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yawa3891 [41]
3 years ago
15

Solve the following system of equations graphically. Click on the graph until the correct one appears.

Mathematics
2 answers:
docker41 [41]3 years ago
4 0

Here's the graphical solution.

... (x, y) = (1, 0)

Mrac [35]3 years ago
4 0

<u>answer:</u> [in the picture] it should from like an x

<u>explanation:</u> first you need to put the equations into slope-intercept.

x + y = 1    | subtract the x and move it over to the right side

y= -x + 1    | now, the first equation is in slope intercept form


x - y = 1   | subtract and move the x to the right side

-y = -x + 1   | divide by negative to all of the terms

y = x - 1  | now, the equation is in slope-intercept form

now you graph your answer

hope this helps :)❤ from peachimin

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Write this ratio as a fraction in simplest form without any units. 28 quarts to 9 gallons You can use the table below to help co
jolli1 [7]

Answer:

  7/9

Step-by-step explanation:

In order to write the fraction without any units (as a pure number), we must have units in the numerator and denominator that are the same. Then the units cancel.

<h3>Convert to gallons</h3>

We are given the conversion ...

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<h3>Ratio</h3>

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Full Question:

The data show systolic and diastolic blood pressure of certain people. Find the regression equation, letting the first variable be the independent (x) variable. Find the best predicted diastolic pressure for a person with a systolic reading of 113. use a significance level of 0.05.

Systolic| 150 129 142 112 134 122 126 120

Diastolic| 88 96 106 80 98 63 95 64

a. What is the regression equation?

^y = __ + __x (Round to two decimal places as needed.)

b. What is the best predicted value?

^y is about __ (Round to one decimal place as needed.)

Answer:

A. yhat = a + bx = -10.64 + 0.75x

B. 74.0

Step-by-step explanation:

A. To find the regression equation here, we apply the formulas and then apply it to find the value of y given value of x:

calculate xbar and ybar which is the average of the variables:

Where n(number of values in x or y)=8

xbar = sum of x/n = 129.375

ybar = sum of y/n = 86.25

to calculate b

b= [Sum x^2 * Sum y - Sum x * Sum x*y] / [N*Sum x^2 - (Sum x)^2]

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To calculate a

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