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3 years ago

2x+4=4(x+1)−2 solve this equation

Mathematics

2 answers:

Alla [95]3 years ago

7 0

Answer:

x = 3

Step-by-step explanation:

2x + 4 = 4x -2

olchik [2.2K]3 years ago

4 0

Answer:

x=1

Step-by-step explanation:

hope this helps :)

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Which ordered pair is a solution of the equation y = 3x?

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I believe it’s b or c... Hope this helps!

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3 years ago

Claudine has $45. She gives

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3 years ago

A simple die is thrown 100 times and the number five appears 14 times. Find the experimental probability of throwing a five, giv

mario62 [17]

Answer:

The experimental probability of throwing a five is 0.087.

Step-by-step explanation:

Given:

Number of trials (n) = 100

Number of times 5 appears (x) = 14

Let the event of occurrence of 5 be success and the probability represented by 'p'. So, all the other numbers occurrence is failure and its probability is represented as 'q'.

Probability of success is given as:

$p=\frac{Number\ of\ favorable\ events}{Total\ number\ of\ outcomes}$

Favorable event is occurrence of 5. So, its number is 1 as there is only one 5 in the die. Total outcomes are 6 as there are six numbers. So,

$p=\frac{1}{6}$

Now, probability of failure is given by the formula:

$q=1-p=1-\frac{1}{6}=\frac{5}{6}$

Now in order to find the experimental probability of 14 successes out of 100 trials, we apply Bernoulli's theorem which is given as:

$P(x) = ^nC_xp^xq^{n-x}$

Plug in all the given values and find the probability of 14 successes. This gives,

$P(x=14)=^{100}C_{14}(\frac{1}{6})^{14}(\frac{5}{6})^{100-14}\\\\P(x=14)=0.087$

Therefore, the experimental probability of throwing a five is 0.087.

8 0

3 years ago

Becca has saved 25% of the money that she needs to buy a new tennis racket. If she has saved $21 jow much money does the tennis

nexus9112 [7]

Let x be the entire portion of the money Becca needs to save to buy a new tennis racket.

So, 0.25x=$21

x=$21/0.25
x=$84

Thus, the total amount she needs to save is $84. Now, we'll deduct 25 from 84 to get the 75 percent or the remaining amount she has to save.

$84-$21=$63

The answer is $63.

6 0

3 years ago

Read 2 more answers

1. In an AP, the ratio of the 2nd term to the 7th term is 1/3. If the 5th term is

grandymaker [24]

Answer:

T15 = 31

Step-by-step explanation:

Its in the picture

I hope it helps :)

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3 years ago