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tatiyna
3 years ago
9

In a certain college, 25% of the students failed mathematics, 15% of the students failed chemistry and 10% of the students faile

d both mathematics and chemistry. a student is selected at random. if he failed chemistry what is the probability that he failed mathematics?

Mathematics
1 answer:
Reptile [31]3 years ago
3 0
I hope this helps you.

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At most, Alana can spend $40 on carnival tickets. Ride tickets cost $4 each, and food tickets cost $2 each. Alana buys at least
Lapatulllka [165]

Answer:

4 is the maximum number of ride tickets she can buy

Step-by-step explanation:

Here, r represents the number of ride tickets and f represents number of food tickets.

The system of inequalities is given as:

r+f\geq 16                         ....[1]

4r+2f\leq 40                    .....[2]

To solve Mathematically:

Multiply equation [1] by -2 we have;

-2r-2f \leq -32               .....[3]

Add equation [2] and [3] we have;

2r \leq 8

Divide both sides by 2 we have;

r \leq 4

Since r must be less than or equal to 4.

You can also see the graph of the given system of inequalities as shown below.

The intersection point is, (4, 12)

Therefore, the maximum number of ride tickets she can buy is, 4

3 0
3 years ago
Plz i need help i don't understand it
andreev551 [17]

Answer:

y=5,2 and -3

we have to put the values of X and then solve the equation.

<h2>Have a good day</h2>
5 0
3 years ago
Read 2 more answers
Are the following two expressions equivalent? 7+7x ; 7 (x+ 1/7 )
love history [14]

Answer:

no 7(x+1/7) is not equivalent to 7+7x

Step-by-step explanation:

6 0
2 years ago
Find the value of y<br> A)y=2<br> B)4 √3 / 3<br> C)4<br> D)4 √3
saul85 [17]
I'm so hungry lol xD, the answer is C
8 0
3 years ago
Read 2 more answers
What is the solution to this equation? 2x + 3 = x - 4
AfilCa [17]

Answer:

Step-by-step explanation:

First, isolate the variables onto one side of the equation.

2x + 3 = x - 4

(subtract x)

x + 3 = -4

Then, remove any remaining numbers.

(subtract 3)

x = -7

I hope this helps!

6 0
3 years ago
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