To solve this problem, we must remember that the distributive property allows us to get rid of parentheses by multiplying the coefficient by each of the terms in parentheses. In this case, our coefficient is 3, because that is the number of dollars Ann and Joe's father will donate per lap. This means that we must multiply this by the total number of laps that they swam, which can be found by adding together their individual number of laps, 21 + 15.
This makes our expression: 3(21 + 15)
Using the distributive property, we can multiply both numbers in the parentheses by 3 to simplify our expression, as shown below:
3(21) + 3(15)
Now, we must multiply these numbers together to simplify.
63 + 45
When we add these two numbers together, we get 108.
Therefore, your final answer is that their father donated $108.
Hope this helps!
Step-by-step explanation:
3 tickets = $16.50
1 tickets = $16.50/3
= $5.5
2 tickets = $2×5.5
= $11.00
Answer: F, D, B
Step-by-step explanation:
The system of equations have no solution.
Explanation:
The equations are 
and 
To find the two numbers, let us solve the equations using substitution method.
From the equation , let us determine the value of r,
Let us substitute the value of r in , we get,
which is not possible.
This means that the system has no solution.
According to "Black Hole Beginnings," the destruction of some stars results in an an intense gravitational pull.
To answer the question, we need to know what Black Holes are.
<h3>What are Black Holes?</h3>
Blackholes are regions of space in which no matter can escape
<h3>Characteristics of black holes</h3>
- Black holes are formed from the remnants of large star that dies in a supernova
- As long as the star is three times or more larger than the sun, it will collapse
- The gravitational force on the star causes it to collapse into a black hole
So, when black holes are formed, some stars are destroyed and collapse due to intense gravitational forces.
So, according to "Black Hole Beginnings," the destruction of some stars results in an an intense gravitational pull.
Learn more about black holes here:
brainly.com/question/6037502
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