Answer: In a square or other rectangle, all pairs of adjacent sides are perpendicular. A right trapezoid is a trapezoid that has two pairs of adjacent sides that are perpendicular.
Step-by-step explanation:
Answer:
The volume of the crystal is .
Step-by-step explanation:
The volume enclosed by a cube is the number of cubic units that will exactly fill a cube.
To find the volume of a cube recall that a cube has all edges the same length. The volume of a cube is found by multiplying the length of any edge by itself three times. Or as a formula
where:
<em>s</em> is the length of any edge of the cube.
From the information given we know that the crystal has edge lengths of 5 centimeters. Therefore, the volume of the crystal is
.
Answer:hope this wil help you
Step-by-step explanation:
I am tired anyway now haaa.
Answer:
Step-by-step explanation:
On day one = few pages (x)
On day two = twice of pages read on day one (2x)
On day three= 6 less than the page read the first day (x-6)
Total pages read = x+2x+(x-6)=458
4x-6=458
4x=458+6=464
x= 464÷4
x=116
Pages read on day three was 110
<h2>
Key Concepts</h2>
- Algebraic equations from word problems
- Systems of equations
<h2>Solving the Question</h2>
We're given:
- There were 478 people in total.
- $1.75 per child
- $2.25 per adult
- Total revenue of $975
- We must find the number of children and adults who swam.
<h3>
Set variables:</h3>
Let <em>a</em> represent the number of children who swam.
Let <em>b</em> represent the number of adults who swam.
<h3>
Create equations</h3>
Because we've set two variables, we need two equations to be able to find the answers.
One of the equations will regard price while the other will regard the number of people, as those are the two things given in the question.
Number of people:
- The number of children + the number of adults = 478 in total
Price:
- $1.75 per child + $2.25 per child = $975 in total
<h3>Solve equations</h3>
We can solve this question using <em>substitution</em>, where we plug one equation into the other.
Isolate <em>a</em> in the first equation:
Plug the first equation into the second equation by replacing <em>a</em>:
Solve for <em>b</em>:
⇒ Open up the parentheses:
⇒ Subtract 836.5 from both sides to isolate <em>b</em>:
⇒ Divide both sides by -0.5:
- Therefore, there were 277 adults in total.
Solve for <em>a</em>:
⇒ Replace <em>b</em> with 277:
- Therefore, there were 201 children in total.
<h2>Answer</h2>
There were 201 children and 277 children at the pool that day.