All categories

4 years ago

At what value of x do the graphs of the equations below intersect?

Mathematics

2 answers:

uysha [10]4 years ago

4 0

the actual answer to your question is actually x=2

Brums [2.3K]4 years ago

3 0

I think they intersect t the point 2,-2
So from there you can work out the value of x

You might be interested in

In (x+1)- In x=2 ?????

Marta_Voda [28]

Answer:

this needs to be worded different in order to understand it

Step-by-step explanation:

5 0

3 years ago

What is 3 fourths times one half

adell [148]

Answer: 0.375

Step-by-step explanation:

8 0

3 years ago

A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:

marin [14]

Answer:

$Range = 85$

$\sigma = 28.71$

$Interval = [666.78, 781.62]$

Step-by-step explanation:

Given

The data for 25 undergraduates

Solving (a): Range and Standard deviation

The range is:

$Range = Highest - Least$

From the dataset:

$Highest = 772$

$Least = 687$

So:

$Range = Highest - Least$

$Range = 772-687$

$Range = 85$

The standard deviation is:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}$

First, calculate the mean

$\bar x = \frac{769 +691 +............+715}{25}$

$\bar x = \frac{18105}{25}$

$\bar x = 724.2$

So, the standard deviation is:

$\sigma = \sqrt{\frac{(769-724.2)^2 +(691-724.2)^2 +(699-724.2)^2 +(730-724.2)^2 +............+(715-724.2)^2}{25}}$

$\sigma = \sqrt{\frac{20604}{25}}$

$\sigma = \sqrt{824.16}$

$\sigma = 28.71$

Solving (b): The interval of the 95% of the observation.

Using the emperical rule, we have:

$Interval = [\bar x - 2*\sigma, \bar x+ 2*\sigma]$

$Interval = [724.2 - 2*28.71, 724.2 + 2*28.71]$

$Interval = [666.78, 781.62]$

4 0

3 years ago

Which theorem or postulate proves that △ABC and △DEF are similar?

Assoli18 [71]

AA similarity postulate

3 0

3 years ago

Read 2 more answers

You are designing a new container for powdered laundry detergent. You are considering a cylindrical container with a diameter of

Sidana [21]

Basically, you are asked to find the volume of a cylinder with a diameter of 14 inches and a height of 18 inches. The formula for the volume of a cylinder is

V = pi*(r^2)*h

r is just the half of the diameter. In this case, r = 14/2 = 7. Then,

V = pi*(7^2)*18
V = 2771 cubic inches

5 0

4 years ago