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3 years ago

Which expression is equal to x + (y + z)?

Mathematics

2 answers:

shusha [124]3 years ago

8 0

Answer: the answer would be A not C.

Step-by-step explanation:

arsen [322]3 years ago

5 0

X+(y+z) is equal to saying (x+y)+z

This is called the cumulative property when order doesn’t matter or doesn’t change the equation. As in 1+2 is the same as 2+1. No matter which way we get the same answer. This only works with multiplication and addition though. Hope this helps. Any questions please just ask!! Thank you so much!!

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at a store, the probability that a customer buys socks is 0.15. the probability that a customer buys socks given that the custom

leva [86]

Answer: Option B

Step-by-step explanation:

First we assign a name to the events:

Event S: a customer buys socks

Event H: a customer buys shoes.

We know that :

$P (S) = 0.15$

We also know that the probability of S given that H occurs is:

$P(S|H) =\frac{P(S\ and\ H)}{P(H)}=0.20$

If two events S and H are independent then:

$P (S) * P (H) = P (S\ and\ H)$

This mean that if two events S and H are independent then:

$P(S|H) =\frac{P(S)*P(H))}{P(H)}$

$P(S|H) =P(S)$

We know that:

$P(S|H) =0.20$ and $P (S) = 0.15$

$0.20\neq 0.15$

This means that S and H events are dependent.

The answer is the option B

3 0

3 years ago

Hey can you please help me posted picture of question

Olenka [21]

Hello!

The variable "n" represents an exponent.

An exponent is used to multiply a number (b) by itself "n" times. For example, if the expression were to read (b²) it would represent the following:

b × b

The same could be said for (b³):

b × b × b

Even ( $b^{10}$ ):

b × b × b × b × b × b × b × b × b × b

I hope this helps!

6 0

3 years ago

What value of m makes the equation true? m + 2m - 6 = -12 + 2m.

denpristay [2]

the answer is 6 i think

4 0

3 years ago

Read 2 more answers

Cual es el complementario de un angulo

jonny [76]

Answer:

La suma de los ángulos complementarios es 90 °