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3 years ago

What is the value of x?

Mathematics

1 answer:

ioda3 years ago

7 0

Answer:

50.714 (3 dp)

Step-by-step explanation:

Using trigonometry.

$cos(\theta)=\frac{adj}{hyp} \\adj = hyp * cos(\theta)\\120*cos(65) = 50.714$

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X + y2 = 25 x + 3y = 33

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Are these 2 different questions or is this one equation

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3 years ago

You flip a coin three times in a row. What is the probability you will get three tails?

Romashka-Z-Leto [24]

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Step-by-step explanation:

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3 years ago

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pav-90 [236]

Answer:

Step-by-step explanation:

Let us say, Olivia's age is x.

Now as the question says, we will get this equation.

$( \frac{1}{3} x ) + 12= 2x - 3$

Multiply both sides by 3.

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Then, we will get the answer.

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2 years ago

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g100num [7]

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3 years ago

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b)the balls that are withdrawn are not replaced.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