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Lelechka [254]
3 years ago
9

Please help I will mark u as the brainliest #emergency

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
5 0

Answer:

23x2+8xy−57y2

Step-by-step explanation:

(5x)(5x)+(5x)(7y)+(−7y)(5x)+(−7y)(7y)+−2x2+8xy+−8y2

=25x2+35xy+−35xy+−49y2+−2x2+8xy+−8y2

Combine Like Terms:

=25x2+35xy+−35xy+−49y2+−2x2+8xy+−8y2

=(25x2+−2x2)+(35xy+−35xy+8xy)+(−49y2+−8y2)

=23x2+8xy+−57y2

Plz mark brainlest :)

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From the identity:

sec(x)= \frac{1}{cos(x)}


f(x)=sec(x)= \frac{1}{cos(x)}

the inverse of f is g such that f(g(x))=x,

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4 years ago
What is the percent change of 36;63
STatiana [176]
First, find the difference.
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Then, divide by the original number.
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3 years ago
Find the taxable income of a married couple with two children, who have a combined income of $75,000.
Dima020 [189]

Answer:

$47,200

Step-by-step explanation:

Given :

The total income of a married couple =  $75,000.

Number of children = 2

Therefore to find the taxable income of  a U.S.  family is given by the following formula ---

taxable income = total income- exemption deduction - standard deduction

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Thus in order to find the taxable income of the couple, use the formula

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Thus the taxable income is $47,200.

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4 years ago
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3 years ago
Geometry
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