Solve by factoring by grouping 5k^2-2k-7=9

Answers

Answer 1

Answer: $5k^2-2k-7=9 \n \n 5k^2 - 2k - 7 - 9 = 0 \n \n 5k^2 - 2k - 16 = 0 \n \n 5k^2 + 8k - 10k - 16 = 0 \n \n k(5k + 8) - 2(5k + 8) = 0 \n \n (5k + 8)(k - 2) = 0 \n \n k = - (8)/(5) , 2 \n \n$

The final result is: k = -8/5, 2.

Related Questions

Consider the following system of equations: y = −x + 2 y = 3x + 1 Which description best describes the solution to the system of equations? Line y = −x + 2 intersects line y = 3x + 1. Lines y = −x + 2 and y = 3x + 1 intersect the x-axis. Lines y = −x + 2 and y = 3x + 1 intersect the y-axis. Line y = −x + 2 intersects the origin.
The number of gallons of water in a tank, over a period of x hours is shown in the graph below. How many gallons of water will there be in 10 hours.
After 8 years, ofelia earned $980 in simple interest from a cd into which she initially deposited $7000. what was the annual interest rate of the cd?
Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5?y = x - 1/5 y = x + 1/5 y = 1/5x y = 5x
Help pls and thank u

Fine the equation of the line

Answers

Answer:

x = -3 y = -1

Step-by-step explanation:

The line goes down by 3 and by 1

Simplify the following

Square root 15 / Square root 3

Answers

Answer:

The answer is √5 .

Step-by-step explanation:

Youhavetorationalizethefractioninordertogetridofsurdinthedenorminatorbymultiplying√3tobothnumeratoramddenorminator:

$( √(15) )/( √(3) )$

$= ( √(15) )/( √(3) ) * ( √(3) )/( √(3) )$

$= ( √(15) * √(3) )/( √(3) * √(3) )$

$= ( √(45) )/(3)$

$= ( √(9 * 5) )/(3)$

$= (3 √(5) )/(3)$

$= √(5)$

Jenny wants a total of 12 barbie dolls by the time she is 9 years old.She has 4 barbie dolls. how many more does she need?

Answers

Answer:

she needs 8

Step-by-step explanation:

12-4=8

Describe the translation of the graph of y = x2 that results in the graph of y = (x - 3)2. left 3 units
right 3 units
down 3 units
up 3 units

Answers

Answer:

Shift right by 3 units.

Second option is correct.

Step-by-step explanation:

The parent function is given by $y=x^2$

The translated function is $y=(x-3)^2$

The transformation rule is:

When we subtract some constant "c" to the x values of the function f(x) then the graph will shift right by "c" units. And the transformation function would be f(x-c).

Now, here 3 is subtracted in the x value of the parent function $y=x^2$ to get the function $y=(x-3)^2$

Therefore, the graph of the transformation function would shift right by 3 units.

We can see it in the attached graph as well. The vertex of the parabola $y=x^2$ is at (0,0) and the vertex of the parabola $y=(x-3)^2$ is at (3,0).

It means that graph has shifted 3 units to the right.

Second option is correct.

Right 3 units is right out of the options given

10. The soccer coach purchased 8 pizzas for the end of the season party. Altogether, the soccer team ate 3/4 of the pizzas. How many pizzas did the soccer team eat? *

Answers

Answer:

6 Pizzas

Step-by-Step Expaination:

OK, first I'll start with fractions. 4/4 of 8 is 8. 1/4 of 8 is 2, so 3/4 is 6. So in conclusion, the Soccer team ate 6 pizzas.

Approximately how many miles are in a light-year?a. 6 × 106
b. 6 × 109
c. 6 × 1012
d. 6 × 1015

Answers

1 light year = 5.879 x 10^12
So approximately, the answer is C

Answer:

its C

Step-by-step explanation:

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