That represents an easy direct division, we divide:
$22.85 / 17 boxes = 22.85/17
= 1.34 dollars per box of crayon
that is the cost
we know XYZ is an isosceles, thus XY = YZ, the perpendicular segment bisectors of QR and QS are also equal to each other in length, because they both are segment bisectors and thus YR=RX=YS=SZ, so any perpendicular line stemming from the same length on each side will meet its counterpart right on the middle of the triangle.
![\bf \stackrel{QR}{\cfrac{x}{2}+2}~~=~~\stackrel{QS}{x - 10}\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{2}}{2\left( \cfrac{x}{2}+2 \right)=2(x-10)}\implies x+4=2x-20 \\\\\\ 4=x-20\implies 24=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{QR}{\cfrac{24}{2}+2}\implies 12+2\implies 14](https://tex.z-dn.net/?f=%5Cbf%20%5Cstackrel%7BQR%7D%7B%5Ccfrac%7Bx%7D%7B2%7D%2B2%7D~~%3D~~%5Cstackrel%7BQS%7D%7Bx%20-%2010%7D%5Cimplies%20%5Cstackrel%7B%5Ctextit%7Bmultiplying%20both%20sides%20by%20%7D%5Cstackrel%7BLCD%7D%7B2%7D%7D%7B2%5Cleft%28%20%5Ccfrac%7Bx%7D%7B2%7D%2B2%20%5Cright%29%3D2%28x-10%29%7D%5Cimplies%20x%2B4%3D2x-20%20%5C%5C%5C%5C%5C%5C%204%3Dx-20%5Cimplies%2024%3Dx%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill%5C%5C%5C%5C%20%5Cstackrel%7BQR%7D%7B%5Ccfrac%7B24%7D%7B2%7D%2B2%7D%5Cimplies%2012%2B2%5Cimplies%2014)
Answer:
20. -2n-1
21. 4d-2
22. 14x+4
23. 4d+2
24. -6r-5
Step-by-step explanation:
You can use the distributive property of multiplication over addition to find the equivalent expression to the given expression.
The expression which is equivalent to the given expression is given by
Option D: 
<h3>What are equivalent expressions?</h3>
Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.
<h3>What is distributive property of multiplication over addition?</h3>
Suppose a, b and c are three numbers. Then we have:

(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)
<h3>Using the above property and the fact that 28 and 35 are multiples of 7 to get the equivalent expression</h3>
The given expression is 
Since 28 = 7 times 4 and 35 = 7 times 5
Thus,

Thus,
The expression which is equivalent to the given expression is given by
Option D: 
Learn more about equivalent expressions here:
brainly.com/question/10628562
Answer:
9.37 divide by two = 4.685
4.685 in 2DP = 4.68
Step-by-step explanation:
i hoped this helps.