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Kitty [74]
2 years ago
8

Please help me I will give you extra points and the brain thing

Mathematics
1 answer:
vovangra [49]2 years ago
4 0

Answer:

A. n = 5

Step-by-step explanation:

S = n² + n

When S = 30:

                                                       n² + n = 30

Subtract 30 from both sides:  n² + n - 30 = 0

Factorize:                               (n - 5)(n + 6) = 0

Therefore                                                 n = 5 or -6

As n > 2, then n = 5 only

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Anthony invested $36,000 in an account paying an interest rate of 5.3% compounded
Westkost [7]

Answer:

3.8 months

Step-by-step explanation:

Question: Anthony invested $36,000 in an account paying an interest rate of 5.3% compounded

quarterly. Assuming no deposits or withdrawals are made, how long would it take, to

the nearest year, for the value of the account to reach $51,800?

First step! What is 5.3% of 36k?

1,908

Second Step! Divide

51,800/1,908= 27.1488469602

Third Step! Round

27.1488469602= 27.1

27.1 weeks.

7 weeks in a month.

12 months in a year.

27.1/7= 3.8

3.8 months

5 0
3 years ago
Read 2 more answers
What pair can be matched with 0.75
WITCHER [35]

Answer:

75/100 or 3/4


Step-by-step explanation:


7 0
3 years ago
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Center=(-2,3) and radius=4. Write the equation of the circle
lord [1]
Equation of a circle = (y-k)^2 + (x-h)^2 = r^2, where the center is at (h, k) and r = radius
{(y - 3)}^{2}  +  {(x + 2)}^{2} = 16
5 0
3 years ago
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Write the expression as a single natural logarithm. 3 In m + 4 Inn​
skad [1K]

Answer:

ln( {m}^{3}  {n}^{4} )

Step-by-step explanation:

\alpha ln(x)  =  ln( {x}^{ \alpha } )

ln( {m}^{3} )  +  ln( {n}^{4} )

ln(a)  +  ln(b)  =  ln(ab)

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8 0
2 years ago
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62 degrees<br> 116 degrees<br> 25 degrees<br> 54 degrees
katrin2010 [14]
  • <em>Answer:</em>

<em>x = 25°</em>

  • <em>Step-by-step explanation:</em>

<em>Hi ! </em>

<em>We know  : </em><em><u> the sum of the measures of any triangle is 180 degrees</u></em><em>.</em>

<em>A + B + C = 180°</em>

<em>(3x - 13) + (2x + 4) + (180 - 116) = 180</em>

<em>5x - 13 + 4 + 64 = 180</em>

<em>5x = 180 - 64 - 4 + 13</em>

<em>5x = 125</em>

<em>x = 125 : 5</em>

<em>x = 25°</em>

<em>Good luck !</em>

8 0
3 years ago
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