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3 years ago

What’s -3x-9+15x need help plzzzz

Mathematics

2 answers:

IrinaK [193]3 years ago

6 0

9 I think tcd66rx7xrx7ff7xg7cg8iggiigv

Nataly [62]3 years ago

3 0

Try the app called Photomath it has helped me a lot

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Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !

victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

$2x^2+18x=20$

$x^2+9x=\frac{20}{2}$

$x^2+9x-10=0$

$ax^2+bx+c=0$

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

$D=b^2-4ac=(9)^2-4(1)(-10)=121$

$x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1$

$x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)$

The solution of the given quadratic equation is 1 and (-10).

5 0

2 years ago

GIVING BRAINLIEST HELP NEEDED

xenn [34]

The volume of the prism given its dimensions is equal to 160 cubic units.

<h3>What is the volume of the prism?</h3>

The given prism is made up of two prisms. The volume of the prism is the volume of the two shapes.

One of the prisms have the dimensions: 4 x 4 x 5.

Volume = 80

The other prism has the dimensions: 8 x 2 x 5.

Volume = 80

Volume of the prism = 80 x 2 = 160 cubic units.

To learn more about rectangular prisms, please check: brainly.com/question/8890358

8 0

1 year ago

Answer in slope intercept form (y = Mx + b)

denpristay [2]

The answer is y= 1x + 12

5 0

2 years ago

21.79 + x = 25<br><br><br> make sure to do a explanation

laiz [17]

Answer:

x= 3.21

Step-by-step explanation:

25- 21.79= 3.21

the equation equals to 25 so you need to find what x is by subtracting the other value

Hope this helps

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2 years ago

What do you know to be true about the values of a and b?

algol [13]

but how can we determine if there is no pic

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2 years ago