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agasfer [191]
3 years ago
11

Simplify -5(3m2 + 7n2) + 8n2

Mathematics
2 answers:
Blababa [14]3 years ago
6 0

Answer:

\boxed{\red{=  - 3(5 {m}^{2}   + 9 {n}^{2} )}}

Step-by-step explanation:

- 5(3 {m}^{2}  + 7 {n}^{2} ) + 8 {n}^{2}  \\  - 15 {m}^{2}  - 35 {n}^{2}  + 8 {n}^{2}  \\  =  - 15 {m}^{2}  - 27 {n}^{2}  \\  =  - 3(5 {m}^{2}   + 9 {n}^{2} )

son4ous [18]3 years ago
5 0

Answer:

<h3>-15m² - 27n²</h3>

Step-by-step explanation:

-5(3m² + 7n²) + 8n²

Expand brackets.

-15m² + -35n² + 8n²

Combine like terms.

-15m² + -27n²

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How do you find the minimum value of a quadratic function?
aniked [119]

The minimum value of a function is the place where the graph has a vertex at its lowest point.

There are two methods for determining the minimum value of a quadratic equation. Each of them can be useful in determining the minimum.

(1) By plotting graph

We can find the minimum value visually by graphing the equation and finding the minimum point on the graph. The y-value of the vertex of the graph will be the minimum.

(2) By solving equation

The second way to find the minimum value comes when we have the equation y = ax² + bx + c.

If our equation is in the form y = ax^2 + bx + c, you can find the minimum by using the equation min = c - b²/4a.

The first step is to determine whether your equation gives a maximum or minimum. This can be done by looking at the x² term.

If this term is positive, the vertex point will be a minimum; if it is negative, the vertex will be a maximum.

After determining that we actually will have a minimum point, use the equation to find it.

6 0
3 years ago
Somebody help please....
Tems11 [23]

Answer:

4,096

Step-by-step explanation:

It goes like this 4 * -4=-16, 16*4=64, -64*4=256, etc.

You use the sum of the last number but flip the sin to make it opposite like if your some was + make it a negative to get your next product. Hope that made sense!!!!

5 0
3 years ago
PLEASE HELP!! Due today:
irina [24]

Answer:

i would say it will be six

Step-by-step explanation:

because the height is the same the h

8 0
4 years ago
The diagram shows a triangle.<br> 20s<br> 20s<br> 20s<br> What is the value of s?
Darina [25.2K]

Answer: I’m assuming that these are Angle measures. S=3

Step-by-step explanation:

180/3=60

20*3=60

S=3

3 0
3 years ago
John throws a rock straight down with speed 12 m/s from the top of a tower. the rock hits the ground after 2.37 s. what is the h
Amiraneli [1.4K]
12*2.37= 28.44

The tower is 28.44 meters tall.






3 0
3 years ago
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