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Daniel [21]
2 years ago
15

What is the simplified form of 3.1 - 5.8n - 4n + 8?

Mathematics
2 answers:
lana66690 [7]2 years ago
8 0

Answer:

-9.8n + 11.1

Step-by-step explanation:

1. Combine like terms

      -5.8n - 4n = -9.8n

      3.1 + 8 = 11.1

2. -9.8n +11.1

Eddi Din [679]2 years ago
3 0

Answer:

-9.8n+11.1

Step-by-step explanation:

You have to add all like terms. That means that -5.8n and -4n have to be added together along with 3.1 and 8. That gets you -9.8n+11.1.

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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
A total of 243 adults and children are at a movie theater. There are 109 more adults than children in the theater. If eh represe
Marina86 [1]
The system should look like this:

eh + b = 243
eh - b = 109
6 0
3 years ago
Solve. <br> 24= 7/8g<br> A. 3/7<br> B. 21<br> C. 23 1/8<br> D. 27 3/7
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I hope this helps you

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2 years ago
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Ryann planned on swimming 14 miles. Instead, he was only able to swim 1/4 of that distance. How many miles did Ryan swim?
mote1985 [20]

Hey there,

Given the question it shows that Ryann swam 1/4 of 14 miles that he was supposed to swim.

In words of is another way to say 1/4 * 14...

  • 14/4

This expressed as a mixed number would be...

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Of the 14 miles that Ryann was supposed to swim he swam 3 1/2 miles.

Hope I helped,

Amna

8 0
2 years ago
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What does equivalent ratios mean
Anna35 [415]

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