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Andreyy89
3 years ago
7

Without calculating the sum, determine whether each answer will be rational or irrational.

Mathematics
1 answer:
Ray Of Light [21]3 years ago
7 0

Answer:

Irrational

rational

Step-by-step explanation:

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Hello please help with my question, I will give brainlyest!
lilavasa [31]

No, John is incorrect.

<h3>Correct work shown:</h3>

\sf x^2 - 6x - 7 = 0

\sf x^2 - 6x = 7

\sf x^2 - 6x  + 9= 7 + 9

\sf (x-3)^2= 16

\sf x-3=\pm \sqrt{16}

\sf x-3= \pm 4

\sf x= + 4 + 3 \quad or \quad x = -4 + 3

\sf x= 7 \quad or \quad x = -1

The correct answer should be x = 7 or x = -1

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2 years ago
Sarah babysits her neighbor's son to make money. Her earnings can be represented by the equation
tiny-mole [99]

Answer:

ummmmmm i do not know

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is an equation of the line that passes through the point (-7, -6) and is parallel to the line x-y=7?
Alex_Xolod [135]

Answer:

Step-by-step explanation:

For two lines to be parallel their slopes must be equal. For two lines to be perpendicular their slopes must be the negative reciprocal of each other.

Step 1 Find the slope of the equation.

Put it into the slope-intercept form. y = mx + b.  

For x-y = 7, move the x to the left; therefore subtract the x from both sides. this leaves you  -y = -x + 7

Then, divide both sides by -1 to get a positive y.  -y/-1 = (-x + 7)/-1

This leaves y = x - 7  The slope(m) for this equation is m = 1

The other equation must also have a slope of 1 or m=1 for the lines to be parallel.

Use the point given to you (-7, -6) and substitute for (x, y)

The slope-intercept form y = mx + b can once again be used.

x = -7, y =-6, and slope or m = 1

Therefore,  y = mx + b substituted will be -6 = (1)(-7) + b; now, solve for b which is the y intercept

-6 = -7 + b add 7 to both sides -6 +7 = -7 + b +7 ; therefore, b = 1

Now you know the slope(m) which is equal to 1 and the y-intercept(b) which is equal to 1.

Finally, substitute the m and b in the slope-intercept form

            y = (1)x + 1 or y = x +1

5 0
3 years ago
I need the side of length x and the answer should be the nearest hundredth
Firdavs [7]

Answer:

x = 15.49

Step-by-step explanation:

a2+b2=c2

11^2+x^2=19^2

121 =x^2 = 361

x^2 = 240

x = 15.49

7 0
2 years ago
Find x. Round to the nearest tenth if necessary.​
Brilliant_brown [7]

Answer:

Step-by-step explanation:

14 times 14 then do 15 times 15 then add both answers up and take that answer and square route it

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2 years ago
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