7·1 answer
  • What is the distance between 17 and 31 on a number line
    7·2 answers
  • An old truck has a fuel efficiency rating of 12 mpg. What is the cost
    11·1 answer
  • A large University accepts 70%of the students who apply. Of the students the university accepts, 50% actually enroll. If 20,000
    12·2 answers
  • what's the selling price if $42.50 was the original price and the markup is 6% with a discount of 5%​
    9·1 answer
  • Noah is going to invest in an account paying an interest rate of 3.7% compounded annually. How much would Noah need to invest, t
    10·1 answer
  • 19) The sales tax on a $105 digital camera is $7.15. What is the sales tax rate? (Round your answer to the nearest tenth.)​
    11·1 answer
  • California license plates used to consist of a system of a number then letter followed by a number then a letter and a number th
    5·1 answer
  • 9/4 divided 5/8 <br> I don’t know help me
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!