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3 years ago

(y-5)6+15–5y=5 What does the variable represent?

Mathematics

1 answer:

Strike441 [17]3 years ago

8 0

Answer:

2.75

Step-by-step explanation:

(y-5)6+15–5y=5

(y-5+5)6-6+15-15–5y=5-6-15+5

y-5y=-11

-4y/-4=-11/-4

y=2.75

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Rewrite the function by completing the square F(x)=2x^2+3x-2

Lady bird [3.3K]

y = 2 ( x + 3/4 )^2 − 25 8

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2 years ago

Read 2 more answers

34 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 25.9 pounds and a

Vlad1618 [11]

Answer:

24.6 < μ < 27.2

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96\frac{3.8}{\sqrt{34}} = 1.3$

The lower end of the interval is the sample mean subtracted by M. So it is 25.9 - 1.3 = 24.6 pounds.

The upper end of the interval is the sample mean added to M. So it is 25.9 + 1.3 = 27.2 pounds.

So the correct answer is:

24.6 < μ < 27.2

4 0

2 years ago

Eight less then a number is seventy five

Tom [10]

83 is your answer you simply do the oppisite and instesad of subtracting the number you add it to the result being 75

5 0

3 years ago

If two lines are parallel and one has a slope of 8, what is the slope of the other line

tresset_1 [31]

Answer: 8

Parallel lines always have the same slope.

[I attached a picture that might help show you]

The lines do NOT Intersect.

6 0

2 years ago

Louis bought a burger and soda for $8. Kate purchased a slice of pizza and soda for $9. Biff purchased a burger, a slice of pizz

Arte-miy333 [17]

The equation for Louis's purchase is: $x+y=8$

The equation for Kate's purchase is: $y+z=9$

The equation for Biff's purchase is: $x+y+z=13.50$

Step-by-step explanation:

First of all we have to define variables for each item involved in the purchase

Let x represent burger

y represent soda

z be the slice of pizza

Then

"Louis bought a burger and soda for $8"

$x+y=8$

"Kate purchased a slice of pizza and soda for $9"

$y+z=9$

"Biff purchased a burger, a slice of pizza and a soda for $13.50"

$x+y+z=13.50$

The equation for Louis's purchase is: $x+y=8$

The equation for Kate's purchase is: $y+z=9$

The equation for Biff's purchase is: $x+y+z=13.50$

Keywords: Linear Equations, Variables

Learn more about Linear equations at:

#LearnwithBrainly

5 0

3 years ago