Answer:
<em>Answer to part A:</em>
1 notebook = $2.5
1 pen = $1.5
<em>Answer to part B:</em>
= 3 pens.
Step-by-step explanation:
- <em>Here's the simultaneous equation.</em>
4n + 3p = $14.50
5n + 6p = $21.50
- <em>Multiply the numerator by the denominators first number and vice-versa.</em>
5(4n + 3p) = $14.50
4(5n + 6p) =$ 21.50
- <em>Here's what you should get.</em>
20n + 15p = $72.50
20n + 24p = $86
- <em>Eliminate the like numbers by subtracting the denominator from the numerator.</em>
20n - 20n = 0
15p - 24p = -9p
$72.50 - $86 = -$13.5
- <em>Divide the result after the equal sign by the result before the equal sign.</em>
-$13.5 ÷ -9 = $1.5p
- <em>Since we've found the cost of one pen as $1.5, lets substitute any of the first equations to get the cost of one notebook.</em>
4n + 3p = $14.50
4n + 3($1.5) = $14.50
4n + $4.5 = $14.50
4n = $14.50 - $4.5
4n = $10.00
n = $2.5
- <em>Here's the answer to part A:</em>
1 notebook = $2.5
1 pen = $1.5
- <em>Part B::::::::::::::::::</em>
1 ($1.5) = 3($2.5)
$1.5 + $7.5 = $9.0
$27 ÷ 9 = $3
- <em>Therefore, she'll buy each supply thrice:</em>
3 ( $1.5 + $7.5 ) = 3 ( $9.0 )
( $4.5 + $22.5 ) = ( $27 )
$4.5 + $22.5 = $27
- <em>Answer to part B:</em>
= 3 pens.
<em />
<em />
<em />
Answer:
(A)
Step-by-step explanation:
To be honest, since all of them are different, as long as you get the first one right, you will get the others right. A is your answer, for the following reasons:
Reflexive Property: The Reflexive property states that the mirrored version of itself will always be congruent with itself. Generally, to make it easier, they will write it opposite (as they did in the given proof):
<em>line</em> AC ≅ <em>line</em> CA
~
Answer:
A’B’C’
Step-by-step explanation:
Well if triangle ABC is rotated 90 degrees clockwise around the origin it will turn right to create triangle A’B’C’.
It’s 25 bc every 2 it goes up 5 dollars
