3 years ago

Multiply (x - 5)(3x + 6) Express the answer in standard form

Mathematics

1 answer:

levacccp [35]3 years ago

7 0

$3 { x}^{2} - 9x - 30$
Work in image above.

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Troyanec [42]

Pythagorean theorem is $a^{2} + b^{2} = c^{2}$
and using that sin is opposite/hypotenuse, you can find the third side of the triangle.
$11^{2}+(adjacent)^{2} = 61^{2} \\ 121+ (adjacent)^{2} = 3721 \\ (adjacent)^{2}=3600 \\ adjacent = 60$
now you know adjacent is 60, so cos=60/61

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3 years ago

Yesterday, sam had 146 baseball cards. today, he gave d away. Using d, write an expression for the number of cards same has left

Korvikt [17]

146-d=x is the answer

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3 years ago

Last month Marcus borrowed $74 from his roommate so far he has paid him back $33 which equation could be used to find X the amou

weeeeeb [17]

Answer:

Step-by-step explanation:

since he has already paid 33 then you will have to add the x amount still need to be paid