3 years ago

Quiero saber sobre Álgebra

1 answer:

6 0

Algebra has variable. Finding the slope and y-intercept.
Algebra tiene variable. Encontrar la pendiente y la intersección con el eje y

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X^2+10x+19=0 complete the square PLEASE EXPLAIN

wlad13 [49]

Answer:

Step-by-step explanation

In the form ax^2+bx+c

a x c should equal two factors of b

However, in this equation

1 x 19 has no factors that = 10

so you must use the Quadratic Formula which is,

x = $\frac{-b+-\sqrt{b^2-4ac} }{2a}$

so the answer should be

x = $\frac{-10+-\sqrt{10^2-4(1)(19)} }{2(1)}$

x = $\frac{-10+-\sqrt{24} }{2}$

x = $\frac{-10+2\sqrt{6} }{2}$ and x = $\frac{-10-2\sqrt{6} }{2}$

8 0

3 years ago

Write the standard form of the equation of a circle with radius 3 and center (11, 3)

Talja [164]

Answer:

x² - 22x + y² - 6y + 121 = 0

Step-by-step explanation:

General Form of Equation

(x - h)² + (y - k)² = r²

Solving

(x - 11)² + (y - 3)² = (3)²
x² - 22x + 121 + y² - 6y + 9 = 9
x² - 22x + y² - 6y + 121 = 0

4 0

2 years ago

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Write the sum of 8x^2 - x + 4 and x - 5 Show all work

tigry1 [53]

okey

you needed the sum or division?

3 0

2 years ago

Carla has already written 10 pages of a novel. she plans to write 15 additional pages per month until she is finished. write and

grin007 [14]

Linear Equation: 15m+10=w
15 pages written for every month for 5 months plus the 10 pages she has already written is equal to the total number of pages written in 5 months.
m= number months written. In this case, it is 5 months.
w= number of pages written in 5 months
15(5)+10=w
75+10=w
85 pages written=w
Carla will have written 85 pages in 5 months.

4 0

3 years ago

What is the exact distance between the point (-2,-1) and the point (6,8)

RUDIKE [14]

The answer is B. Use distance formula...

$d = \sqrt{(6 + 2) {}^{2} + (8 + 1) {}^{2} }$

6 0

3 years ago

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