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jarptica [38.1K]
3 years ago
10

Question 4 I need help to understand

Mathematics
2 answers:
blagie [28]3 years ago
7 0
1.\\\sqrt{81}=9\ because\ 9^2=81\\\\\fbox{D.}\\\\2.\\55\cdot9=495\\\\\fbox{A.}\\\\3.\\8^3=8\cdot8\cdot8=512\\\\\fbox{D.}\\\\4.\\4^3=4\times4\times4\\\\\fbox{D.}\\\\5.\\512=8\cdot64\\\\\fbox{A.}\\\\6.\\23^2=23\cdot23=529\\\\\fbox{A.}
Mumz [18]3 years ago
6 0
4 to the power of 3 is 4 multiplied 3 times by itself, so 4x4x4
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Write your answer as a whole number or a decimal
Lynna [10]

Answer:

minutes/mile

minutes=7.5-2.5

=55

55/10

5.5 minutes per mile

5 0
2 years ago
How do I do this?’
Ostrovityanka [42]

Answer:

1,2,3,4,5,6,7,8,9,10,11,12

Step-by-step explanation:

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5 0
3 years ago
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Write a recursive formula for each sequence given or described below.
valentinak56 [21]

Answer:

a_{n} =a_{n-1} +3000 and a₁ =30000 for n = 2,3,4,5,6, ......

Step-by-step explanation:

Doug has joined a job with a starting salary of $30000 per year.  

Hence, if a₁ is the salary of Doug in the first year, then  

a₁ =30000

Now, each year Doug will receive a raise of $3000 in his salary.

Hence, in the 2nd year, his salary(a₂) will become ( a₁ +3000) per year.

Again, in the 3rd year, his salary(a₃) will become ( a₂ +3000) per year.

Therefor, in the similar manner the recursive formula for his salary in each year will be given as a_{n} =a_{n-1} +3000 and a₁ =30000 for n = 2,3,4,5,6, ...... {aₙ is the yearly salary of Doug in the nth year} (Answer)

7 0
3 years ago
For what value of x is (2x^2+8x)/(x+4)(x^2-9) undefined?
irakobra [83]

Answer:

The value at x =3 is undefined for the given expression

Step-by-step explanation:

Given expression is \frac{2x^2+8x}{(x+4)(x^2-9)}

To find for what value of x is undefined in the given expression :

\frac{2x^2+8x}{(x+4)(x^2-9)}=\frac{2x(x+4)}{(x+4)(x^2-9)}

=\frac{2x}{x^2-9}

\frac{2x^2+8x}{(x+4)(x^2-9)}=\frac{2x}{x^2-9}

If we put x=3 in the above expression we get

\frac{2x}{x^2-9)}=\frac{2(3)}{3^2-9}

=\frac{6}{9-9}

=\frac{6}{0}

Therefore \frac{2x^2+8x}{(x+4)(x^2-9)}=\frac{6}{0}

The value at x =3 is undefined for the given expression

7 0
3 years ago
Plz Help ASAP! I will mark Brainliest!
Wewaii [24]
If you have a ruler I can how you a faster why you do this
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3 years ago
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