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3 years ago

THE THING ON THE TOP IS y=4/3x-4 Y=2/3x-6

Mathematics

1 answer:

noname [10]3 years ago

8 0

Answer:

the graphs are difficult to read. The answer is whichever graph has the point (-3,-8) I think option 2.

Step-by-step explanation:

Find where the two equations intersect.

Two equations intersect where they are equal.

(4/3)x-4 = (2/3)x-6

(4/3)x-(2/3)x - 4 = - 6 (subtracted (2/3)x from both sides)

(2/3)x -4 = -6

(2/3)x = -2 (added 4 to both sides)

2x = - 6 (multiplied both sides by 3)

x = - 3 (divided both sides by 2)

At this point we know x is negative so the answer cannot be options 1 or 3.

Let's solve for y plugging x into any of the equations.

y = (2/3)(-3) -6 = -2 - 6 = -8

y = (4/3)(-3) -4 = -4 -4 = -8

So the equations intersect at (x,y)=(-3,-8)

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The question is in the picture above. Please help

kow [346]

Answer:

it is 1

Step-by-step explanation:

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3 years ago

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp

motikmotik

Answer:

The 95% confidence interval for the population mean rating is (5.73, 6.95).

Step-by-step explanation:

We start by calculating the mean and standard deviation of the sample:

$M=\dfrac{1}{n}\sum_{i=1}^n\,x_i\\\\\\M=\dfrac{1}{50}(6+4+6+. . .+6)\\\\\\M=\dfrac{317}{50}\\\\\\M=6.34\\\\\\s=\sqrt{\dfrac{1}{n-1}\sum_{i=1}^n\,(x_i-M)^2}\\\\\\s=\sqrt{\dfrac{1}{49}((6-6.34)^2+(4-6.34)^2+(6-6.34)^2+. . . +(6-6.34)^2)}\\\\\\s=\sqrt{\dfrac{229.22}{49}}\\\\\\s=\sqrt{4.68}=2.16\\\\\\$

We have to calculate a 95% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=6.34.

The sample size is N=50.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

$s_M=\dfrac{s}{\sqrt{N}}=\dfrac{2.16}{\sqrt{50}}=\dfrac{2.16}{7.071}=0.305$

The degrees of freedom for this sample size are:

$df=n-1=50-1=49$

The t-value for a 95% confidence interval and 49 degrees of freedom is t=2.01.

The margin of error (MOE) can be calculated as:

$MOE=t\cdot s_M=2.01 \cdot 0.305=0.61$

Then, the lower and upper bounds of the confidence interval are:

$LL=M-t \cdot s_M = 6.34-0.61=5.73\\\\UL=M+t \cdot s_M = 6.34+0.61=6.95$

The 95% confidence interval for the mean is (5.73, 6.95).

4 0

3 years ago

In 1999. Sara and her brother Xzavier got money when their rich uncle died. They

Hunter-Best [27]

Answer:

$406,300

Step-by-step explanation:

$2,700 + $3,600 = $6,300

$400,000 + $6,300 = $406,300

3 0

3 years ago

HELP PLEASE MATH!! A company is testing tires for wear and tear. A given tire is said to either pass the test (P) or fail the te

Xelga [282]

Answer:

PPF, PFF

Step-by-step explanation:

There are several ways you can list all the possible combinations. A couple of my favorite are a) use a binary counting sequence; b) use a gray code counting sequence.

Using the first method, the binary numbers 000 to 111 can be listed in numerical order as 000, 001, 010, 011, 100, 101, 110, 111. Letting 0=P and 1=F, the ones missing from your list are the ones in italics in my list.

Using the second method, we change the right-most character, then the middle one, and finally the left-most character so there is one change at a time: 000, 001, 011, 010, 110, 111, 101, 100.

After you have a list of all possible combinations, it is a simple matter to compare the given list to the list of possibilities to see which are missing.

5 0

3 years ago

Read 2 more answers

R= 0.75s for s solving for a variable ANSWER PLEASE ASAP

Butoxors [25]

Answer:

S= 1.3r

Step-by-step explanation:

The 3 is underlined because it was suppose to go on top of the 3 but it didn't give me the option but that means infinity of 3

If you need more information you cant tell me hope this helped!

7 0

4 years ago