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3 years ago

EASY I NEED HELP MATH QUESTION

Mathematics

1 answer:

gayaneshka [121]3 years ago

7 0

Answer:

Step-by-step explanation:

just put in 5 for x

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Can someone check this for me please? Thank you!

sineoko [7]

Step-by-step explanation:

You've got the concept correct, but be careful with your parentheses. You should write it 3/(2n). Otherwise it looks like three halves n.

5 0

3 years ago

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Find the value of x in the diagram and explain your reasoning

Paul [167]

Answer:

C 4.5 the two triangles in the diagram are similar.

Step-by-step explanation:

Since, the two triangles in the diagram are similar.

Therefore,

$4 \times x = 3 \times 6 \\ \\ x = \frac{18}{4} \\ \\ x = 4.5$

7 0

3 years ago

Suppose you have a bag containing 2 black marbles and 3 red marbles. You reach into the bag, select a marble, see what color it

TiliK225 [7]

Answer:

$\dfrac{9}{25}$

Step-by-step explanation:

Given that the bag contains black and red marbles.

Number of black marbles in the bag = 2

Number of red marbles in the bag = 3

Total number of marbles in the bag = Number of black marbles + Number of red marbles = 2 + 3 = 5

Let us have a look at the formula for probability of an event E, which can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

$P(\text{First red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5 }$

Now, the marble chosen at first is replaced.

Therefore, the count remains the same.

$P(\text{Second red marble}) = \dfrac{\text{Number of red marbles}}{\text{Total number of marbles}} = \dfrac{3}{5}$

Now, the <em>required probability</em> can be found as:

$P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }$

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3 years ago

Is this relation a function?

9966 [12]

Yes that is a function because every number has a pair that goes to each other once

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3 years ago

The sum of a number and -9 is -36

mars1129 [50]

Duh -37 Because 37-9 is 37 and so the answer is -37

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