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3 years ago

What is the value of x in the equation 2.5x + 10 = x - 0.5?

Mathematics

2 answers:

Troyanec [42]3 years ago

8 0

Answer:

Answer in above picture

Step-by-step explanation:

Option b is correct answer

marusya05 [52]3 years ago

4 0

Answer:

-7

Step-by-step explanation:

You first multiply both sides by 10 to get rid of the decimal points, we don't want them.

25x + 100 = 10x - 5

Then, you subtract 100 from both sides:

25x = 10x - 105

Then, you subtract 10x from both sides:

15x = -105

Lastly, you divide by 15 on both sides:

x = -7

So, your answer is -7 :)

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Andreas93 [3]

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3 years ago

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4, 6, 2, 8, 4, 4, 2, 10 Mean: Median: Mode:

Troyanec [42]

Answer:

Mean: 5

Median: 4

Mode: 4

Step-by-step explanation:

Mean:

1. To find the mean given a data set, you have to add up all the data points and then divide them by the number of data points there is.

$\frac{4+6+2+8+4+4+2+10}{8}$
$\frac{40}{8}$
$5$

Therefore, the mean is 5.

Median:

1. To find the median given a data set, we first have to arrange the data points in order.

$2, 2, 4, 4, 4, 6, 8, 10$

2. Next, we have to find which data point is in the middle. In this case, the middle number is 4.

Therefore, the median is 4.

Mode:

1. To find the mode given a data set, you just have to find which data point is the most frequent.

1 data point of 2
3 data points of 4
1 data point of 6
1 data point of 8

1 data point of 10

Because the most frequent value is 4, the mode is 4.

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3 years ago

Read 2 more answers

What is the inverse function f(x)=1/4x-2

Cloud [144]

The inverse function of the function above is f(x) = 4x + 8

You can find the inverse to any function by switching the x and f(x) values. After that, solve for the new f(x) value. The result will be the inverse function. The step-by-step process for this one is done below for you.

f(x) = 1/4x - 2 ----> Start by switching the f(x) and x

x = 1/4f(x) - 2 ----> Now add 2 to both sides

x + 2 = 1/4f(x) ----> Now multiply both sides by 4

f(x) = 4x + 8

Now that you've solved it for the new f(x), you have your inverse function.

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3 years ago

If f(x)= 3x + 1 what is f(1/3)

densk [106]

Answer:

Step-by-step explanation:

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2 years ago

PLEASE HELP kelly invested $1875 in a savings account which earns 3.35% interest compounded quarterly what will the account be w

attashe74 [19]

The account will be worth $2368.20 in 7 years.

The compound interest formula is

$A=p(1+\frac{r}{n})^{n\times t}$

where p is the principal invested, r is the interest rate as a decimal number, n is the number of times the interest is compounded yearly, and t is the amount of time.

3.35% = 3.35/100 = 0.0335.

Using our information, we have:
$A=1875(1+\frac{0.0335}{4})^{4*7}$

which comes out to $2368.20.

3 0

3 years ago