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Flura [38]
3 years ago
15

6x+y=15 -7x-2y=-10 using substitution

Mathematics
1 answer:
MAVERICK [17]3 years ago
5 0
The answer is (8, -33)
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At the Science Museum, there is an exhibition with 150 displays about energy.
tatuchka [14]
<span>1/5
       
This is a matter of elimination. So let's figure out how many of each display there is. 30% of 150 = 0.30 * 150 = 45 displays about electricity. 2/5 * 150 = 0.40 * 150 = 60 displays about renewable energy 1/10 * 150 = 150/10 = 15 displays about gas. The rest of the displays are about nuclear power. So 150 - 45 - 60 - 15 = 30 displays about nuclear power. Since we want a fraction, we get 30/150 But 30/150 isn't in it's simplest form. The largest number that will evenly divide both 30 and 150 is 30. So divide both the numerator and denominator by 30 (30/30)/(150/30) = 1/5 So 1/5 of the displays are about nuclear power.</span>
8 0
3 years ago
Find the 9th term of the geometric sequence 6, 24, 96,...
joja [24]

Answer:

1572864 or 393216 i lost count

Step-by-step explanation:

you multiply by 4

6 0
3 years ago
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densk [106]

Answer:

2950

Step-by-step explanation:

3 0
3 years ago
100 POINTS!!<br> What is the value of x? Enter your answer in the box.
MakcuM [25]
The answer should be 46
4 0
3 years ago
Four times the sum of half a number and 6 is 48
katrin [286]

Answer:

<h3>The number is 12</h3>

Step-by-step explanation:

Let the number be x

Half a number is written as 1/2x

So we have

Four times the sum of half a number and 6 is 48 is written as

4( \frac{1}{2} x + 6) = 48 \\ 2x + 24 = 48 \\ 2x = 48 - 24 \\ 2x = 24

Divide both sides by 2

That's

\frac{2x}{2}  =  \frac{24}{2}

We have the final answer as

<h3>x = 12</h3>

Hope this helps you

6 0
3 years ago
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