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3 years ago

Which is a graph of y = 3x - 1

Mathematics

1 answer:

Reil [10]3 years ago

8 0

Answer:

$Graph \ in \ attachment .$

Step-by-step explanation:

The given equation is ,

$\implies y = 3x - 1$

This equation is in slope intercept form , wrt that we have ,

slope = 3
y - intercept = (-1) .

So the graph will paàs from one unit below the y axis , having a slope of 3 . The coordinates at x axis will be (0.33 ,1 )

Refer to the required graph in attachment !

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When 20 is subtracted from five times a number, the result is the same as when 18 is added to three times the number. What is th

natima [27]

Answer:

Number is 19

Step-by-step explanation:

denote the number by x.

the line says:

5x - 20 = 18 + 3 x

Subtracting 3x form both sides

2x - 20 = 18

adding 20 to both sides

2x = 38

dividing both sides by 2

x = 19

8 0

3 years ago

Read 2 more answers

Felipe won a charity raffle. His prize will be randomly selected from the 9 prizes shown below.

viva [34]

Question a is = 1/9 one over nine
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4 0

4 years ago

A ticket for a seat at a village parish play costs £3.95 There are 17 rows of seats. There are 29 seats in each row. The village

Tcecarenko [31]

Answer:

Total money earned = £1,947.35

Step-by-step explanation:

Given:

Per ticket cost = £3.95

Number of rows = 17

Number of seats in each row = 29 seats

Find:

Total money earned.

Computation:

Total number of seats = Number of rows × Number of seats in each row

Total number of seats = 17 × 29

Total number of seats = 493 seats

Total money earned = Total number of seats × Per ticket cost

Total money earned = 493 × £3.95

Total money earned = £1,947.35

5 0

3 years ago

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Delicious77 [7]

It is y=2x-4 (the 4th answer)

6 0

3 years ago

A running shoe store mounts a new promotional campaign. Purchasers of new shoes may, if dissatisfied for any reason, return them

Vitek1552 [10]

Answer:

$P(K = k ) = \ ^nC_x * p^k * (1-p)^{n-k}$

Here k is the random number of number of pairs of shoes that will be returned for refund, which can be k = 0,1 ,2,3,4 ..., 120

The mean is $E(K) = np = 13.2$

The standard deviation is $\sigma = 3.43$

The mean is $E(C) = E(105 K) = 1386$

The standard deviation is $\sigma = 381.48$

Step-by-step explanation:

From the question we are told that

The cost to dealer for each refund is $C = \$105$

The probability that a shoe will refunded is $P(x) = 0.11$

The number of shoes purchased is n = 120 pairs

Generally the probability distribution of the number of pairs of shoes that will be returned for refunds is

$P(K = k ) = \ ^nC_x * p^k * (1-p)^{n-k}$

Here k is the random number of number of pairs of shoes that will be returned for refund, which can be k = 0,1 ,2,3,4 ..., 120

Generally the mean is mathematically represented as

$E(K) = np = 120 * 0.11$

=> $E(K) = np = 13.2$

Generally the standard deviation is mathematically represented as

$\sigma = \sqrt{ n* p (1-p)}$

=> $\sigma = \sqrt{ 120* 0.11 (1-0.11)}$

=> $\sigma = 3.43$

Generally the total refund cost is mathematically represented as

$C = 105 K$

Here K denotes the number of shoes returned

Generally the mean of the total refund cost is mathematically represented as

$E(C) = E(105 K) = 105 E(K)$

=> $E(C) = E(105 K) = 105 * 13.2$

=> $E(C) = E(105 K) = 1386$

Generally the variance of the total refund cost is mathematically represented as

$Var(K) = 105^2 * E(K)$

=> $Var(K) = 105^2 * 13.2$

=> $Var(K) = 145530$

=> $\sigma = \sqrt{145530 }$

=> $\sigma = 381.48$

7 0

3 years ago