3 years ago

(2x-5)(4x+7) answer to this is?

Mathematics

1 answer:

Marizza181 [45]3 years ago

3 0

The solution to the problem is 8x^2-6x-35

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2. Margie Spencer wants to have $100,000 in her savings account in 20 years. If her account pays 6.6% annual

WITCHER [35]

$~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\dotfill & \$100000\\ P=\textit{original amount deposited}\\ r=rate\to 6.6\%\to \frac{6.6}{100}\dotfill &0.066\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{semiannually, thus two} \end{array}\dotfill &2\\ t=years\dotfill &20 \end{cases}$

$100000=P\left(1+\frac{0.066}{2}\right)^{2\cdot 20}\implies 100000=P(1.033)^{40} \\\\\\ \cfrac{100000}{1.033^{40}}=P\implies 27288.97\approx P$

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2 years ago

A board game has 25 cards, each printed with a number from 1 through 25. Sameer shuffled the cards, and then selected 1 card.

Yuki888 [10]

Total number of cards = 25 .
Total number of possible draws = 25
Number of possible successes = 5

(The successful draws are 1, 2, 3, 9, and 18.)

Probability of success = 5/25 = <em>1/5 </em> = 0.2 = 20%

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3 years ago

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luda_lava [24]

Answer:

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Step-by-step explanation:

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2 years ago

Liam, Sarah and Emily shared some money in the ratio 3:6:8

tino4ka555 [31]

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2 years ago

Solve 2x2 + 3x – 7 = x2 + 5x + 39 for x.

Brrunno [24]

The answer to this question is:
x = 1 + or - the square root of 47

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3 years ago