2 years ago

? cuantos es 2X = 8?

Mathematics

1 answer:

Aneli [31]2 years ago

7 0

Answer:

I love algebra anyways

The ans is in the picture with the steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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Write an equation for the direct variation (y varies directly with x) if y=12 when x=4.

Olegator [25]

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3 years ago

What is 5 + 2(3x + 4)+ x?

Sholpan [36]

Answer:

What is 5 + 2(3x + 4)+ x?

the answer is 7x + 13

Step-by-step explanation:

from the quwstion What is 5 + 2(3x + 4)+ x

we aproach the problem using BODMAS

we have;

5 + 6x + 8 + x

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3 years ago

Read 2 more answers

The value of gold in the year 2010 was approximately $1,800. The value of gold increases by approximately 9.5% a year.

Tju [1.3M]

Hope it helps see below

Answer: 1800e^(.95*x)

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2 years ago

A test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. Find the z-score corresponding to the given

Mariulka [41]

Answer:

A. -1.6; not significant

Step-by-step explanation:

The z-score of a data set that is normally distributed with a mean of $\bar x$ and a standard deviation of $\sigma$ , is given by:

$z=\frac{x-\bar x}{\sigma}$ .

From the question, the test score is: $x=48.4$ , the mean is $\bar x=66$ , and the standard deviation is $\sigma =11$ .

We just have to plug these values into the above formula to obtain:

$z=\frac{48.4-66}{11}$ .

This simplifies to: $z=\frac{-17.6}{11}$ .

$z=-1.6$ .

We can see that the z-score falls within two standard deviations of the mean.

Since $-2\le-1.6\le2$ the value is not significant.

The correct answer is A. -1.6; not significant

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3 years ago

Add.910+(−45).Write your answer as a fraction in simplest form

gavmur [86]

-44.09 i dont understand why we must have 20 characters but OK

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3 years ago