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Afina-wow [57]
1 year ago
10

(-4^-2) (49^-1/2) Evaluate the expression

Mathematics
1 answer:
Marizza181 [45]1 year ago
5 0

Answer:

-1/112

Step-by-step explanation:

-4^{-2}=\frac{1}{-4^2}=-\frac{1}{16} \\ \\ 49^{-1/2}=\frac{1}{49^{1/2}}=\frac{1}{7} \\ \\ (-1/16)(1/7)=-1/112

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Find the inverse of the function f(x) = (x - 4) 2 - 5 if x ≥ 4.
Serggg [28]
Same here, we do a quick switcharoo on the variables first,

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\\\\\\
x+5=(y-4)^2\implies \pm\sqrt{x+5}=y-4\implies \pm\sqrt{x+5}+4=y
6 0
3 years ago
What is 2 gallons minus 5 quarts
MariettaO [177]
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In two gallons would be 8 quarts.

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6 0
3 years ago
Elvie can type 4,200 words in 30 minutes givr the ratio of the time in minutes to the number of words
defon

Answer:

1 : 140

Step-by-step explanation:

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4 0
2 years ago
What is the solution of the system? Use the substitution method.
cricket20 [7]
Start by isolating one of the variables
x=-4y+2
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3(-4y+2)+2y=11
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Sub the y value into the x formula you created.
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x=2+2
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Hope this helps :)
8 0
3 years ago
A students work to simplify a radical is shown below. Select the statemmebt which best applies to rhe sample mathematical work
Alik [6]

Answer:

D. The work shown above is correct, and y^5\sqrt[4]{y^3} may not be simplified further.

Step-by-step explanation:

If you add all the exponents of y in first line then we get

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Which is same as the exponent in original problem.

So first line is good.

Since it is 4th root so each y^4 will turn into y when it moves out of the radical so final answer is correct.

Hence correct choice is "D. The work shown above is correct, and y^5\sqrt[4]{y^3} may not be simplified further." is the correct answer.

8 0
3 years ago
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