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3 years ago

Write a percentage as a decimal

Mathematics

2 answers:

Lilit [14]3 years ago

7 0

Remove the percentage symbol. Move decimal 2 points to left adding zeros if needed.

victus00 [196]3 years ago

6 0

E.g

5%= 0.05
10% = 0.1
12½%=0.125

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The winner of a race ran the distance in 45s at an average speed of 9.6 m/s. The runner who came in last finished and 48 seconds

RSB [31]

Answer:

The answer to your question is speed = 9 m/s

Step-by-step explanation:

Data

Winner Last runner

time = 45 s time = 48 s

speed = 9.6 m/s

Process

1) Calculate the distance they ran using the data of the winner

speed = distance / time

-Solve for distance

distance = speed x time

-Substitution

distance = (9.6)(45)

-Result

distance = 432 m

2.- Calculate the speed of the last runner

-Substitution

speed = 432/48

-Result

speed = 9 m/s

3 0

3 years ago

4x+7y=19<br> Y=x+9<br><br> U must solve it in substitution method

Hunter-Best [27]

The answer is (-4, 5) x= -4 y= 5

8 0

4 years ago

Mattias gets dressed in the dark one morning and chooses his clothes at random. He chooses a shirt (green, red, or yellow), a pa

Oliga [24]

Answer:

So, the number of ways in which the dress can be chosen

= 3 × 2 × 2

= 12.

And the combinations are

(Green shirt, black pant, checkered shoes),

(Green shirt, black pant, red shoes),

(Green shirt, blue pant, checkered shoes),

(Green shirt, blue pant, red shoes),

(Red shirt, black pant, checkered shoes),

(Red shirt, black pant, red shoes),

(Red shirt, blue pant, checkered shoes),

(Red shirt, blue pant, red shoes),

(Yellow shirt, black pant, checkered shoes),

(Yellow shirt, black pant, red shoes),

(Yellow shirt, blue pant, checkered shoes),

(Yellow shirt, blue pant, red shoes).

The tree diagram is below.

Step-by-step explanation:

7 0

3 years ago

Rewrite with only sinx and cosx. Cos2x - sinx

Margarita [4]

Cos2x= 1 - 2sin $x^{2}$ x
subtract sinx to finsih

3 0

3 years ago

Use the formula for the probability of two dependent events P(A and B) to derive the conditional probability formula for P(B | A

gregori [183]

The conditional probability formula for P(B | A) has been derived from two dependent events P(A and B).

<h3>What is said to be dependent events?</h3>

When the outcome from one event influences the outcome of the other, two events are referred to as dependent.

Dependent events in probability are generally real-life events that depend on another event to occur.
Sam, for example, did well on his math test because he prepared; the gym class used to have a football session even though Adam brought a football from home.
When you look at these examples, you will realize that one occurrence is dependent on the other.

Derivation of conditional probability from two dependent events P(A and B) is-

The probability multiplication rule is used to derive the conditional probability formula, P(A and B) = P(A)×P(B|A).

This rule is also known as P(AB). The Union symbol (∪) represents "and," as in event A occurring and event B occurring.

Step 1: Write the multiplication rule down:

P(A and B) = P(A)*P(B|A)

Step 2: P(A) divides both sides of the equation:

P(A and B) / P(A) = P(A)*P(B|A) / / P(A)

Step 3: On the right side of the equation, cancel P(A):

P(A and B) / P(A) = P(B|A)

Step 4: Rewrite the equation as follows:

P(B|A) = P(A and B) / P(A)

Therefore, P(B | A) conditional probability formula is compiled from two dependent events P (A and B).

To know more about the conditional probability, here

brainly.com/question/10739997

#SPJ4

8 0

2 years ago