Ask question

Ask question

All categories

3 years ago

14

If the negation is: the bird cannot fly. what is the original statement? the bird has no wings. the bird walks to the store. the

bird can fly.

1 answer:

ella [17]3 years ago

3 0

COME ON U CAN DO THIS BUT GREAT JOB

You might be interested in

Drag each tile to the correct box. Not all tiles will be used.

const2013 [10]

Answer:

Step-by-step explanation:

f(x) = y = 3x/(8 + x) (I am assuming that the 8 + x is the denominator. Please use parentheses in the future if you forgot this. If there are no parentheses, then my solution will not work for you.)

Exchange x and y; that is, replace x by y and y by x simultaneously:

x = 3y/(8 + y).

Then use algebra to solve for y in terms of x:

(8 + y)x = 3y (multiply both sides by the denominator to clear the fraction)

8x + xy = 3y (distribute)

xy − 3y = −8x (rearrange terms with all y's on the left side of the equation)

y(x − 3) = −8x (factor out y as a common factor)

y = −8x/(x − 3) (divide by x − 3)

Finally, replace y by f-1(x):

f-1(x) = −8x/(x − 3).

This is the inverse of f(x). It can be checked by finding f(f-1(x)) and f-1(f(x)), and verifying that both equal x after simplifying.

6 0

3 years ago

2. It costs Edgar $2.65 one way to ride the bus to work. He uses the bus to go to and from work four days per week. He buys a bo

Maurinko [17]

$27

2.65 x 2 (since he has to go both to and from work each day) = $5.30
Add the daily cost of the water bottle (1.45) to make his total cost for one day, which is 6.75
Multiply this number by 4 (because he goes 4 days a week) to get $27 for one week.

6 0

3 years ago

An ice cream shop uses the following ingredients to make 1 sundae.Ingredients AmountIce cream 2 scoops Sprinkles 4 spoonfuls Whi

aleksandrvk [35]

8 Sundaes

Sense its 4 spoonfuls per sundae our equation to find how many sundaes was made looks like this:

32÷4=8

8 0

3 years ago

A market surveyor wishes to know how many energy drinks teenagers drink each week. They want to construct a 85% confidence inter

Gre4nikov [31]

Answer:

$7.3-1.440\frac{1.2}{\sqrt{830}}=7.240$

$7.3+1.440\frac{1.2}{\sqrt{830}}=7.360$

So on this case the 85% confidence interval would be given by (7.2;7.4)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

$\bar X=7.3$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma =1.2$ represent the population standard deviation

n=830 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

Since the Confidence is 0.85 or 85%, the value of $\alpha=0.15$ and $\alpha/2 =0.075$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.075,0,1)".And we see that $z_{\alpha/2}=1.440$

Now we have everything in order to replace into formula (1):

$7.3-1.440\frac{1.2}{\sqrt{830}}=7.240$

$7.3+1.440\frac{1.2}{\sqrt{830}}=7.360$

So on this case the 85% confidence interval would be given by (7.2;7.4)

7 0

3 years ago

Please answer both A and B

Anton [14]

A) -53°C (airplane fuel)
b) butter

5 0

4 years ago

Read 2 more answers