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Andreas93 [3]
4 years ago
6

Can someone help me by simplifying the equation (5x-7)(9x^2-4x-8)

Mathematics
1 answer:
Reptile [31]4 years ago
7 0

(5x - 7) * (9x^2 - 4x - 8)

1.) Try using the FOIL method (First*first, outside*outside, inside*inside, last*last):

(5x)(9x^2) + (5x)(-4x) + (5x)(-8) + (-7)(9x^2)

2.) Multiply the bases and add the exponents:

45x^3 - 20x^2 - 40x - 63^2 + 28x + 56

3.) Look for the variables without exponents:

-40x + 28x = 28x

45^3 - 83x^2 - 12x + 56

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Answer:

The value of y = 62°

and x = 50°

Step-by-step explanation:

=> 57° + y + 61° = 180°

=> 118° + y = 180°

=> y = 180° - 118

=> y = 62°

Now ,

x° + y° + 67° = 180° { sum of angles of a triangle is 180° }

=> x° + 62° + 68° = 180°

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2 years ago
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Answer: 43.75

Step-by-step explanation

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3 years ago
PLEASE HELP! Identify the rule for the function table.
fgiga [73]
Hello!

You have to find what the rule is

12/24 = 0.5
6/12 = 0.5
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They multiply x by 0.5

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4 0
4 years ago
What is 40% of 65 (please have a step by step explanation)
NNADVOKAT [17]

Answer:

25.6

Step-by-step explanation:

To work this out you would first divide 65 by 10, which gives you 6.5. This is because by dividing it by 10 you are working out 10%. Then to work out 40% you would multiply 10% which is 6.5 by 4, which gives you 25.6.

1) Divide 65 by 10.

65/10=6.5

2) Multiply 6.5 by 4.

6.5*4=25.6

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3 years ago
Amy and Fraser walk inside a circular lawn. Point O is the center of the lawn, as shown below: A circle is drawn. The center of
Assoli18 [71]

Answer:

Both Amy and Fraser walk distances equal to the radius of the lawn.

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Amy walks from O, the center, to A, along the outside edge, using segment OA.  This is a radius of the circle.

Fraser walks from O, the center, to B, along the outside edge, using segment OB.  This is a radius of the circle.  

Thus the correct answer is that both Amy and Fraser walk distances equal to the radius of the lawn.

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4 years ago
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