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AlexFokin [52]
4 years ago
8

Using this number cube and spinner, which simulation would help you answer this question? Over the past 50 50 years, records for

one northwest city show that rain fell on the first day of spring 13 1 3 of the time. If you choose a year at random, what are the chances that the first day of spring will be a rainy Wednesday?
Mathematics
2 answers:
tiny-mole [99]4 years ago
5 0

Answer:

Probability=\frac{1}{21}\\\\Percentage\ chances\approx 4.76\%

Step-by-step explanation:

Probability: Probability of an event to occur is given by:

P=\frac{Number\ Favourable\ outcomes}{Number\ of\ total\ outcomes}

Probability of Wednesday:

Total\ number\ of\ outcomes=7(as\ there\ are\ 7\ days\ in\ a\ week)\\\\Favourable\ outcomes=1\ (only\ Wednesday)\\\\P(Wednesday)=\frac{Number\ of\ favourable\ outcomes}{Number\ of\ total\ outcomes}\\\\P(Wednesday)=\frac{1}{7}

Probability of first day rainy:

Let\ probability=P\\\\It\ is\ given\ that\ \frac{1}{3}\ times\ the\ first\ day\ is\ rainy.\\\\P=\frac{1}{3}

Probability that first day is rainy Wednesday:

Let probability=P

Since these two events are independent

P=P(Wednesday)\times P(rainy)\\\\P=\frac{1}{7}\times \frac{1}{3}\\\\P=\frac{1}{21}

Percentage chances of rainy Wednesday=\frac{1}{21}\times 100\approx4.76\%

sammy [17]4 years ago
3 0

Answer:

it is the first answer

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X^2+4x-11=0 what is the solution set?
Sauron [17]

Answer:

The solution set can be calculatedby the following steps;

Step-by-step explanation:

5 0
3 years ago
What is 3 divided by 4/5
Veseljchak [2.6K]
The answer is 3.75 or 3 3/4
3 0
3 years ago
Read 2 more answers
A taxi company charges a $2.00 base fare plus an additional fare based on a per-mile rate and a per-minute rate. Ryan's first ta
Fed [463]

A $2.00 base fare charge, and per-mile, and per-minute rates related as follows; 3•x + 7•y = 6.5 and 7•x + 14•y = 14, give the distance traveled in the third ride as 4.5 miles

<h3>How can the length of the third ride be calculated?</h3>

The base fare = $2.00

Let <em>x </em>represent the per-mile rate, and let <em>y </em>represent the per-minute rate, we have;

The cost of Ryan's first taxi ride = $8.50

Distance traveled in the first ride = 3.0 miles

Time taken during the first ride = 7 minutes

Therefore;

2 + 3•x + 7•y = 8.5

Which gives;

3•x + 7•y = 8.5 - 2 = 6.5

  • 3•x + 7•y = 6.5...(1)

Distance traveled in the second ride = 7.0 miles

Duration of the second ride = 14 minutes

The second ride cost = $16.00

Therefore;

2 + 7•x + 14•y = 16

Which gives;

7•x + 14•y = 16 - 2 = 14

  • 7•x + 14•y = 14...(2)

Solving the above simultaneous equations by multiplying equation (1) by 2 then subtracting the result from equation (2) gives;

(7•x + 14•y) - 2 × (3•x + 7•y) = 14 - 2×6.5 = 1

x = 1

  • The per-mile rate, <em>x </em>= $1

3•x + 7•y = 6.5

7•y = 6.5 - 3•x

7•y = 6.5 - 3×1 = 3.5

y = 3.5/7 = 1/2 = 0.5

  • The per-minute rate, <em>y </em>= $0.5

Duration of the third taxi ride = 10 minutes

Cost of the third ride = $13.50

Therefore;

2 + 1×a + 10×y = $13.50

Where <em>a </em>is the distance traveled during the third ride, we have;

2 + 1×a + 10×0.5 = $13.50

2 + a + 5 = 13.5

a = 13.5 - 2 - 7 = 4.5

  • The third ride was, <em>a </em>= 4.5 miles

Learn more about simultaneous linear equations here:

brainly.com/question/24085666

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3 0
2 years ago
1.Afla numarul abc,stiind ca abc:15=16 rest 1
mixas84 [53]

Step-by-step explanation:

Ques 1)

abc: 15 = 16 rest 1

that means that if abc is divided by 15 than we get the quotient as 16 and remainder as 1.

Hence using : dividend=divisor×quotient+remainder we have:

abc=15×16+1

Hence, the value of abc is 241.

Ques 2)

a)

486: x = 17

i.e. \dfrac{486}{x}=17

⇒ x=486×17=8262

b)

y: 18 = 35 rest 1

that means when y is divided by 18 we get the quotient as 35 and remainder as 1.

Hence using : dividend=divisor×quotient+remainder we have:

y=35×18+1=631

y=631

c)

730: z = 27 rest 1

that means when 730 is divided by z we get the quotient as 27 and remainder as 1.

Hence using : dividend=divisor×quotient+remainder we have:

730=27z+1

27z=730-1

27z=729

z=27 (dividing both side by 27)

Ques 3)

Let'a' and 'b' denote the two natural numbers such that a is greater than 'b'.

a-b=70----(1)

also when a is divided by b then we get the quotient as 8 and some remainder.

Let the remainder be 'r'.

this means a=8b+r

let us consider r=0.

a=8b

hence from (1) we have

7b=70

b=10 (on dividing both side by 7)

hence a=80.

when r=1,2,3,4,5,6

we do not get a natural number as value for a and b.

also when r=7 we get the value of b=9 and a=79

After r>7 we get the value of b<r such a condition is not possible.



6 0
4 years ago
Isiah Copeland sells tennis equipment. He is guaranteed a minimum salary of $1,500 per month plus 5.75% of his total sales.
raketka [301]

Isaiah's total sales for a month in which his gross pay was $2,075 was <u>$10,000</u>.

<h3>How are the total sales determined?</h3>

The total sales can be calculated by first subtracting the minimum salary from the gross pay to arrive at the sales commission.

The commission percentage is then applied on the sales commission to determine the total sales for the month.

<h3>Data and Calculations:</h3>

Minimum salary = $1,500

Sales commission = 5.75% of total sales

Gross pay = $2,075

Sales commission = $575 ($2,075 - $1,500)

Total sales = $10,000 ($575/5.75%)

<h3>Check:</h3>

Minimum Salary =  $1,500

Sales commission = $575 ($10,000 x 5.75%)

Gross pay =          $2,075

Thus, Isaiah's total sales for a month in which his gross pay was $2,075 was <u>$10,000</u>.

Learn more about sales and sales commission at brainly.com/question/24951536

#SPJ1

3 0
2 years ago
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