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Reika [66]
2 years ago
7

A number is increased by 30, and the

Mathematics
2 answers:
SIZIF [17.4K]2 years ago
5 0

Answer:

The number is 17

Step-by-step explanation:

Let the number be n.  Increasing this by 30 results in n + 30.  Tripling this result results in 3(n + 30) = 141.

Multiplying as indicated:  3n + 90 = 141, or

                                            3n = 51

Solving for n, we get n = 51/3 = 17

Novosadov [1.4K]2 years ago
4 0

Answer:

The original number is 17.

Step-by-step explanation:

3(x+30)=141\\\\\frac{3(x+30)}{3}=\frac{141}{3}\\\\x+30=47\\\\x+30-30=47-30\\\\x=17

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y = 3x

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The office manager of First Tech Support borrowed $25,000 to purchase new computers for employees. The bank charges 6 percent in
Travka [436]

Given:

Amount borrowed (P)= $25000

Rate of interest (r)= 6%

Time (t)= 4 years.

To find:

The total interest the company pay in all.

Solution:

We know that,

A=P(1+r)^t

where, A is amount, P is principal, r is rate of interest and t is time period.

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7 0
3 years ago
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7 0
3 years ago
For what values of x does the graph of f have a horizontal tangent? (Use n as your integer variable. Enter your answers as a com
BartSMP [9]
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To find for what values of x graph has tangents we need to differentiate function f(x).
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1-2cosx = 0
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