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3 years ago

Does the equation x2 - 10x + y2 - 6y = -30 intersect the x-axis?

1 answer:

5 0

Intersecting the x axis means y is 0
plug y=0 in the equation and solve for x to see if there are real solutions
x^2-10x+0+0=-30
x^2-10x+30=0
this cannot be factored, so let's see if b^2-4ac is bigger than 0
10^2-4*1*30=-20
so the solutions for this equation are not real numbers, therefore the answer is no.

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For the function f(x) = -12x + 7, find the

Brut [27]

Answer:

$\large\boxed{x=-\frac{5}{6}}$

Step-by-step explanation:

f(x) is the same value as y. Therefore, y = 17. We can place this into slope intercept form (except with a defined value for y) and solve for x.

Start by subtracting 7 from both sides. Then, divide by -12 to solve for x. Finally, simplify the fraction.

17 = -12x + 7

10 = -12x

-10/12 = x

-5/6 = x

$\large\boxed{x=-\frac{5}{6}}$

7 0

3 years ago

After reading 7/9 of a book, 40 pages are left. Find the total number of pages in the book

dimaraw [331]

Answer:

180 pages

Step-by-step explanation:

let x be the number of pages in the book , then

$\frac{7}{9}$ x + 40 = x ( multiply through by 9 to clear the fraction )

7x + 360 = 9x ( subtract 7x from both sides )

360 = 2x ( divide both sides by 2 )

180 = x

The total number of pages in the book is 180

6 0

3 years ago

Mario invests $1,500 in a savings account that earns 2% interest a year. He also plans to set aside $50 cash a month. x = number

weeeeeb [17]

Step-by-step explanation:

1500*.02*1=30

50*12*1=60

g(x)=50(12x) good

6 0

1 year ago

PLEASE HELP THIS WILL GIVE 50 POINT AND BRAINLIEST！！！！！!

KatRina [158]

Answer:

the asnswer is -67463 to the power of 4

Step-by-step explanation:

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2 years ago

Cierra says that 5/6 times 5/6 equals 25/6 is that true?

Sholpan [36]

Answer:

Step-by-step explanation:

5/6 * 5/6 = .6944

25/6 = 4.1667

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3 years ago