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4 years ago

6

The width of a rectangular painting is 5 inches shorter than it's length. Creat a table of values to include possible widths,len

gths,and areas of the painting.

1 answer:

Misha Larkins [42]4 years ago

6 0

A = L * W
W = L - 5

these are in inches...
length width area
10 5 50 in^2
9 4 36 "
8 3 24 "
7 2 14 "
6 1 6 "

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How is (s-t)(s/t) equivalent to (s^2/t) -s

tigry1 [53]

$(s-t)\cdot\dfrac{s}{t}=s\cdot\dfrac{s}{t}-t\cdot \dfrac{s}{t}=\dfrac{s^2}{t}-s$

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3 years ago

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An element with a mass of 810 grams decays by 29.3% per minute. To the nearest minute, how long will it be until there are 10 gr

lakkis [162]

Answer:

13

Step-by-step explanation:

i got it wrong but this was the correct answer

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3 years ago

Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assures you that 18

UkoKoshka [18]

Answer:

3/26

Step-by-step explanation:

Probability of the first box to have the secret decoder ring is 18 out of 52:

18/52= 9/26

Probability of the second box to have the ring is 17 out of 51, because one box with the ring already selected and not counted:

17/51= 1/3

Probability that both of them have the secret decoder ring:

9/26*1/3= 3/26

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3 years ago

Which expression are equal to the value of 3 in the number 14,397

Irina-Kira [14]

Answer:

300

Step-by-step explanation:

This is a place value problem.

The given figure is;

14, 397:

Pronounced as;

Fourteen thousand, three hundred and ninety seven:

14, 397;

10 000 ten thousand

4000 four thousand

300 three hundred

90 ninety

7 seven

The place value of 3 is hundreds.

6 0

3 years ago

On Texas Avenue between University Drive and George Bush Drive, accidents occur according to a Poisson process at a rate of thre

Zarrin [17]

Answer:

(a) The probability is 0.6514

(b) The probability is 0.7769

Step-by-step explanation:

If the number of accidents occur according to a poisson process, the probability that x accidents occurs on a given day is:

$P(x)=\frac{e^{-at}*(at)^{x} }{x!}$

Where a is the mean number of accidents per day and t is the number of days.

So, for part (a), a is equal to 3/7 and t is equal to 1 day, because there is a rate of 3 accidents every 7 days.

Then, the probability that a given day has no accidents is calculated as:

$P(x)=\frac{e^{-3/7}*(3/7)^{x}}{x!}$

$P(0)=\frac{e^{-3/7}*(3/7)^{0}}{0!}=0.6514$

On the other hand the probability that February has at least one accident with a personal injury is calculated as:

P(x≥1)=1 - P(0)

Where P(0) is calculated as:

$P(x)=\frac{e^{-at}*(at)^{x} }{x!}$

Where a is equivalent to (3/7)(1/8) because that is the mean number of accidents with personal injury per day, and t is equal to 28 because 4 weeks has 28 days, so:

$P(x)=\frac{e^{-(3/7)(1/8)(28)}*((3/7)(1/8)(28))^{x}}{x!}$

$P(0)=\frac{e^{-(3/7)(1/8)(28)}*((3/7)(1/8)(28))^{0}}{0!}=0.2231$

Finally, P(x≥1) is:

P(x≥1) = 1 - 0.2231 = 0.7769

3 0

3 years ago