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Valentin [98]
3 years ago
10

Lesson 7.3 simplifying algebraic expressions

Mathematics
1 answer:
juin [17]3 years ago
8 0

Answer: $19x

Step-by-step explanation:

If she bought 2 racing cars,

= $5x +$5x  = $10x (Because one car is 5x)

And if she bought 3 motor cycles,

= $3x + $3x $3x = $9x

Now we get our total amount = $10x + $9x = $19x

Hope I could help! :)


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I need help solving this step by step please.
babunello [35]

Answer:

Yes, i believe that the generalization about the measure of a point angle of a star polygon is true.

First we find sum of interior angle of an n-sided star polygon.

number of triangle in a polygon = n - 2

sum of interior angle of a triangle = 180°

sum of interior angle of an n-sided star polygon = ( n - 2 ) × 180°

To find measure of a point angle, we use:

\frac{|n-2(d)|}{n} × 180°                                                            

To find a point angle we eliminate density by multiplying d by 2  in the formula for finding number of triangle, divide the whole by total number of sides and then multiply by the sum of interior angle of triangle(180°).  

Since all the angle of a regular star polygon are equal, we can calculate each pointy interior angle of a regular star polygon using the formula given below:

\frac{|n-2(d)|}{n} × 180°    

8 0
4 years ago
Sin 2x=
loris [4]

Answer:

A,C

Step-by-step explanation:

sin 2x=sin (x+x)=sinx cos x+cos x sin x=2 sin x cos x

or =2 cos x sin x

[sinx cox=cos x sin x ]

6 0
3 years ago
8 5/12 x 3 6/13 as a fraction please
Olin [163]

Answer:

29 7/52

Step-by-step explanation:

5 0
3 years ago
A movie theater is located on a map of a city represented by a coordinate plane. The location of the movie theater is at (−4, 2)
Rom4ik [11]

Answer:

A. 11/5

Step-by-step explanation:

48/40 = 1 8/40

1 8/40 Simplify to 1 1/5

Hope this helps!

4 0
4 years ago
Both cases?
pishuonlain [190]

Answer:16.7 percent that what I got

Step-by-step explanation:

8 0
3 years ago
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