Answer:
The mass of the block is 
Step-by-step explanation:
we know that
The density is equal to the mass divided by the volume
step 1
Find the volume of the granite block
we know that
The volume of a rectangular prism (granite block) is equal to

substitute the values

step 2
Find the mass of the block

we have


substitute the values and solve for the mass


Answer:
Probability=
Step-by-step explanation:
As it is given that
Probability of toy A is defective is =P(A) = 
Probability of toy b is defective if A is defective = P (B)=
WE have to find the P(A n B)
By the law of Probability
P(A n B) = P (A).P(B)
putting the values given to us
P(AnB)=
* 
Probability=
Answer: Real world problem is "A student have c toffee he distribute
th part of those toffees to his friends. He gave total 21 toffees to his friend".
Explanation:
Let a student have c number of toffees in his bag.
It is given that he distribute
th part of those toffees to his friends.
The
th part of c toffees is,

The total number of distributed toffees is 21.

It is the same as given equation.
If we change the equation in words it means the
th part of a number c is 21.
In this case, Maria is rent a kayaks that charge a $10 upfront fee, with an hourly rate of $7.50. Then the equation of the price should look like this: f(x)= 10+7.5x
If Maria has a total money of 70$, then the duration of rent should be:
f(x)= 10+7.5x
70= 10+ 7.5x
7.5x= 70-10
x= 60/7.5= 8 hours