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3 years ago

PLEASE HELP THIS IS A LINEAR EQUATIONS

Mathematics

2 answers:

Stells [14]3 years ago

8 0

D or B I’m not sure

aalyn [17]3 years ago

7 0

Linear equations can be written different ways such the form y=mx+b, where m is the slope of the line and b is the y intercept.
We can substitute our given coordinates into the equations to find out which one is correct.
A:
$y = \frac{2}{3} x + 4$
$y = (\frac{2}{3} \times - 3) + 4 \\ y= \frac{ - 6}{3} + 4 \\ y= - 2 + 4 \\ y= 2$
For this equation, when the value of x is - 3, y is 2. This means that A is the correct equation as it passes through the given coordinate (-3,2), and has a slope (m) of 2/3.

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Carly and rob combined their dvd collections. now they have 42 dvds in all carly had 4 more dvds than rob. how many dvds did car

Nastasia [14]

The given data of the problem are 42 combined dvds from Carly and Rob and Carly having 4 more dvds than Rob. Now, the problem wants to find out how many dvds did Rob and Carly owned before combining them. We got a total of 42 dvds at hand, so let's divide it by 2 for Carly and Rob so we have 21 dvds each however, the problem emphasized that Carly had 4 more dvds than Rob. So, 21 dvds added by 4 dvds is the total number of dvds that Carly previously owned meaning Carly owned 25 dvds before while Rob owned only 17 dvds.

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3 years ago

Read 2 more answers

12x -20=n (3x-5) I need help I don’t get it please help me.

Salsk061 [2.6K]

Answer:

The value of n = 4 and

The value of x = $\frac{5}{3}$

Step-by-step explanation:

Method I:

As given, 12x -20=n (3x-5) .........(1)

Firstly , take 12x - 20

As 12x - 20 can be written as 4(3x - 5)

∴ equation (1) becomes

4(3x - 5) = n (3x-5)

Divide the equation by (3x-5) , we get

4 = n

Method II:

As given, 12x -20=n (3x-5)

⇒12x - 20 = 3nx - 5n

⇒12x - 3nx = 20 - 5n

⇒3x(4 - n) = 5( 4 - n)

Divide the equation by (4-n) , we get

3x = 5

⇒ x = $\frac{5}{3}$

∴ we get

n = 4 and x = $\frac{5}{3}$

Now, check that value of n and x satisfies the equation or not

12( $\frac{5}{3}$ ) - 20 = 4( 3( $\frac{5}{3}$ ) - 5)

⇒4(5) - 20 = 4(5 - 5)

⇒20 - 20 = 4(0)

⇒ 0 = 0

Hence , we get

The values of x and n satisfies the equation

so, we get

n = 4 and x = $\frac{5}{3}$

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3 years ago

Letter A represents the decimal

Sauron [17]

Answer:

answer is 0.4

Step-by-step explanation:

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3 years ago

Read 2 more answers

Fill in the blanks below regarding the end behavior of g(x) = -3x - 1. (3 pts each) On the left, the graph On the right, the gra

OLEGan [10]

Step-by-step explanation:

Step 1: Determine the end behavior

The left side of the graph goes to positive infinity in the y direction but negative infinity in the x direction.

$x$ → -∞

$f(x)$ → ∞

The right side of the graph goes to negative infinity in the y direction but positivie infinity in the x direction.

$x$ → ∞

$f(x)$ → -∞

4 0

2 years ago

A roulette wheel has the numbers 1 through 36, 0, and 00. A bet on four numbers pays 8 to 1 (that is, if you bet $1 and one of t

Natasha_Volkova [10]

Answer:

Lose $0.05

Step-by-step explanation:

There are 38 possible spots on the roulette wheel (numbers 1 to 36, 0 and 00).

If the player can choose four numbers on single $1 bet, his chances of winning (W) and losing (L) are as follows:

$P(W) = \frac{4}{38} \\P(L) = 1-P(W) = 1-\frac{4}{38} \\P(L) = \frac{34}{38}$

The expected value of the bet is given by the probability of winning multiplied by the payout ($8), minus the probability of losing multiplied by the bet cost ($1)

$EV=\frac{4}{38}*\$8 -\frac{34}{38}*\$1\\EV= -\$0.05$

On each bet, the player is expected to lose 5 cents ($0.05).

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3 years ago