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amid [387]
2 years ago
9

How many solutions can be found for the linear equation? 4(x + 5) - 5 = 8x + 18 2

Mathematics
1 answer:
Elena L [17]2 years ago
7 0

Answer:

4x + 20 - 5 = 0 \\ 4x + 15  = 0 \\ 4x =  - 15 \\ x = -   \frac{15}{4}

Step-by-step explanation:

8x + 18 = 0 \\ 8x =  - 18 \\ x =  -  \frac{18}{8}  \\ x =  -  \frac{9}{4}

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Suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally distributed with
worty [1.4K]

Answer:

z

Step-by-step explanation:

Assuming this complete question:

"Suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally distributed with mean \mu =26 kilograms and standard deviation \sigma=4.2 kilograms. Let x be the weight of a fawn in kilograms. Convert the following z interval to a x interval.

X"

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

X \sim N(26,4.2)  

Where \mu=26 and \sigma=4.2

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

We know that the Z scale and the normal distribution are equivalent since the Z scales is a linear transformation of the normal distribution.

We can convert the corresponding z score for x=42.6 like this:

z=\frac{42.6-26}{4.2}=3.95

So then the corresponding z scale would be:

z

7 0
2 years ago
What is the solution to the system of equations graphed below? On a coordinate plane, 2 lines intersect at (2, negative 3). (2,
vlabodo [156]

Answer:

2, -3

Step-by-step explanation:

I think this is right.

Maybe just wait till someone else answers just to makae sure this is exactly the right answer.

8 0
3 years ago
What i thissss pls help
zubka84 [21]

Answer: A

Step-by-step explanation:

5 is in the ones place rather that the tens place.

8 0
2 years ago
Read 2 more answers
Writing an Equation from a Table
Anastasy [175]

The equation of the line will be y = 4x. Then the correct option is A.

<h3>What is the equation of line?</h3>

The equation of line is given as

y = mx + c

Where m is the slope and c is the y-intercept.

Writing an Equation from a Table

A 2-column table with 6 rows. Column 1 is labeled x with entries 8, 12, 16, 20, 24, 28. Column 2 is labeled y with entries 2, 3, 4, 5, 6, 7.

Then at (2, 8) and (3, 12), we have

y – 8 = [(12 – 8) / (3 – 2)] (x – 2)

y – 8 = 4x – 8

     y = 4x

Then the correct option is A.

More about the equation of line link is given below.

brainly.com/question/21511618

#SPJ1

7 0
2 years ago
What is 3 1/2 x r = 28​
AleksandrR [38]

Answer:

r=8

Step-by-step explanation:

you divide 28 by 3 1/2 to get r=8

4 0
3 years ago
Read 2 more answers
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