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3 years ago

10

4. A certain bacteria doubles every day. If there are 810 bacteria on day one, how long will it take the bacteria to grow to 206

550?

1 answer:

34kurt3 years ago

4 0

Answer:

<h2>255 days</h2>

Step-by-step explanation:

<h3>810 ÷ 206550 = 255</h3>

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How many grams are equal to 3,418 milligrams? Use the placement of the decimal point when dividing by a power of 10 to help you.

k0ka [10]

Answer:

3.418

Step-by-step explanation:

A gram is 1/1000 of a gram so if we move the decimal point over 3 places you get 3.418.

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2 years ago

Scientific form of 47500000000

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$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

Scientific notation for above value is ~

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2 years ago

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Answer:

D. 19 houses

Step-by-step explanation:

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3 years ago

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Find the rate if the principal is $900, the time is 3 years, and the interest is $135. A) 5% B) 7.5% C) 15% D) 20%

Rus_ich [418]

The answer would be A) 5%. You can solve this by dividing 135$ by three years to get 45. then divide 45 by 900 to get 0.05 which is 5% in decimal form.

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3 years ago

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the di

Olin [163]

Solution: We are given:

ACT scores follow normal distribution with $\mu=20.9,\sigma =4.8$

SAT scores follow normal distribution with $\mu=1026,\sigma=209$

Now, let's find the z score corresponding to Joe's SAT score 1351.

$z=\frac{x-\mu}{\sigma}$

$=\frac{1351-1026}{209}$

$=\frac{325}{209}$

$=1.56$

Therefore, Joe's SAT score is 1.56 standard deviations above the mean.

Now, we have find the Joe's ACT score, which will be 1.56 standard deviations above the mean.

Therefore, we have:

$z=\frac{x-\mu}{\sigma}$

$1.56=\frac{x-20.9}{4.8}$

$1.56 \times 4.8 = x - 20.9$

$7.488=x-20.9$

$x=20.9+7.488$

$x=28.388 \approx 28.4$

Therefore, Joe's equivalent ACT score to SAT score 1351 is 28.4

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3 years ago