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3 years ago

4(x - 1) please help me work this out

Mathematics

2 answers:

vladimir2022 [97]3 years ago

7 0

Multiple each term in the parentheses by 4 and the answer is 4x-4

kondor19780726 [428]3 years ago

3 0

Answer: x= -1

Step-by-step explanation:

First you take 4 and times it to x and -1, so 4 times x will just be 4x while 4 times -1 will be -4. Then it will look like this (4x - 4), you will have to make the x by itself and to do that is dividing it by 4 on both sides, so 4x/4= x while -4/4= -1. The answer is x= -1

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in one particular suburb slacks have been reduced to $36. This price is at 90% of the original price for slacks. Given this what

frez [133]

$40
40*90/100 = 36
You just have to be careful with the rest of the problem

7 0

3 years ago

Humberto evaluates the expression 4t² for t=3. what is the answer??

Artist 52 [7]

4t<span>²
= 4(3)</span><span>²
= 4 x 9
= 36</span>

7 0

3 years ago

The probability of winning a certain lottery is 1/77076 for people who play 908 times find the mean number of wins

Alex73 [517]

The mean is 0.0118 approximately. So option C is correct

<h3><u>Solution:</u></h3>

Given that , The probability of winning a certain lottery is $\frac{1}{77076}$ for people who play 908 times

We have to find the mean number of wins

$\text { The probability of winning a lottery }=\frac{1}{77076}$

Assume that a procedure yields a binomial distribution with a trial repeated n times.

Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial.

$n=908, \text { probability } \mathrm{p}=\frac{1}{77076}$

$\text { Then, binomial mean }=n \times p$

$\begin{array}{l}{\mu=908 \times \frac{1}{77076}} \\\\ {\mu=\frac{908}{77076}} \\\\ {\mu=0.01178}\end{array}$

Hence, the mean is 0.0118 approximately. So option C is correct.

4 0

3 years ago

Find the median of the data set: -66, -48, -52, -42

olga2289 [7]

-66, -52, - 48, -42

If you can have 2 medians (since there is only 4 numbers), it is -52 and -48

If you can only have one,then i believe you choose -50, because it is in between -48 and -52

hope this helps

6 0

3 years ago

$8000 at 4% compounded monthly for 9 years

quester [9]

4% of $8000 is $320 x 9 = $2880
The answer is $2880

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3 years ago