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Alla [95]
3 years ago
5

Multiply and simplify: (2x - 5)(3x2 5x - 7).

Mathematics
2 answers:
Nady [450]3 years ago
5 0
After multiplication, the equation would be :

6x2 + 10x2 - 14x - 15x2 - 25x + 35

= x2 - 29x + 35
Nezavi [6.7K]3 years ago
5 0

Answer: 6x^3 - 5x^2 - 39x + 35

Step-by-step explanation: Multiply each term in the first set of parentheses by each term in the second set of parentheses. Multiply the coefficients and add the exponents. 2x(3x2) + 2x(5x) + 2x(-7) -5(3x2) - 5(5x) - 5(-7) = 6x3 + 10x2 - 14x - 15x2 - 25x + 35. Combine like terms. The correct answer is 6x^3 - 5x^2 - 39x + 35 .

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Vikentia [17]

The formula of an area of a circle:

A=\pi r^2

r - a radius

We have r = 14m. Substitute:

A=\pi\cdot14^2=196\pi\ m^2

If you want an approximate area, you can accept \pi\approx3.14

Then:

A\approx196\cdot3.14=615.44\ m^2

7 0
3 years ago
Zoey is designing a jewelry box in the shape of a rectangular prism. The base is 6 inches by 5 inches and the height is 4 inches
makvit [3.9K]

Answer:

148 square inches

Step-by-step explanation:

Step 1: finding the area of the base (upper base plus lower base)

        2( L x W).                  

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Step 2: finding the area of first 2 sides

     2 ( l x w)

   2 ( 5in x 4in)

  2 ( 20 square inches.)

     40 square inches

step 3: finding the area of the last 2 sides

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 2(24 square inches.)

  48 square inches

step 4: combine all the answers.

60 square inches. + 40 square inches. + 48 square inches = 148 square inches

7 0
3 years ago
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tamaranim1 [39]
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Answer:

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Step-by-step explanation:

Put your question DB and I'll gladly answer!

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