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Galina-37 [17]
2 years ago
7

What is the simplified expression for 2(x-5)? A. 2x B. - 108 C. 2x-10 D. 2x+5

Mathematics
2 answers:
qwelly [4]2 years ago
4 0

Answer:

c is the answer we get it by multiplying terms

Lemur [1.5K]2 years ago
3 0

Answer:

2x - 10

Step-by-step explanation:

2(x - 5) ← multiply each term in the parenthesis by 2

= 2x - 10

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3 years ago
A building 50 ft high casts a 75-ft shadow. Sarah casts a 6-ft shadow. The triangle formed by the building and its shadow is sim
Rom4ik [11]
Make each known side into a ratio like so...
75/6 
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and 50/x 
(50 is how tall the building is and sarah's height is what needs to be found) 
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75    50
----  -----
 6      x

Do cross products;
50 x 6 = 75 x X
300 = 75x 
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3 years ago
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3 years ago
Part A: The area of a square is (9x2 − 12x + 4) square units. Determine the length of each side of the square by factoring the a
Sladkaya [172]

Answer:

Part A: The length of each side is 3x-2 units long.

Part B: The dimensions are 5x-4 and 5x+4 units long.

Step-by-step explanation:

Part A:

--> 9x^2-12x+4

--> Multiply 9 times 4 to see the factors of that product

--> 9 times4 = 36

Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36

Use the factor 6 and make it negative so -6

add another -6

Keep in mind that it is -6x

--> 9x^2-6x-6x+4

Separate the four terms into two different binomials

--> 9x^2-6x  and -6x+4

Factor the binomials

With 9x^2-6x you can factor a 3x

So it will 3x(3x-2)

Do the same thing with -6x+4

You can factor out a -2

-2(3x-2)

The reason you factor out a -2 and not 2 is because it has to be same so in this case it is (3x-2)

Take the two numbers that you factored and put them to make an expression so (3x-2)

--> (3x-2)(3x-2) or (3x-2)^2

3x-2 is the length of each side so it is 3x-2 units long

Part B:

-->25x^2-16y^2

Use the difference of squares

take the square root of 25x^2

that is 5x

take the square root of 16y^2

that is 4y

write it in this way (5x+4y)(5x-4y)

These are the dimensions of the rectangle

3 0
2 years ago
the school cafeteria served 125.6 liters of milk on Monday and 5.34 more liters of milk on Tuesday than on monday.how many total
UkoKoshka [18]
The total amount will be
  total = (125.6 L) + ((125.6 +5.34) L) = (2*125.6 +5.34) L
  total = 256.54 L
5 0
3 years ago
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