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Artyom0805 [142]
3 years ago
15

Please help! first is brainliest!

Mathematics
1 answer:
Trava [24]3 years ago
7 0

Answer:

compound event and independent event

Step-by-step explanation:

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I need the answer fore both plsss
grandymaker [24]

Answer:  6i) 6a² - 2ab

               6ii) -2b³

               6iii) b³ + 7b² - 49b

<u>Step-by-step explanation:</u>

6i)   (a + b)(5a - 3b)             +    (a - 3b)(a - b)

=    5a² - 3ab + 5ab - 3b²   +    a² - ab - 3ab + 3b²

=    5a² + 2ab - 3b²             +   a² - 4ab + 3b²

= 6a² - 2ab

6ii)    (a - b)(a² + b² + ab)              -  (a + b)(a² + b² - ab)

=   a³ + ab² + a²b - ab² - a²b - b³ -  (a³ + ab² - a²b -ab² + a²b + b³)

=   a³ - b³                                      -  (a³ + b³)

=   a³ - b³                                      - a³ - b³

= -2b³

6iii) (b² - 49)(b + 7)             +     343

=     b³ + 7b² - 49b - 343    +    343

=     b³ + 7b² - 49b

You are allowed a maximum of 3 questions.

Please post #7 on a different question.

5 0
3 years ago
The perimeter of an equilateral triangle is 83 inches. If the length of each side is (2x -3), find the value of x.
Minchanka [31]

Answer:

x = 15 \frac{1}{3}

Step-by-step explanation:

Equilateral triangles have 3 equal sides.

Thus, perimeter of triangle

= 3(2x -3)

= 3(2x) +3(-3) <em>(</em><em>expand</em><em>)</em>

= (6x -9) inches

Given that the perimeter is 83 inches,

6x -9= 83

6x= 83 +9 <em>(</em><em>+</em><em>9</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

6x= 92

x = 15 \frac{1}{3}

6 0
2 years ago
What is the slope of the line graphed on the coordinate plane?
maria [59]
Rise: 8 Run: -2

8/2

Have a nice day!
7 0
3 years ago
Read 2 more answers
Help geometry question
Sauron [17]

Answer:

x=10

Step-by-step explanation:

43 and (4x+3) are vertical angles, which mean they are equal

so, 43=(4x+3)

  43-3=(4x+3-3)

     40=(4x)

  40/4=4x/4

      10=x

6 0
3 years ago
I will give branliest pls help
Ulleksa [173]

Due to the fact that one outside angle of a triangle is equal to the sum of its other two angles, all of its angles add up to 180 degrees.

In other words, the third angle must be added to the other two angles in the triangle (the ones that add up to generate the outer angle) to form a 180-degree angle.

How do you determine if a triangle's angles are 180 degrees?

How Can I Determine a 180 Degree Angle?

  • Create a straight line to represent the angle's arm.
  • At one end of the line, place a dot.
  • Now position the protractor's center above the dot or vertex and line up the protractor's baseline with the angle's arm.
  • Put a dot where the angle is 180 degrees.

To learn more about Angles refer to:

brainly.com/question/25716982

#SPJ13

6 0
1 year ago
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