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3 years ago

Solve the system using the elimination method. 3x-2y=15 x+_y=0

Mathematics

1 answer:

mestny [16]3 years ago

5 0

Answer:

x = 3, y = -3

Step-by-step explanation:

3x - 2y = 15 (eq 1)

x + y = 0 (eq 2)

(eq 2) x 2

2x + 2y = 0 (eq 3)

(eq 1) + (eq 3)

5x = 15

x = 3

SUB x=3 into (eq 2)

3 + y = 0

y = -3

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2 years ago

if a pair of standard dice are rolled what is the probability that one die shows a six but not both of them. reduced fraction an

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Answer:

$P=\frac{5}{18}$

Step-by-step explanation:

we know that

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The event space is the number of outcomes in the event you are interested in.

Let

x------> size of the event space

y-----> size of the sample space

if a die is rolled the sample space is

$\{1,2,3,4,5,6\}$

if two dice rolled the sample space is

$\{1,2,3,4,5,6\}*\{1,2,3,4,5,6\}$

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The size of the event space x is

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substitute

$P=\frac{10}{36}$

Simplify

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2 years ago