All categories

3 years ago

The graph on the left represents a system of equations. How can the solution be located?

Mathematics

2 answers:

Andru [333]3 years ago

8 0

The solution is the point where the lines meet.

The x coordinate is between 0 and 1

The y coordinate is between 2 and 3

The solution is approximately (x,y) = (-0.4, 2.9)

anygoal [31]3 years ago

5 0

Answer:

On a coordinate plane, 2 lines intersect around (0.4, 2.8).

The graph on the left represents a system of equations.

How can the solution be located?

✔ find the intersection

Which integers is the x-coordinate between?

✔ 0 and 1

Which integers is the y-coordinate between?

✔ 2 and 3

What is the solution approximated to the tenths place?

✔ (0.4, 2.8)

Step-by-step explanation:

You might be interested in

The National Institute of Standards and Technology (NIST) supplies "standard materials" whose physical properties are supposed t

Lady bird [3.3K]

Answer:

$10.08-1.64\frac{0.1}{\sqrt{6}}=10.013$

$10.08+1.64\frac{0.1}{\sqrt{6}}=10.147$

So on this case the 90% confidence interval would be given by (10.013;10.147)

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".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma =0.1$ represent the population standard deviation

n represent the sample size

Solution to the problem

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

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

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

The mean calculated for this case is $\bar X=10.08$

Since the Confidence is 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a tabel to find the critical value. The excel command would be: "=-NORM.INV(0.05,0,1)".And we see that $z_{\alpha/2}=1.64$

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

$10.08-1.64\frac{0.1}{\sqrt{6}}=10.013$

$10.08+1.64\frac{0.1}{\sqrt{6}}=10.147$

So on this case the 90% confidence interval would be given by (10.013;10.147)

5 0

3 years ago

In a behavioral field study, my colleagues and I found that teams of three

andreev551 [17]

Answer:

False

Step-by-step explanation:

The given statement is false because behavioral field study deals with the cognitive processes during field study or task.

<u>In the given statement only the physical strength of the students is measured while behavioral field study measures or explores human behavior and how or what techniques are students using to perform the field task.</u>

Hence, the correct option is "False".

6 0

3 years ago

a bicycle wheel has a diameter of 65cm what is the length of one revolution of the wheel PLEASE HELP

Lana71 [14]

AnswerAnswerAnswerAnswer: C = πd = 65π = 204.2 cm

Step-by-step explanation: C = pi*d

where d is the diameter.

First we get the circumference, then we multiply it by the number of revolutions, which is 20:

C = 3.14 * 65

C = 204.1 cm (this is only equal to 1 revolution)

Therefore, total distance travelled in after 20 revolutions is

204.1 * 20 = 4082 cm

7 0

2 years ago

Read 2 more answers

Geometry multiple choice question HELPPP!!!??

Bas_tet [7]

Answer:

24/30

Step-by-step explanation:

5 0

2 years ago

How do you work this problem 2.5÷ 4

lord [1]

Using a calculator can help. You get 0.625, or 5/8.

8 0

3 years ago