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lutik1710 [3]
3 years ago
8

Please answer the question and provide a solid definition of what an expression is, thank you :)

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
5 0

Answer:

Answers are: 2x - 7, and 2x -7 = 14

Step-by-step explanation:

An expression must have variables must have a coefficient, a number that is multiplied divided added or subtracted by our variable. The variable is a place holder.

So our answers would be 2x - 7, and 2x -7 = 14

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Write each statement as an algebraic expression. The sum of a number c and its square.
Nikitich [7]
A sum means that two numbers are added together. A square means that a number is raised to the second power.

The sum of a number c and its square can be written with this algebraic expression:

c + c^{2}
3 0
3 years ago
Cosx=4/5 what is sin2x cos2x and tan2x
earnstyle [38]

Answer:

-24/5

Step-by-step explanation:

The solution to the problem is as follows:

cscx < 0 means 1/sinx < 0, or sinx < 0.  

sinx = -3/5 because you're dealing with a 3-4-5 triangle, and we established

sinx is negative.  

sin2x = 2sinxcosx = 2*-3/5*4/5 = -24/25  

cos(2x) = cos^2(x) - sin^2(x) = 16/25 - 9/25 = 5/25 = 1/5  

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4 0
3 years ago
Why would an author use brainstorming in the writing process? Choose the correct answer.
ryzh [129]
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3 0
3 years ago
F(x)= -5x+9 ; reflection in the y-axis a.g(x)=5x-9 b.g(x)=5x+9 c.g(x)=9x-5 d.g(x)=5x-5
Sunny_sXe [5.5K]
<h3>Answer: g(x) = 5x+9, second choice</h3>

Explanation:

When we reflect over the vertical y axis, every negative x value becomes positive and vice versa. So we effectively replace x with -x like so

f(x) = -5x+9

f(-x) = -5(-x)+9 ... replace every x with -x

f(-x) = 5x+9

g(x) = 5x+9

A point like (1,4) on f(x) will reflect over to (-1,4) on g(x). If we apply this to every point on f(x), then all of f(x) will reflect to g(x).

7 0
4 years ago
A vertex can represent​
Iteru [2.4K]

Answer:

Vertex typically means a corner or a point where lines meet. hope it helps in someway ig idk

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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