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Vlad1618 [11]
3 years ago
7

Evaluate expressions- if A=4 and B=9 what is the value of the following expression

Mathematics
2 answers:
lys-0071 [83]3 years ago
7 0

Answer:

68

Step-by-step explanation:

just put the value of a and b in the expression and you will get the answer

20/a+7.b is

20/4+7×9

5+63

68

Assoli18 [71]3 years ago
7 0

Answer:

C. 68

Step-by-step explanation:

Fill in your values.

20/ 4 + 7 x 9

Solve using PEMDAS.

5 + 7 x 9

5 + 63

68

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(2x^2-3x+4) ( x^2+5x-7)= \\ \\=2x^2*x^2+2x^2*5x-2x^2*7-3x*x^2-3x*5x+3x*7+4*x^2+4*5x-4*7=\\ \\=2x^4+10x^3-14x^2 -3 x^3-15x^2+21x +4 x^2+20x-28=\\ \\=2x^4+7x^3-25x^2 +41x -28


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How many degrees does the hour hand turn to get from 12:00 to 12:20
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2+2x=45<br><br> Solve for x<br><br> 10 pts
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-2

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