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2 years ago

Which equation does the graph of the systems of equations solve?

Mathematics

1 answer:

Lyrx [107]2 years ago

7 0

Solution is x=2 and y=-3

check the slopes since both are in slope int form
y=mx+b
m=slope
b=yint

we see one line has a slope of -2 and yint of 1
another one has a slope of 1/2 and yint of -4

y=-2x+1 and y=1/2x-4
1/2x-4=-2x+1

last one

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Elle can buy 2 quarts of milk for 3$ or 1 gallon milk for 3$ which is the better deal

prisoha [69]

1 gallon for $3 is the better deal because you're getting twice as much for the same price

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3 years ago

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There are 500 students in a high school senior class. Of these 500 students, 300 regularly wear a necklace to

andre [41]

Answer:

1. P(N) = 3/5

2. P(R) = 2/5

3. P(N and R) = 1/4

4. P(N or R) = 3/4

Step-by-step explanation:

1. Let's review the information given to us to answer the problem correctly:

Number of students in a high school senior class = 500

Number of students that regularly wear a necklace = 300

Number of students that regularly wear a ring = 200

Number of students that wear a necklace and a ring = 125

2. What is P(N), the probability that a senior wears a necklace?

Let's recall the formula of probability:

Probability = Number of favorable outcomes/Total of possible outcomes

Substituting with the real given values:

P(N) = 300/500 = 3/5 (Dividing by 100 numerator and denominator)

P(N) = 3/5

3. What is P(R), the probability that a senior wears a ring?

Substituting with the real given values:

P(R) = 200/500 = 2/5 (Dividing by 100 numerator and denominator)

P(R) = 2/5

4. What is P(N and R), the probability that a senior wears a necklace and a ring?

Substituting with the real given values:

P(N and R) = 125/500 = 1/4 (Dividing by 125 numerator and denominator)

P(N and R) = 1/4

5. What is P(N or R), the probability that a senior wears a necklace or a ring?

P(N or R) = P(N) + P(R) - P(N and R)

Substituting with the real given values:

P(N or R) = 3/5 + 2/5 - 1/4

P(N or R) = 5/5 - 1/4

P(N or R) = 1 - 1/4

P(N or R) = 3/4

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3 years ago

Y = -2x + 19 y = x + 7

andrey2020 [161]

System of equations:

$y=-2x+19$

$y=x+7$

The intersection point for this is (4,11).

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3 years ago

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Help please quick 29 points please answer

melomori [17]

Answer:

Step-by-step explanation:

It costs $7 for 1 baseball and Mrs.Weeks is buying 36 baseballs, that would be: $7 X 36 = $252

It costs $5 for 1 softball and Mrs.Weeks is buying 24 softballs that would be:

$5 X 24 = $120

$252 + $120 = $372 for the baseballs and softballs

Mrs.Weeks gives the cashier four $100 bills that is $400 dollars.

so $400 - $372 = $28 (Mrs.Weeks change)

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3 years ago

Help please!! Don't understand can someone explain?

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You might want to send the link/attachment again. It says 404 not found.

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3 years ago