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olga55 [171]
3 years ago
14

What is the slope to the equation (2,1) (-1,-2)

Mathematics
2 answers:
kipiarov [429]3 years ago
8 0
(2y,1x) do u get it or am i not helping sorry if this doesnt help

Alenkinab [10]3 years ago
5 0
Okay,

this is the formula that i use

y2-y1/x2- x1

plug it in so it is going to be

-2 - 1             -3
______ =      ____ = a (-) divided by a (-) is a (+)  so the answer is 1 

-1 - 2              -3
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Hi! ❤️ I’m looking for help here thanks.
abruzzese [7]

Answer:

i dont remember how to do this and i just did this last year

Step-by-step explanation:

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2 years ago
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For the graph 2x - 3y - 7 = 0 <br> determine the coordinates of the axes intercepts.
Sliva [168]

Answer:

X intercept: (7/2, 0)

Y intercept: (0, -7/3)

Step-by-step explanation: Add 7 to both sides. We get 2x-3y=7

Now, plug in zero for y, and we are left with 2x = 7 (the y cancels.) Dividing by 2 leaves us 7/2, and (0, 7/2)

Now starting back to 2x-3y=7

Plug in zero for x, and we are legt with -3y = 7 (the x cancels.) Divide by -3, and we get -7/3 and (-7/3, 0)

8 0
2 years ago
Please Help<br> Question; What is the value of x?
Maksim231197 [3]

Answer:

x+5/30 = 16/20

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Step-by-step explanation:

x+5/30 = 16/20

20x+100=480

20x=380

x=19

6 0
3 years ago
Fraction Problem, need help
igor_vitrenko [27]
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3 years ago
a lottery costs $1 per ticket. the player selects a sincle letter from A to T and a single digit from 0 to 9. if both the letter
lara [203]
<h3>Answer:  0.25 dollars (ie 25 cents)</h3>

================================================

Explanation:

The letter T is the 20th letter in the English alphabet. This means that there are 20 letters to pick from to go with the 10 single digit numbers to pick from. We have 20*10 = 200 different combinations (eg: one combination is K4).

Out of these 200 combinations, there is exactly one winning match.

The probability of winning is therefore P(W) = 1/200 = 0.005 and the probability of losing is P(L) = 1-P(W) = 1-0.005 = 0.995 where W and L represent winning and losing respectively.

The net value of winning is V(W) = 250 - 1 = 249 because the player wins $250 but they lose $1 (which is the cost of the ticket). The net value of losing is V(L) = -1, indicating the player has lost that $1 and hasn't gained any money at all.

-----------

To summarize so far:

P(W) = 0.005

P(L) = 0.995

V(W) = 249

V(L) = -1

Multiply the probability P values with the corresponding net values V, then add up the products to get the expected value:

E(X) = P(W)*V(W) + P(L)*V(L)

E(X) = 0.005*249 + 0.995*(-1)

E(X) = 0.25

The expected value is 0.25 dollars or 25 cents

This positive expected value means that the game is favored toward the player, because over the long run, the player gains an average of 25 cents each time they play. On the other side of the spectrum, the lottery company loses on average 25 cents each time. The nonzero expected value means that the game is not fair.

7 0
3 years ago
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