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max2010maxim [7]

3 years ago

6

had already graded 40 papers and he still needed to grade more. Write an equation for how many papers he is grading if he contin

ues to grade 4 papers a minute

1 answer:

OLga [1]3 years ago

6 0

Y = 40 + 4m
m = minutes
y = total papers graded

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Misha Larkins [42]

Answer:

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Answer:

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Step-by-step explanation:

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Use FOIL to explain how to find the product of (a + b)(a − b). Then describe a shortcut that you could use to get this product w

xenn [34]

Answer:

The product of (a+b)(a-b) is $a^2 - b^2$

Step-by-step explanation:

Use FOIL to explain how to find the product of (a + b)(a − b)

FOIL is

Multiply First terms : a*a = a^2

Multiply Outside terms : a* -b = -ab

Multiply Inner terms : b * a= ab

Multiply last terms : b * -b = -b^2

now we combine all the terms

$a^2 -ab+ab - b^2$

combine like terms

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Shortcut is we apply an identity

$a^2 - b^2 = (a+b)(a-b)$

8 0

3 years ago

Read 2 more answers