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Morgarella [4.7K]
4 years ago
5

How many solutions does this system have? 2x+8y=16,-3x+6y=30

Mathematics
2 answers:
Semmy [17]4 years ago
8 0
I had 16 answers solutions
Free_Kalibri [48]4 years ago
3 0

It has many solutions (16)

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Parallel perpendicular or neither<br> Y=3x-7<br> Y=3x+1
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Parallel. The two equations have the same slope, 3, which makes them parallel. 
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1. Explain the difference between rate and unit rate using their definitions.
Lostsunrise [7]
A rate is a non simplified ratio so a rate could be

4:2=rate
the UNIT rate=the simplest for or 2:1

so exg
300 jumps in 3 days=rate
100 jumps per day=unit rate
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Mr. Johnson sells erasers for $3 each. He sold 96 erasers last week and he sold 204 erasers this week. About how much more money
notka56 [123]
Last week: 96x3=288
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3 years ago
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Rationalise the denominator of: (√3 + √2)/(√3-√2) = ?<br>​
krok68 [10]

Step-by-step explanation:

<h3><u>Given</u><u>:</u><u>-</u></h3>

(√3+√2)/(√3-√2)

<h3><u>To </u><u>find</u><u>:</u><u>-</u></h3>

<u>Rationalised</u><u> form</u><u> </u><u>=</u><u> </u><u>?</u>

<h3><u>Solution</u><u>:</u><u>-</u></h3>

We have,

(√3+√2)/(√3-√2)

The denominator = √3-√2

The Rationalising factor of √3-√2 is √3+√2

On Rationalising the denominator then

=>[(√3+√2)/(√3-√2)]×[(√3+√2)/(√3+√2)]

=>[(√3+√2)(√3+√2)]×[(√3-√2)(√3+√2)]

=>(√3+√2)²/[(√3-√2)(√3+√2)]

=> (√3+√2)²/[(√3)²-(√2)²]

Since (a+b)(a-b) = a²-b²

Where , a = √3 and b = √2

=> (√3+√2)²/(3-2)

=> (√3-√2)²/1

=> (√3+√2)²

=> (√3)²+2(√3)(√2)+(√2)²

Since , (a+b)² = a²+2ab+b²

Where , a = √3 and b = √2

=> 3+2√6+2

=> 5+2√6

<h3><u>Answer:-</u></h3>

The rationalised form of (√3+√2)/(√3-√2) is 3+2√6+2.

<h3><u>Used formulae:-</u></h3>

→ (a+b)² = a²+2ab+b²

→ (a-b)² = a²-2ab+b²

→ (a+b)(a-b) = a²-b²

→ The Rationalising factor of √a-√b is √a+√b

8 0
3 years ago
The measure of an exterior angle of a triangle is always_____.
Blababa [14]

Answer:

The measure of an exterior angle of a triangle is always greater than the measure of either of the opposite interior angles of the triangle

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2 years ago
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