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2 years ago

Suppose S and T are mutually exclusive events. Find P(S or T)? sp(S) = 6/11 and p(t)= 1/10

1 answer:

3 0

Using P(A∪B) = P(A) + P (B) - P(A∩B)
If we apply this in the question
Then P(S∪T) = P(S) + P(T) - P (S∩T)
= 6/11 + 1/10 - P (S∩T)
= 71/110 - P (S∩T)
But events S and T are mutually exclusive events therefore,
P(S∩T) = 0,
Hence P(S∪T) = 71/110

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2 years ago

The expression 3x2−5x2simplifies to −2x2 is this true?

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fgiga [73]

Answer:

Step-by-step explanation:

Use the sine ratio in the left, right triangle to find the common side to both triangles and the exact values

sin60° = $\frac{\sqrt{3} }{2}$ , cos45° = $\frac{1}{\sqrt{2} }$ , thus

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2 years ago

To show what he learned about the properties of volume for solids, liquids and gases, Viktor wrote the following summary.

Brrunno [24]

The wrong statement in Viktor's summary is When a round solid ball is placed in a box, the ball takes the shape of the box

The matter has three main states which are

Solid
Liquid
Gas

These states define the way we interact and manipulate materials. For instance:

Liquids take the shape of the container that contains them. For example water, milk, soda, among others.

Solids have a defined shape and do not deform when manipulated or placed inside another container. For example, a round solid ball.

Gases generally do not have colors and their atoms are not organized so they do not have a definite shape and take the shape of their container. For example, the air in a balloon.

According to the above, the error in Viktor's summary is in the first phase, and the correct statement is A. because solids does not take the shape of its container.

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3 years ago

(-5,7) and (2,5) find the slope of the line passing through the given points

svp [43]

Answer: -2/7

Step-by-step explanation:

To find the slope, you use the formula $m=\frac{y_2-y_1}{x_2-x_1}$ .

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Now, we know the slope is -2/7.

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2 years ago