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3 years ago

The value of y in the system of equations is:

Mathematics

1 answer:

nirvana33 [79]3 years ago

5 0

Y=1
Explanation:
You have to plug 2+x into the y of the first equation. After you solve that you should get-1 as the answer for x so you plug -1 into the x of the second equation and the value of y would be 1.

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I need to write this inequality in words <br> X <-3

Temka [501]

X is less than negative 3
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6 0

2 years ago

Read 2 more answers

An urn contains 12 balls, of which 4 are white.

wel

Answer:

a) $\frac{1}{3}$

b) $\frac{4}{12}\,,\,\frac{4}{11}\,,\,\frac{4}{10}\,,...$

Step-by-step explanation:

Number of balls in the urn = 12

Number of white balls in the urn = 4

So, number of balls which are not white = 12 - 4 = 8

We know that probability = No. of outcomes/Total number of outcomes

Let $A_i\,,\,B_i\,,\,C_i$ denotes the event of getting white ball by A, B and C

a) each ball is replaced after being drawn.

Probability = Number of white balls/Total number of balls

Solution: $P(A_i)=P(B_i)=P(C_i)=\frac{4}{12}=\frac{1}{3}$

b)the balls that are withdrawn are not replaced.

Solution:

If A wins: $P(A_1)=\frac{4}{12}=\frac{1}{3}$

If A lost and B wins: $P\left ( B_1|A_1^{c} \right )=\frac{4}{11}$

If A and B lost and C wins: $P\left ( C_1|A_1^{c}\,B_1^{c} \right )=\frac{4}{10}$

and so on....

4 0

3 years ago

Rewrite 25 and 125 as exponents that have the same base. Write your answers #^# and

dangina [55]

Answer:

25 = 5^2
125 = 5^3

Step-by-step explanation:

Both 25 and 125 are powers of 5. As such, they can be written as the powers they are:

25 = 5·5 = 5^2

125 = 25·5 = 5·5·5 = 5^3

3 0

2 years ago

Suppose that Y has a gamma distribution with parameters α and β. a If a is any positive or negative value such that α + a > 0

Nookie1986 [14]

Answer:

2nd option

Step-by-step explanation:

makes most sense

3 0

3 years ago

Which unit of measurement would be appropriate for the volume of a sphere with a radius of 2 meters

Semenov [28]

The volume of a sphere is found with the following formula:

$V = \frac{4}{3}\pi r^3$

The radius is raised to a power of 3. Since the radius is 2 <em>meters</em>, this means that the volume would be measured in cubic meters.

3 0

3 years ago