answer =15 books
Step-by-step explanation:
3/4 * 20 = 60 / 4= 15 books
Answer:the answer is 520
Step-by-step explanation: you add 25 to tinas account 12 times
then you add 35 to cliffs account 12 times also and they eventually equal 520 ya
Answer:
P(B | T)=3/13
Step-by-step explanation:
The question is missing the Venn diagram that shows the value of each variable.
From the Venn diagram we can see there are 10 paintings that not T and not B. That means the total number of paintings that either T or B is
P(T∪B) = 60-10= 50 paintings.
There are x(x-2) + x paintings from 20th century
P(T)= x(x-2) + x = x^2 - x
There are 2x+8 +x British paintings.
P(B)= 2x+8 +x = 3x +8
There are 2 paintings that both T and B
P(T∩B)= x
Using union equation we can find the x
P(T∪B) = P(T) + P(B) - P(T∩B)
50= x^2 - x + 3x +8 - x
x^2 + x + 8 - 50 = 0
x^2 + x + -42 =0
(x-6) (x+7)=0
x1= 6 x2=-7
Since x can't be minus, then x=6.
The question asking how much conditional probability that a random T paintings is also British. The calculation will be:
P(B|T)= P(B∩T) / P(B) = x/ (3x +8)= 6/(6*3+8)= 6/26= 3/13
<u>Corrected Question</u>
I am donating packages for Christmas drive. After the first week, I spent 126 to donate three children packages and 8 adult packages. After two weeks I spent 108 to donate six children packages and 4 adult packages. What is the price of each type of package
Answer:
Adult package costs $12
Child's package costs $10.
Step-by-step explanation:
Let the cost of a child's package =c
Let the cost of an adult package =a
<u>First Purchase</u>
Cost of three children packages and 8 adult package=$126
<u>Second purchase</u>
Cost of six children packages and 4 adult packages=$108
6c+4a=108
Multiply this equation by 2 to make the coefficient of a the same as the other equation
We solve the two resulting equations simultaneously
Subtract
-9c=-90
Divide both sides by -9
c=10
Substitute c=10 into 3c+8a=126 to solve for a
3(10)+8a=126
8a=126-30
8a=96
Divide both sides by 8
a=12
Therefore, an adult package costs $12 while a child's package costs $10.
С Step-by-step explanation: (a / b) ^ 5 = a ^ 5 / (b ^ 5) Similarly , (- 11/14) ^ 5 = (- 11) ^ 5 / (14 ^ 5)