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icang [17]
3 years ago
6

(x - 2)² + 6x – 7 Which of the following is equivalent to

Mathematics
1 answer:
podryga [215]3 years ago
6 0

Answer:

x^2 +2x-3

Step-by-step explanation:

Given

(x - 2)\² + 6x - 7

Required

The equivalent

We have:

(x - 2)\² + 6x - 7

Expand

(x - 2)\² + 6x - 7 = x^2 -2x-2x +4 +6x - 7

Collect like terms

(x - 2)\² + 6x - 7 = x^2 -2x-2x+6x +4  - 7

(x - 2)\² + 6x - 7 = x^2 +2x-3

Hence, the equivalent is:

x^2 +2x-3

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Write the first four terms of the sequence defined by each of the following recursive formulas.
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Answer:

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Step-by-step explanation:

What the first equation is basically saying is subtract 3 each time.

What the second equation is basically saying is add 0.5 each time.

Then we just add/subtract to find the first four terms.

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Peter is trying to set a new record for pizza deliveries. His previous record is 20 pizzas in one hour. He has already delivered
Arlecino [84]
We know that
<span>Peter has already delivered </span><span> 2 pizzas in 5 minutes
so
1 hour-------> 60 minutes
</span><span>time left------> 60 minutes - 5 minutes--------> 55 minutes 

</span>pizzas to deliver to beat his previous record----------> 20-2------> 18 pizzas

therefore
in the next 55 minutes

if the

<span>average per minute = (18/55) pizzas /minute
</span>Pete beat his previous record
<span>
 </span>average per minute  > (18/55) pizzas /minute
Pete overcome the previous record

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together Charlotte and vinny have 20 marbles. charlotte has 4 times as many as vinny. how many marbles does Charlotte have.
nadya68 [22]

Answer:

5

Step-by-step explanation:

20 divided by 4 is 5

5 0
3 years ago
a rectangular pool is 20 ft wide and 50 ft long. the deck is the same width all the way around the pool. the total area of the d
Alex
First, we need to get the total area of the rectangular pool.
Area = l * w
Area = 20 ft * 50 ft
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Then the deck is 456 ft^2 with the width of 20ft, the same as the rectangular pool.

Area = l * w
456 = l * 20
l = 456 / 20
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So the walkway is 22.8ft wide.
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3 years ago
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