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3 years ago

18 PLS ILL MAKE U BRAINLYIST

Mathematics

1 answer:

Yuliya22 [10]3 years ago

7 0

Answer:

#19: x=3

#20: would be n=4 i think

Step-by-step explanation:

#19- there are 4 x's and 12 +1's so 4 into 12 is 3.

#20- well the answer that i got was 5 but 4 was closer to 5 so yea.

i sure hope this helps!

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An investor has an account with stock from two different companies. Last year, her stock in Company A was worth $6750 and her st

pantera1 [17]

Answer:

3.5%

Step-by-step explanation:

1. calculate starting total

$6750 + 4210=10960$

starting amount = $10,960

2. calculate stock A2's value

decreased by 18%

to make the percentage usable in this equation we need to divide it by 100 to get it in decimal form. ⇒ $\frac{18}{100} = 0.18$

multiply stock A1 by perctage decimal to get the amount decreased

$6750(0.18)=1215$ ($1,215)

subtract stock A1 by decreased amount to get stock A2's value

$6750-1215=5535$

A2 = $5,535

3. calculate stock B2's value

increased by 20%

to make the percentage usable in this equation we need to divide it by 100 to get it in decimal form. ⇒ $\frac{20}{100} = 0.20$

multiply stock B1 by perctage decimal to get the amount increased

$4210(0.20)=842$ ($842)

add stock B1 with increased amount to get stock B2's value

$4210+842=5052$

B2 = $5,052

4. get new amount of account

$5052+5535=10587$

new amount = $10,587

5. find percentage decrease of starting amount to new amount

divide starting amount by the new amount

$\frac{10960}{10587} = 1.03523188816$

then subtract by 1

$1.03523188816-1 =0.03523188816$

multiply by 100 to convert to percentage form

$0.03523188816(100) =3.523188816$

and round to <u>nearest tenth</u>

answer is ≈ 3.5%

::: (\_(\ Hope

*: (=' :') this

•.. (,('')('') helped :)

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2 years ago

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Answer:

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20 square yards is the answer

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4 years ago

What is the d/dx tan^3x

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$\frac{d}{dx}(tan^{3}x) = \frac{d}{dx}(tanx)^{3}$
$= 3(tanx)^{2} \cdot sec^{2}x$

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4 years ago

A set of data with 1200 numbers is normally distributed with a mean of 27 and a standard deviation of 4. How many numbers in the

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Step-by-step explanation:

The mean is 27 and the standard deviation is 4.

23 is 1 standard deviation below the mean, and 31 is 1 standard deviation above the mean. According to the empirical rule, 68% of the population is between -1 and +1 standard deviations.

68% of 1200 is 816.

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95% of 1200 is 1140.

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4 years ago