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3 years ago

11

Sarah is playing a video game that allows her to double her coins each hour. The game starts with 4 coins and Sarah plays the ga

me for 2 hours. How many coins will she have at the end of the two hours.

1 answer:

Snezhnost [94]3 years ago

4 0

Answer:

16 coins

Step-by-step explanation:

At first: 4 coins

First hour: 4 x 2 = 8

Second hour: 8 x 2 = 16

Total coins: 16 coins

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What is the algebraic rule for a figure that is rotated 270° counterclockwise about the origin?

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Step-by-step explanation:

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Wen takes a job with a starting salary of $100,000 for the first year. she earns a 3% increase each year. what does s5 represent

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$S_{n} = \frac{ a_{1}(1- r^{n}) }{1-r}$ $a_{1} = 100000, r=1.03, n=5$
$S_{5} = \frac{100000(1- 1.03^{5}) }{1-1.03} = \frac{100000(-.159)}{-.03} =530,000$

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4 years ago

Read 2 more answers

What are the leading coefficient, constant term and degree, if any, of the algebraic expression

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3 years ago

Convert to the product of multiplication<br>a^2-b^2-4b-4

kirill [66]

$a^2-b^2-4b-4$ in form of multiplication is $(a-b)(a+b)-4(b+1)$ .

<u>Step-by-step explanation:</u>

We know that factors are the numbers that are being multiplied together . As 6532*7 = 45724 .Here 6532 & 7 are the factors and 45724 is product of the factors .

Here , we need to convert to the product of multiplication

a^2-b^2-4b-4 or , $a^2-b^2-4b-4$ :

⇒ $a^2-b^2-4b-4$

We know by identity that , $p^2-q^2 = (p-q)(p+q)$

⇒ $(a-b)(a+b)-4b-4$

Taking common term out as -4 :

⇒ $(a-b)(a+b)-4(b+1)$

Therefore , $a^2-b^2-4b-4$ in form of multiplication is $(a-b)(a+b)-4(b+1)$ .

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3 years ago

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Answer:

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