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Reika [66]
3 years ago
10

Which two expressions are equivalent? A. 4(2 + x) and 4•2+2•x, B. 4+2 + x and (4 + 2)+x, C. 4•X + 2 and 4•(x+2), D. 4 / (2 - x)

and 4- 2 / X?
Mathematics
2 answers:
kirill115 [55]3 years ago
8 0

Answer:

B

Step-by-step explanation:

labwork [276]3 years ago
8 0
Answer is B

To something it up you can basically replace the x with any number and they will all come out as different sums except for b
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What value will make the equation true -21-?=1.5
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Answer: ? = -22.5

Step-by-step explanation:

Using a negative number to replace the ? turns the minus into a plus sign.

-21 - (-22.5) = 1.5 is the same as -21 + 22.5 = 1.5

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What is the difference between 589.01 and 0.210
gulaghasi [49]
It is 588.8 as all you have to do is subtract 0.210  from 589.01 and add up the ''.''
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Please help me solve 5m-12=38
fgiga [73]
Add 12 to both sides to get

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divide by 5 to get
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If the probability that the Islanders will beat the Rangers in a game is 2/7, what is the probability that the Islanders will wi
Helga [31]

0.1328 is the probability that the Islanders will win exactly zero out of six games in a series against the Rangers.

<u>Step-by-step explanation:</u>

Given data is that probability the islanders will beat the rangers in a game is \frac{2}{7}.

So, probability that the islanders will not beat the rangers in the game is = 1-\frac{2}{7}=\frac{5}{7}

Let, x be the favorable outcome as,

x = no. of times islanders win the game

Probability of success (p) =  \frac{2}{7}

Probability of failure (q) = \frac{5}{7}

So, the probability of x would be,

                      x = n C_{r} \times(p)^{r} \times(q)^{n-r}

                     P(x=0) = 6 C_{0} \times\left(\frac{2}{7}\right)^{0} \times\left(\frac{5}{7}\right)^{6}

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3 years ago
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MArishka [77]

Answer:

option D is correct.

Step-by-step explanation:

we are given the function \sqrt{\frac{(1-\cos \theta )(1+\cos \theta )}{\cos ^2\theta }}

we know that the expansion is given by (1-\cos \theta )(1+\cos \theta )=1-\cos ^2\theta =\sin ^2\theta

so \sqrt{\frac{(1-\cos \theta )(1+\cos \theta )}{\cos ^2\theta }}=\sqrt{\frac{\sin ^2\theta }{\cos ^2\theta }}=\sqrt{\tan ^2\theta }=|\tan \theta |

Hence, option D is correct.

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