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Volgvan
2 years ago
14

PageDate#Solve sauare completing method2x^2-9x-5 =0​

Mathematics
1 answer:
pashok25 [27]2 years ago
4 0

Answer:

The roots are 5 and −12

Step-by-step explanation:

Hope this helped have an amazing day!

You might be interested in
Ms. Carey wrote the equation: 3x-7-2/3 (9x-6) = 15 on the board. What is the solution to the equation? Show your work.
Vesnalui [34]

Answer:

x=−6

Step-by-step explanation:

<u>Step 1: Simplify both sides of the equation.</u>

3x−7-2/3(9x−6)=15

3x+−7+−6x+4=15(Distribute)

(3x+−6x)+(−7+4)=15(Combine Like Terms)

−3x+−3=15

−3x−3=15

<u>Step 2: Add 3 to both sides.</u>

−3x−3+3=15+3

−3x=18

<u>Step 3: Divide both sides by -3.</u>

−3x/−3=18/−3

x=−6

5 0
2 years ago
find five solutions of the equation y=20x. select integers for values for x starting with -2 and ending with 2
Nataly_w [17]

Answer:

-440, -4440, -44440, -444440, -4444440

Step-by-step explanation:

First, let's find values for x which start is a -2 and end with a 2.

-22

-222

-2222

-22222

-222222

Now we can find the y value by multiplying each term by 20.

-22 --> -440

-222 --> -4440

-2222 --> -44440

-22222 --> -444440

-222222 --> -4444440

7 0
3 years ago
Graph the function in the image.
il63 [147K]

Answer:

Here is the graph to the intercepts.

Step-by-step explanation:

Graph of (6, 4), (4, 3), (-2, 0)

Hope it helps :)

8 0
3 years ago
Y = -x+5y=−x+5y, equals, minus, x, plus, 5
Serga [27]
The answer is D
Hope this hel
6 0
3 years ago
SHALL GIVE BRAINLIEST ANSWER!! A ​40% solution of fertilizer is to be mixed with an ​80% solution of fertilizer in order to get
sdas [7]

Answer:

20 gallons of the 40% solution, 60 gallons of the 80% solution

Step-by-step explanation:

Let x = the gallons of the 40% solution, and y = the gallons of a 80% solution. The first thing we want to do here is to convert each percentage into decimal form - including the ​70% solution mixture.

40% = 0.40,

80% = 0.80, respectively 70% = 0.70

As you can tell, 0.40 is associated with x gallons, 0.80 is associated with y gallons, and the mixture contains 0.70 * 80 solution, as 0.70 is associated with 80. Therefore we can formulate the following expression,

0.40x + 0.80y = 0.70 * 80

At the same time x + y = 80, as the solution ( mixture ) is present with 80 gallons. Isolating x, x = 80 - y. Let us plug that into our expression, solving for y, following by x gallons.

0.40\left(\:80\:-\:y\:\right)\:+\:0.80y\:=\:0.70\:\cdot \:80

0.4\left(80-y\right)+0.8y=56 ( Multiply either side by 10 )

4\left(80-y\right)+8y=560 ( Expand )

320-4y+8y=560

320+4y=560

4y=240

y = \frac{240}{4} = 60 ( Substitute to solve for x )

x = 80 - y = 80 - 60 = 20

As you can see there are 20 gallons of the 40% solution, and 60 gallons of the 80% solution.

3 0
3 years ago
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