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torisob [31]
2 years ago
13

I subtract 3 from a certain number, multiply the result by 5 and then add 9

Mathematics
2 answers:
viktelen [127]2 years ago
4 0

Answer:

<h2><u><em>5x - 6</em></u></h2>

Step-by-step explanation:

I subtract 3 from a certain number, multiply the result by 5 and then add 9

Remember PEMDAS

(x - 3) * 5 + 9 =

5x - 15 + 9 =

<u><em>5x - 6</em></u>

mr_godi [17]2 years ago
3 0

Answer:

  • The number is 5x-6

Step-by-step explanation:

Let the number be x.

Then,

Subtracting 3,

  • x - 3

Multiplying by 5,

  • (x-3)5
  • 5(x-3)

Adding 9:

  • 5(x-3)+9

Solving Further:

  • 5x-15+9
  • 5x-6
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When a force of 30 N acts on a certain object the acceleration of the object is 5m/s2 if the force is changed to 54 N what will
PtichkaEL [24]

Answer:

The correct answer is 9 m per second^{2}

Step-by-step explanation:

Force is defined by mass of an object times it's acceleration.

Let the mass of the object be m kilograms.

When a force of 30 N acts on a certain object the acceleration of the object is 5 m per second^{2}

∴ 30 = m × 5

⇒ m = 6.

If the force is changed to 54 N, let the acceleration of the object be x  m per second^{2}.

∴ 54 = m × x

⇒ x = \frac{54}{6} = 9

Thus when the force is 54 N, the acceleration of the object is 9 m per second^{2}.

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3 years ago
What happens to the value of the expression 80-2r as r decreases?
Ghella [55]

Answer:The value of the expression increases as r decreases.

Step-by-step explanation:

To find : What happens to the value of the expression as r decreases?

Given Expression: 80-2r

We check for different value of r as decreasing order,

r        80-2r

5        80-10=70

4        80-8=72

3        80-6=74

2        80-4=76

1         80-2=78

As r decreases the value of expression increases.

Therefore, the value of the expression increases as r decreases.

Hope this helps!

8 0
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P(-2)=-3+4x please help​
Jobisdone [24]

Answer:

first off, this may be completely wrong, but I did try my best. You need to clarify what this is for so I went with the easiest route, solving for variables.

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Step-by-step explanation:

P(-2)=-3+4x

Solving for X

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-2(0)=-3+4x

-3=4x

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2 years ago
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sergeinik [125]
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46+30
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hope this helps
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