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9966 [12]
3 years ago
6

Sam solved the equation 2(x - 4) = 4x + 3x + 12. His work is shown.

Mathematics
1 answer:
Paha777 [63]3 years ago
8 0
Step 2 because he/she took out the parentheses when he/she wasn’t supposed to!
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Geometry. Very basic.
AveGali [126]

Answer:

A)10.25 cm ; B)5 square cm  

Step-by-step explanation:

A)

Formula:

p=(a+b+c)         [p= perimeter ;  a,b , and c are the side lengths.]

∴The perimeter of the triangle =(4+2.75+3.5) cm  

                                                =10.25 cm

B)

Formula:

A = 1/2 . b .h    [A=area ; b= base ; h= height]

∴The area of the triangle = (1/2 . 4 . 2.5) square cm    [b=4 ; h=2.5]

                                         =5 square cm  

6 0
2 years ago
Trigonometry find the missing side​
Katarina [22]

Step-by-step explanation:

griminology is one of part of body

5 0
2 years ago
We want to find the zeros of this polynomial:
fredd [130]

Answer:

x = -3 and x = -3/2

Step-by-step explanation:

After writing down the polynomial, split it; put a line between 3x^2 and -18x. Look and 2x^3 + 3x^2 and -18x - 27 separately and factor them both:

p(x) = 2x^3 + 3x^2 <u>- 18x -27</u>

p(x) = x^2(2x+3) <u>-9(2x+3)</u>

Now notice how x^2 and -9 have the same factor (2x+3). That means x^2 and -9 can go together:

p(x) = (x^2 - 9)(2x+3)

Factor it once more because there's a difference of squares:

p(x) = (x+3)(x-3)(2x+3)

Now just plug in whatever makes the each bracket equal 0:

x = -3, x = 3, and x = -3/2

Those are your zeros.

8 0
3 years ago
Alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painti
Svetach [21]
The answer of the question is 140. hope i help you ;)

8 0
3 years ago
Read 2 more answers
Zach's movie collection contains 8 movies, including 4 dramas. What is the probability that a randomly selected movie will be a
ZanzabumX [31]

Answer:

P(drama) = 1/2 or 50%

Step-by-step explanation:

The possibility of the selected movie to be a drama is 4/8, or 1/2, or also can be written as 50% or 0.5

Hope it helps :)

8 0
2 years ago
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