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tamaranim1 [39]
3 years ago
9

Multiply. x2 -5x + 2 x 3x + 2x +3

Mathematics
2 answers:
Novosadov [1.4K]3 years ago
4 0

Answer:3x^4-13x^3-x^2-11x+6

Citrus2011 [14]3 years ago
3 0

Answer: 3

Step-by-step explanation:

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Convert 10 1/2 to fractional notation
Phoenix [80]
10 1/2 =
10/1 + 1/2=
2/2 (10/1) + 1/2=
20/2 + 1/2=
21/2 

3 0
3 years ago
6(3x - 2) + 5(x + 6)
andreyandreev [35.5K]

Answer:

x=3.5

Step-by-step explanation:

1. Multiply

18x-12=5x+30

2.  Move the x's to one side

12x= 42

3. Isolate the variable by dividing

x=3.5

7 0
3 years ago
Find the surface area of a cone if the diameter of its base is 13.5 feet, and it has a slant height of 16.8 feet. Round to the n
Tresset [83]

The diameter is given which is 13.5feet and radius is half of diameter. Therefore radius = 6.75 feet.

Slant height = 16.8 feet

The formula of surface area of cone is

S = \pi *r(r+l) \\ S = \pi*6.75(6.75+16.8) \\ S =\pi*6.75*23.55 = 499.2 ft^2

Correct option is C

5 0
3 years ago
Find the measures of all four angles if 3·(m∠1+m∠3) = m∠2+m∠4.
mixas84 [53]

Answer:

Step-by-step explanation:

m∠1=m∠3

m∠2=m∠4

3*(m∠1+m∠3)=m∠2+m∠4

3*(m∠1+m∠1)=m∠2+m∠2

3×2 m∠1=2 m∠2

m∠2=3 m∠1

now m∠1+m∠2=180°

m∠1+3 m ∠1=180

4 m∠1=180

m∠1=180/4=45°

m∠3=45°

m∠2=180-m∠1=180-45=135°

m∠4=135°

5 0
3 years ago
Need help on this problem
trasher [3.6K]
The answer to the question

3 0
3 years ago
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