All categories

3 years ago

Plz help!!!!!!!!!!!!!

Mathematics

2 answers:

vaieri [72.5K]3 years ago

6 0

Answer: The correct answer is -2,5/2 which is the last answer.

Step-by-step explanation:

* Hopefully the work below helps:)Mark me the brainliest:)!!

Vera_Pavlovna [14]3 years ago

4 0

Answer: $\bold{\{-2, \dfrac{5}{2}\}}$

Step-by-step explanation:

2x² - x - 10 = 0

Replace -x with 4x - 5x and factor using Grouping Method:

2x² + 4x -5x - 10 = 0

2x(x + 2) -5(x + 2) = 0

(2x - 5) (x + 2) = 0

2x - 5 = 0 and x + 2 = 0

2x = 5 and x = -2

x = 5/2

You might be interested in

4x - 3y = 12 4x - 5y = -4 Solve using Elimination

mr_godi [17]

Answer:

${ \rm{4x - 3y = 12 - - - \{eqn(a) \}}} \\ { \rm{4x - 5y = - 4 - - - \{eqn(b) \}}}$

• subtract eqn(b) from eqn(a);

${ \underline{ \rm{ - \binom{4x - 3y = 12}{4x - 5y = - 4} }}} \\ { \rm{0x + 2y = 16}} \\ \\ { \rm{2y = 16}} \\ \\ { \boxed{ \tt{ \: \: y = 8 \: \: }}} \\$

• find x :

${ \rm{4x - 3y = 12}} \\ { \rm{4x - 3(8) = 12}} \\ { \rm{4x = 36}} \\ \\ { \boxed{ \tt{ \: \: x = 9 \: \: }}}$

8 0

3 years ago

Read 2 more answers

The chapter is 8pages long. kosta read 1/4 of the chapter aloud.then christina read three pages to the class. How many pages hav

pshichka [43]

Number of pages that the chapter has = 8
Number of pages of the chapter that Kosta read = (1/4) * 8
   = 1 * 2
   = 2
The number of pages of the chapter read by Christina = 3
Then
The total number of pages of the
chapter read by both of them = 2 + 3
      = 5
So the total number of pages of the chapter that has been read by Kosta and Christina is 5. I hope the procedure is clear enough for you to understand.

8 0

3 years ago

The random numbers below represent 10 trials of a simulation.

satela [25.4K]

Answer:1/10

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

PLEASE HELP!!! ILL GIVE BRAINLIEST what is the function rule is slope

sergey [27]

Answer:

here!

Step-by-step explanation:

How to write a function rule using the concept of slope. Let us do this for example #3. The goal is use the equation y = mx + b. y = 4x + b. Use (1,6) to find b. 6 = 4 + b.

8 0

3 years ago

Solve the equation for y: -3y - 2 = 10

slavikrds [6]

Answer y=-4

Because it's like you do if backwards

6 0

3 years ago