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never [62]
3 years ago
5

Please help i have a headache and have been dong this for 2 hours straight please!!

Mathematics
1 answer:
UNO [17]3 years ago
8 0

Answer:

\$843.67

Step-by-step explanation:

Let's break the price changes down:

Initial price: $896

On sale for 12%, meaning the computer will be 100-12=88% of the original price:

New sale price \implies896\cdot 0.88=\$788.48

Now a 7% tax is added to this, meaning the final price will be 107% of this new sale price.

Final price \implies 788.48\cdot 1.07\approx \boxed{\$843.67}

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4 years ago
A maple tree is 16 yards tall and its shadow is 12 yards long. A nearby observation tower is 12 yards tall. How long is the obse
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Answer: 9 yards

Step-by-step explanation:

Given

The maple tree is 16 yards tall and its shadow is 12 yards tall

Suppose the angle made by the maple tree is x

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Suppose the length of the shadow is y

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Substitute the value of \cos x

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4 years ago
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3 years ago
The triangles are similar. What is "a" equal to? What is "b" equal to?
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3 years ago
Read 2 more answers
Simplify. final answer should be written in standard form (a+b)(3a-b)(2a+7b)
algol13

we have

(a+b)(3a-b)(2a+7b)

step 1

Solve

apply distributive property

(a+b)(3a-b)=3a^2-ab-3ab-b^2=3a^2-4ab-b^2

step 2

Multiply (3a^2-4ab-b^2) by (2a+7b)

6a^3+21a^2b-8a^2b-28ab^2-2ab^2-7b^3=6a^3+13a^2b-30ab^2-7b^3

answer is

<h2>6a^3+13a^2b-30ab^2-7b^3</h2>
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1 year ago
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