1 year ago

Find the difference. -99 - 1 = [?]

Mathematics

1 answer:

soldier1979 [14.2K]1 year ago

8 0

The difference is -100

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80 x 25 = n Expanded form 80 x ( ) Partial product 80 x 20= 80 x 5 =

defon

9514 1404 393

Answer:

2000

Step-by-step explanation:

Expanded form:

80 × (20 + 5)

Partial products:

80 × 20 = 1600

80 × 5 = 400

Sum of partial products: 1600 + 400 = 2000.

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2 years ago

87432 divided by 24 need help

Julli [10]

Answer:

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Step-by-step explanation:

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3 years ago

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the ratio of rock music to total CDs that Ella own is 25/40 polo has 50 rock music CDs the ratio of rock music to total CDs in h

cluponka [151]

If Polo has $n$ CDs, then $\frac{50}n=\frac{25}{40}$ hence $n=\frac{50\cdot40}{25}=80$

Hence, they have a total of $80+40=\boxed{120\text{ CDs}}$

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2 years ago

What is 6 to the power of negative 2

Travka [436]

Answer:

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Step-by-step explanation:

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3 years ago

The waiting time at an elevator is uniformly distributed between 30 and 200 seconds. What is the probability a rider must wait b

serg [7]

Answer:

17.65% probability a rider must wait between 1 minute and 1.5 minutes

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is between c and d is given by the following formula

$P(c \leq X \leq d) = \frac{d - c}{b - a}$

For this problem, we have that:

$a = 30, b = 200, c = 1*60 = 60, d = 1.5*60 = 90$

$P(60 \leq X \leq 90) = \frac{90 - 60}{200 - 30} = 0.1765$

17.65% probability a rider must wait between 1 minute and 1.5 minutes

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2 years ago