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3 years ago

Find the value of this expression if x = 4

Mathematics

2 answers:

Angelina_Jolie [31]3 years ago

7 0

Answer:

-4

Step-by-step explanation:

(4)^2-8/4-6

8/-2

-4

Papessa [141]3 years ago

6 0

Answer:

Here is the solution. Hope it helps ☺️

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In a continuous series, mean(x) = 80, assumed mean(A) = 60 and<br>EF=40 then find the value of EFd.

Aneli [31]

Using the given information, the value of Σfd is 800

<h3>Calculating mean using Assumed mean </h3>

From the question, we are to determine the value of Σfd

The formula for mean, using the assumed mean method is given by

$\bar x = A + \frac{\sum fd}{\sum f}$

Where $\bar x$ is the mean

A is the assumed mean

From the given information,

$\bar x = 80$

$A = 60$

$\sum f = 40$

Putting the parameters into the equation, we get

$80 = 60 + \frac{\sum fd}{40}$

$80-60 = \frac{\sum fd}{40}$

$20 = \frac{\sum fd}{40}$

$\sum fd = 20 \times 40$

$\sum fd = 800$

Hence, the value of Σfd is 800

Learn more on Mean here: brainly.com/question/20118982

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2 years ago

Enter the value for x that makes the equation 1/2 (4x+12)+5x=30 true.

8090 [49]

First, distribute the (1/2) into (4x+12) by multiplying them.

The equation becomes:

2x + 6 + 5x = 30

On the left side, combine “like terms” through addition.

7x + 6 = 30

Subtract 6 from both sides:

7x = 24

Finally, get x alone by dividing both sides by 7:

x = 24/7, or if you wanted to round the decimal answer, it’s about 3.429.

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3 years ago

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Step-by-step explanation:

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liberstina [14]

Answer:

D i believe

Step-by-step explanation:

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