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nignag [31]
3 years ago
12

Can someone help me? -2+(-8+9)=

Mathematics
1 answer:
Masteriza [31]3 years ago
3 0

Step-by-step explanation:

-2+(-8+9)

= -2+(1)

= -2+1

= -1

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the height of the triangle is 4cm and the base width is 18 cm and the base length is 18 cm what is the surface area of a square
Gnesinka [82]

Answer:

The surface area is 664 cm²

Step-by-step explanation:

A=a^{2} +2a\sqrt{\frac{a^{2}}{4}  } +h^{2}          Use this equation to find the surface area

A=18^{2} +2(18)\sqrt{\frac{18^{2}}{4}  } +4^{2}   Simplify

A=324 +36\sqrt{\frac{324}{4}  } +16       Simplify

A = 324 + 36√81 + 16         Simplify

A = 324 + 36(9) + 16           Simplify

A = 324 + 324 + 16             Simplify

A = 664 cm²

8 0
3 years ago
(2x/x+3)+(x+3/x-5) in simplest form
olga2289 [7]

Answer:

Below

Step-by-step explanation:

(2x/x+3) + (x+3/x-5)

Transform: 2x(x-5) + (x+3)^2 / (x+3)(x-5)

Remove brackets and expand : 2x^2 - 10x + x^2 + 6x + 9 / x^2 - 5x + 3x - 15

Collect like terms : 3x^2 - 4x + 9 / x^2 - 2x - 15

Final answer: 3x^2 - 4x + 9 / x^2 - 2x - 15

8 0
3 years ago
Which type of quadrilaterals has diagonals that are congruent
Misha Larkins [42]
Squares have them due to all sides and angles being congruent
5 0
4 years ago
Use the properties of addition to simplify 10v – 4s – 6v +8s.
Bumek [7]

We have that Using strictly  the properties of addition to simplify

10v-6v+4s

From the question we are told

Use the properties of addition to simplify 10v – 4s – 6v +8s.

Generally the equation for the  Statement  is mathematically given as

10v – 4s – 6v +8s.

Therefore

WE collect like terms

10v – 4s – 6v +8s.

10v-6v-4s+8s

Therefore Using strictly  the properties of addition to simplify

We have

10v-6v-4s+8s

10v-6v+4s

For more information on this visit

brainly.com/question/23366835

7 0
2 years ago
Look at the shape of the graph what can you predict about the mean and median beverage prices
alexdok [17]

If you read the question, you will see that the requirement is missing. By Googling the question, the complete content could be found here:

brainly.com/question/12108641

The mean price and median price are close together.

Answer: Option 2

<u>Explanation:</u>

The shape of the graph which is shown in the picture is symmetric. Since it is symmetrical in shape, most of the data is clustered together around the center. This center is the median. The mean will be close to the median, since most of the data values are close to this.

The graph shows that the prices of the beverages are some where near and close to each other. The prices are not at extreme ends and this makes the shape of the graph symmetrical. Had there been any kind of extreme ends, then the shape of the graph would not have been the same.

8 0
3 years ago
Read 2 more answers
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