3 years ago

What is a simpler form of the following expressions?

Mathematics

1 answer:

nadezda [96]3 years ago

6 0

Answer:

D. 49p² - 64

Step-by-step explanation:

(7p - 8)(7p + 8)

Solving this requires the 'difference of squares' concept which states;

If (a - b)(a + b)

Then the solution must be a² - b²

Considering (7p - 8)(7p + 8) then the answer is;

(7p)² - 8² = 49p² - 64

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(2.3×10^4)×(1.5×10^-2)

Wewaii [24]

Answer:

3450

Step-by-step explanation:

(2.3x10^4)x(1.5x10^-2)

(2.3x10,000)x(1.5x.1)

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3450

6 0

2 years ago

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A jar of natural peanut butter normally cost four dollars today it's on sale for $3.60 what is the percentage of the discount

kakasveta [241]

$4 is the original price of the jar consisting of peanut butter so therefor it = 100%. It's for sale at $3.60, so we divide $4 by 100% so we get the percentage for each cent and then we times it by 3.60 to get the percentage for $3.60 which is 90%. Now we subtract 90% from 100% to get the discounted percentage for 40cents :)