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AfilCa [17]
3 years ago
12

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? Which integers is the x-coordinate between? Which integers is the y-coordinate between? What is the solution approximated to the tenths place?
Mathematics
2 answers:
Nezavi [6.7K]3 years ago
9 0

Answer:

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:

kompoz [17]3 years ago
3 0

Answer:

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:

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4/10 = 2/5 .  and because they have the SAME UNIT (cm)
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(NEED HELP ASAP) What rule defines the function in each of the following graphs?
QveST [7]

Hey there!!

The graph B is not a function as it doesn't pass the vertical line test, as there are two x values repeating.

We do not want value x repeating, if it does, it is not considered to be a function anymore.

Hope my answer helps!

3 0
3 years ago
A commonly used IQ test is scaled to have a mean of 100 and a standard deviation 15. A school counselor was curious about the av
Licemer1 [7]

Answer: (103.74,112.06)

Step-by-step explanation:

The confidence interval for population mean is given by :_

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 50

Sample mean : \overline{x}=107.9

Standard deviation : \sigma=15

Significance level : \alpha: 1-0.95=0.5

Critical value : z_{\alpha/2}=1.96

Then the 95% confidence interval for the student IQ in the school will be :-

107.9\pm (1.96)\dfrac{15}{\sqrt{50}}\\\\\approx107.9\pm0.075\\\\=(107.9-4.16,107.9+4.16)=(103.74,112.06)

Hence, the 95% confidence interval for the student IQ in the school= (103.74,112.06)

4 0
3 years ago
Why do we turn this into a positive number -6 -(3)=
stich3 [128]

When you multiply a negative number by a positive number then the product is always negative.

When you multiply two negative numbers or two positive numbers then the product is always positive.

This is similar to the rule for adding and subtracting: two minus signs become a plus, while a plus and a minus become a minus. In multiplication and division, however, you calculate the result as if there were no minus signs and then look at the signs to determine whether your result is positive or negative. Two quick multiplication examples:

<span><span>3⋅(−4)=−12</span><span>3⋅(−4)=−12</span></span>

3 times 4 equals 12. Since there is one positive and one negative number, the product is negative 12.

<span><span>(−3)⋅(−4)=12</span><span>(−3)⋅(−4)=12</span></span>

Now we have two negative numbers, so the result is positive.

Turning to division, you may recall that you can confirm the answer you get by multiplying the quotient by the denominator. If you answer is correct then the product of these two numbers should be the same as the numerator. For example,

<span><span><span>123</span>=4</span><span><span>123</span>=4</span></span>

In order to check whether 4 is the correct answer, we multiply 3 (the denominator) by 4 (the quotient):

<span><span>3⋅4=12</span><span>3⋅4=12</span></span>

What happens when you divide two negative numbers? For example,

<span><span><span><span>(−12)</span><span>(−3)</span></span>=?</span><span><span><span>(−12)</span><span>(−3)</span></span>=?</span></span>

For the denominator (-3) to become the numerator (-12), you would have to multiply it by 4, therefore the quotient is 4.

So, the quotient of a negative and a positive number is negative and, correspondingly, the quotient of a positive and a negative number is also negative. We can conclude that:

When you divide a negative number by a positive number then the quotient is negative.

When you divide a positive number by a negative number then the quotient is also negative.

When you divide two negative numbers then the quotient is positive.

The same rules hold true for multiplication. and the answer is to put a -6 - -3 =3


5 0
3 years ago
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