(9c^2 + 3c + 9) - (9c^2 + 2c + 7)

Answers

Answer 1
Answer:

Answer:

c+2

Step-by-step explanation:

Distribute the Negative Sign:

=9c2+3c+9+−1(9c2+2c+7)

=9c2+3c+9+−1(9c2)+−1(2c)+(−1)(7)

=9c2+3c+9+−9c2+−2c+−7

Combine Like Terms:

=9c2+3c+9+−9c2+−2c+−7

=(9c2+−9c2)+(3c+−2c)+(9+−7)

Answer 2
Answer:

Answer:

c + 2

Step-by-step explanation:

(9c² + 3c + 9) - (9c² + 2c + 7)

9c² + 3c + 9 - 9c² - 2c - 7

9c² + 3c + 9 - 9c² - 2c - 7

c + 2


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Rosa graphs the line y = 3x + 5.then she dilates the line by a factor of 1/5 with (0,7) as the center of dilation .

What is the distance between the points (-4, 7 ) and (2, 7 )

Answers

Answer:

6.

Step-by-step explanation:

Since the y-value is the same, the two points make a horizontal line. You can think of it as a number line, where the first point is at -4 and the second is at 2. So, the distance between -4 and 2 is 6.

Two guy wires from the top of a 200-foot radio antenna are anchored to the ground by two large concrete posts. The antenna is perpendicular to the ground and between the two posts. If the angles of depression from the top of the antenna to each of the posts is 46o and 48o respectively, then the distance between the two posts is:_______

Answers

Answer: 373.22 feet

Step-by-step explanation:

The attached photo contains the diagram illustrating the scenario. 2 right angle triangles ACD and BCD are formed.

The distance between the two posts is AD + BD

To determine AD, we would apply the tangent trigonometric ratio which is expressed as

Tan θ = opposite side/adjacent side

Tan 46 = 200/AD

AD = 200/Tan 46 = 200/1.0355

AD = 193.14

To determine BD, we would also apply the tangent trigonometric ratio. Therefore

Tan 48 = 200/BD

BD = 200/Tan 48 = 200/1.1106

BD = 180.08

Therefore, the distance between the two posts is

193.14 + 180.08 = 373.22 feet

How many grains of sand are there in 6300kg of sand? Give your answer in standard from

Answers

Answer:

5 g

Step-by-step explanation:

Answer:

16,191,000,000

Step-by-step explanation:

1 kg= 2.57 millions grains of sand

2.57 million*6300= 16,191,000,000

A person going to a party was asked to bring 4 different bags of chips. Going to the store, she finds 13 varieties. How many different selections can she make?
(this is a probability question)

Answers

"715" are the different selections she can make.

Given:

Number of different begs,

  • 4

Total number of varieties,

  • 13

So,

Total number of different selection = ¹³C₄

= (13!)/(4!* (13-4)!)

= (13!)/((4!* 9!))

= (13* 12* 11* 10)/(4* 3* 2)

= (17160)/(24)

= 715

Thus the above answer is correct.

Learn more:

brainly.com/question/21125879

Answer:

Step-by-step explanation:

13!/4(13-4)!

13!/4(9)!

Continue simplifying.

The formula for combinations n!/r!(n-r)! pay attention to class next time

What is the best description of the relation in Item 2? a function that is one-to-one a function that is many-to-one a function that is one-to-many a relation that is not a function​

Answers

Answer:

One input(x-value) can only have one output(y-value) in order to be a function.

Step-by-step explanation:

Final answer:

One-to-one functions yield unique outputs for each input. Many-to-one functions can yield the same output for different inputs. The term one-to-many does not typically apply to functions, and a relation is not a function if one input yields multiple outputs. To answer the question specifically about Item 2, additional information or a visual representation is needed.

Explanation:

To determine the type of a function or relation, we need to understand what it means for a function to be one-to-one, many-to-one, one-to-many, or not a function.

A function is one-to-one (also known as injective) if every element of the range corresponds with exactly one element of the domain. In simpler terms, no two different inputs (x-values) yield the same output (y-values).

A function is many-to-one if there are at least two elements in the domain associated with the same value in the range. This means, two or more different inputs (x-values) can yield the same output (y-value).

The term one-to-many typically does not apply to functions in the strictest mathematical sense. Functions by definition associate one, and only one output with each input.

Lastly, a relation is not a function if at least one element in the domain is associated with more than one value in the range. That is, there is atleast one input (x-value) that yields more than one output (y-value).

Without further specific information or visual representation (like a graph) of Item 2, it's difficult to definitively state what type of relation or function it is.

Learn more about Types of Functions here:

brainly.com/question/29999298

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A solid is composed of squares and equilateral triangles. Its net is shown below: The area of each triangle is 16 square units. The surface area of the triangular prism is _____ square units. (Input whole number only)

Answers

Answer:

12 becayse u mulitigigivuvuu