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r-ruslan [8.4K]

3 years ago

13

Craig like to collect records last year he had 12 records in his collection now he has 15 records what is the percent increase o

f his collection

2 answers:

Sergio039 [100]3 years ago

7 0

It should be a 20% increase

erastovalidia [21]3 years ago

3 0

25% increase 1/4 of 12 1/4 is equal to 25%

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The wildflowers at a national park have been decreasing in numbers. There were 1200 wildflowers in the first year that the park

Andreas93 [3]

Answer:

Step-by-step explanation:

We have total 1200 wildflowers in first year that is first term a is 1200

We have to find sigma notation showing the infinite growth of the wildflowers.

$wildflowers=\sum_{i=1}^{\infty }1200(\frac{1}{4})^{i-1}$

Formula for infinite sum of GP is $S_{\infty}=\frac{a}{1-r}$

Here, $a=1200,r=\frac{1}{4}$

On substituting the values in the formula of sum we get:

$S_{\infty}=\frac{1200}{1-\frac{1}{4}}$

On simplification we get:

$S_{\infty}=\frac{1200}{\frac{3}{4}}=1600$

Therefore, total sum of wildflowers 1600.

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dezoksy [38]

3x-13=305

3x=305+13

3x=318

(3x)÷3=318÷3

x=106

check.. (3×106)-13=305

318-13=305

305=305

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250 divided by 10 squared equals?

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250 divided by 10 squared is 2.5

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