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In-s [12.5K]
2 years ago
10

Need to know if these are correct, and if not what are the correct ones?

Mathematics
1 answer:
Tems11 [23]2 years ago
4 0
(3) The correct answer for the question that is being presented above is this one: "Third choice."
item 1 = 1 + 4 + 9 = 14
item 2 = 1 + 8 = 9
item 3 = 2 + 3 + 4 + 5 = 14
item 4 = 6 + 8 = 14

(4) The correct answer for the question that is being presented above is this one: "Second choice."
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Solve for x: 2x-5=49
elena-s [515]

2x-5=49

move -5 to the other side

sign changes from -5 to +5

2x-5+5= 49+5

2x=49+5

2x= 54

divide both sides by 2 to get x by itself

2x/2= 54/2

cross out 2 and 2, divide by 2 and then becomes 1*1*x=x

54/2= x

Answer:

x= 27

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What is pie equal to?
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Π = 3.14
π = 3.141592653589793
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Jack earns $300 per week selling cars. He makes an additional 2% commission on all of his sales. Last week he sold $53, 850 wort
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3 years ago
A pile of 15 boxes is 3 metres high. What is the depth of each box?
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3 years ago
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Can someone please help me with these math problems ASAP?!<br> Thanks in advance! ;)
Mamont248 [21]

Answer:

11) Here given Function,

f(x) = \sqrt{2x-11}

And, g(x) = -|0.1|x+5

For f(x) = g(x)

\sqrt{2x-11}=-|0.1|x+5

2x-11=(-|0.1|x+5)^2

2x-11=0.01x^2 - 10|0.1|x+25

2x=0.01x^2 - 10|0.1|x+25+11

2x=0.01x^2 - 10|0.1|x+36

0.01x^2 - 10|0.1|x - 2x+36=0

When we solve this equation,

We found,

 x = 12.5227 ≈ 12.53

Thus, the required solution is, x = 12.53

12) Here the height of rocket A in x second,

f(x) = -16x^2+74x+9

And, The height gain by the rocket B in x seconds,

g(x) = -16x^2+82x

If at x seconds both A and B gain the same height,

That is, f(x) = g(x)

⇒ -16x^2+74x+9= -16x^2+82x

⇒74x + 9 = 82x

⇒ 82x - 74x = 9

⇒ 8x = 9

⇒ x = 1.125 ≈ 1.13

Thus, the required solution is x = 1.13 seconds (approx)


4 0
3 years ago
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