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vovikov84 [41]
4 years ago
12

Replace ? with a whole number to make the statements true.

Mathematics
1 answer:
Makovka662 [10]4 years ago
8 0

Answer:

  a.  5

  b.  545

  c.  0

Step-by-step explanation:

These are straightforward division problems, easily solved using your own memorized multiplication facts, or using a calculator.

a.  20 ÷ 4 = 5 means 5 × 4 = 20

b.  2725 ÷ 5 = 545 means 545 × 5 = 2725

c.  0 ÷ 5 = 0 means 0 × 5 = 0

_____

When using the Google calculator and standard keyboard symbols, you can use the slash (/) for "divided by" and the asterisk (*) for "times."

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9/10 + 3/100 plz hlp in dire need of answer
Elza [17]

Answer:

I think it's 93/100

8 0
3 years ago
A machine stamps 330 parts in 11 minutes. Find the unit rate in parts per hour.
zavuch27 [327]

Answer:

1,800 parts per hour

Step-by-step explanation:

330 parts = 11 min

330/11=30

30 parts = 1 min

60 min = 1 hour

30x60min=1,800

1,800 parts per hour

5 0
3 years ago
Which inequality is a true statement?
tiny-mole [99]

Answer:

It is the second one and the last one.

Step-by-step explanation:

5 0
3 years ago
Need help pleaseI was bad at math in school so lwant to learn
aleksklad [387]

The probability of an event is expressed as

Pr(\text{event) =}\frac{Total\text{ number of favourable/desired outcome}}{Tota\text{l number of possible outcome}}

Given:

\begin{gathered} \text{Red}\Rightarrow2 \\ \text{Green}\Rightarrow3 \\ \text{Blue}\Rightarrow2 \\ \Rightarrow Total\text{ number of balls = 2+3+2=7 balls} \end{gathered}

The probability of drwing two blue balls one after the other is expressed as

Pr(\text{blue)}\times Pr(blue)

For the first draw:

\begin{gathered} Pr(\text{blue) = }\frac{number\text{ of blue balls}}{total\text{ number of balls}} \\ =\frac{2}{7} \end{gathered}

For the second draw, we have only 1 blue ball left out of a total of 6 balls (since a blue ball with drawn earlier).

Thus,

\begin{gathered} Pr(\text{blue)}=\frac{number\text{ of blue balls left}}{total\text{ number of balls left}} \\ =\frac{1}{6} \end{gathered}

The probability of drawing two blue balls one after the other is evaluted as

\begin{gathered} \frac{1}{6}\times\frac{2}{7} \\ =\frac{1}{21} \end{gathered}

The probablity that none of the balls drawn is blue is evaluted as

\begin{gathered} 1-\frac{1}{21} \\ =\frac{20}{21} \end{gathered}

Hence, the probablity that none of the balls drawn is blue is evaluted as

\frac{20}{21}

8 0
1 year ago
It is estimated that there are 22 deaths for every 10 million people who use airplanes. A company that sells flight insurance pr
Alex Ar [27]

Answer:

The insurance company can make $0.78 for each policy that it sells

Step-by-step explanation:

The loss incurred to the insurance company for each death claim is:

L = \$1-\$100,000=-\$99,999

This event has a 22 in 10 million probability of happening.

The gain for the company for each policy not claimed is:

G= \$1

This event has a 9,999,978 in 10 million probability of happening.

The expected value is:

EV =\$1*\frac{9,999,978}{10,000,000} -\$99,999*\frac{22}{10,000,000} \\EV=\$0.78

Therefore, over the long run, the insurance company can make $0.78 for each policy that it sells.

7 0
3 years ago
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