39/10
And/or
3 9/10
And/Or
3.9
Use the identity:
P(A or B)=P(A)+P(B)-P(A and B)
Substitute given values,
0.88=0.62+0.47-P(A and B)
=>
P(A and B)=0.62+0.47-0.88=0.21
Answer:
108 children and 115 adults were admitted
Step-by-step explanation:
Create a system of equations where c is the number of children admitted and a is the number of adults admitted:
c + a = 223
3.5c + 6.8a = 1160
Solve by elimination by multiplying the top equation by -3.5:
-3.5c - 3.5a = -780.5
3.5c + 6.8a = 1160
Add the equations together and solve for a:
3.3a = 379.5
a = 115
So, 115 adults were admitted.
Find how many children were admitted by subtracting 115 from 223, the total number of people admitted:
223 - 115
= 108
108 children and 115 adults were admitted.
Answer:
h=111
Step-by-step explanation:
h-104=7
h=7+104
h=111
The correct result is 3x^2 - 6 - x^3.
<h3>What is Danielle's mistake?</h3>
A polynomial is an expression that contains values that is raised to a given power. The rules of algebra are applied when we are dealing with polynomials of any degree. There are several kinds of polynomials depending on the order to which the term is raised in the expression.
An expression is cubic when the terms are raised to power 2 and the expression is quadratic when the terms are raised to power 2 and so on.
In this case, we have the expressions; x^3 - 2x^2 and x^2 -6. We are expected to subtract x^3 - 2x^2 from x^2 -6.
The mistake of Danielle was that x^2 -6 was subtracted from x^3 - 2x^2 rather than x^3 - 2x^2 from x^2 -6.
The correct work is;
x^2 - 6 - (x^3 - 2x^2)
x^2 - 6 - x^3 + 2x^2
3x^2 - 6 - x^3
Learn more about polynomials:brainly.com/question/11536910
#SPJ1