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joja [24]
3 years ago
14

7x - y = 10 x - 4y = -14

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
8 0

Answer:

(2,4)

Step-by-step explanation:

using substitution you can rewrite 7x-y=10 to y=-10+7x

then use that to substitute for the y in the equation x-4y=-14; which gives you the equation; x-4(-10+7x)=-14

which you can then distribute using foil, giving you x=2.

then you can replace any equation's x with 2 to find y,

for example,

7(2)-y=10

then y=4

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Hey guys- need help in this one
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c

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Probability helps us to know the chances of an event occurring. The probability of pulling a green or red card is 9 / 100.

<h3>What is Probability?</h3>

Probability helps us to know the chances of an event occurring.

P =  \dfrac{Desired \ outcomes}{Posiible \ outcomes}

The probabilities of different color cards being pulled are 1/25 for red, 1/20 for green, 1/15 for purple, and 1/10 for black Therefore, the probability of pulling  a green or red card is,

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Hence, the probability of pulling a green or red card is  9 / 100.

Learn more about Probability:

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3 0
1 year ago
The population of a city increases by 4000 people each year. In 2025, the population is projected to be 450,000 people. What is
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P = 390,00 + 4000x

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Sorry if my explanations suck, I'm not great at explaining my thought process
5 0
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