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Zarrin [17]
3 years ago
11

Complete the square to form a perfect-square trinomial x^2-4x+

Mathematics
1 answer:
nadya68 [22]3 years ago
8 0
x^2-4x=x^2-4x+(4-4)\\=(x^2-4x+4)-4\\=(x-2)^2-4

We are done 
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A store sells four-packs of permanent markers in assorted colors for $3.19 per pack. All spiral-bound notebooks, whether wide-ru
Gekata [30.6K]

Answer: (x3.19+y1.20 + z1.20) x 1.06

Step-by-step explanation:

Hi, to answer this question we have to write an expression.

Four-packs of permanent markers in assorted colors for $3.19 per pack.

3.19 x (x number of packs purchased)

spiral-bound notebooks, whether wide-ruled or college-ruled, sell for $1.20 each

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The store charges a 6% sales tax on Cleo’s total bill, so we have to multiply the expression by 1+ 0.06 ( 1+ tax percentage in decimal form)

(x3.19+y1.20 + z1.20) x 1.06

8 0
3 years ago
Mr. Fishie bought a tank for $15 and 10 fish which cost $f each. If he gave the cashier two 20-dollar bills, what was his change
Gnesinka [82]

Answer:

$25 - $10f

Step-by-step explanation:

Fishie's name is fishy.  

We know Mr. Fishie spent $15 on a tank.  His 10 fish cost 10*$f.  His total is:

Total =15 + 10*f

His change after 2 $20 would be:

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$25 - $10f

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2 years ago
Find the number between 30 and 70 that is divisible by 8, and when divided by 5 has a remainder of 1
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hope this helps
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So can someone show there work in this one?
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