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3 years ago

Do you think a negative number raised to an even power will be positive or negative? Explain.

Mathematics

1 answer:

Tanya [424]3 years ago

4 0

Answer:

A negative number taken to an even power gives a positive result (because the pairs of negatives cancel), and a negative number taken to an odd power gives a negative result (because, after cancelling, there will be one minus sign left over).

Step-by-step explanation:

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Decimals from least to greatest please help put in order. 2.2, 2.15, 2.2012, 2.501

Ivan

Answer: 2.15, 2.2, 2.2012, 2.501

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3 years ago

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Pls help me solve this question, also include step by step calculation ya. Thks

sp2606 [1]

$\displaystyle\\Answer:\ x=\sqrt{2}\ \ \ \ \ x=-\sqrt{2}\ \ \ \ \ x=\frac{ln5}{2}$

Step-by-step explanation:

$5x^2-x^2e^{2x}+2e^{2x}=10$

$Let:\ x^2=t \ \ \ \ \ e^{2x}=v\\Hence,\\5t-tv+2v^2=10\\5t-tv+2v^2-10=10-10\\5t-tv-10+2v^2=0\\t(5-v)-2(5-v)=0\\(5-v)(t-2)=0\\5-v=0\\5-v+v=0+v\\5=v\\5=e^{2x}$

Prologarithmize both parts of the equation:

$ln5=lne^{2x}\\ln5=2x*lne\\ln5=2x*1\\ln5=2x\\$

Divide both parts of the equation by 2:

$\displaystyle\\x=\frac{ln5}{2}$

$t-2=0\\t-2+2=0+2\\t=2\\x^2=2\\x=\sqrt{2} \\x=-\sqrt{2}$

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1 year ago

PLEASE HELP ME !!!!!!!

Kruka [31]

Answer:

63*42=2646

22*22=484

Area of Shaded Gray portion=2646-484=2162

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2 years ago

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Kirk is uploading a large video file to a video sharing website. After 9 minutes, 17% of the video file has been uploaded. If th

Hatshy [7]

Answer:

53 minutes

Step-by-step explanation:

Let x be the time required for a full video upload. This would have the unit of (minutes/full upload). Since the upload rate is constant, we can write:

(0.17)*(x) = 9 minutes

This equation states that 17% of the full upload time is 9 minutes.

Solve for x:

x = (9 minutes)/(0.17)

x = 52.9 minutes or 53 minutes with 2 sig figs

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3 years ago

for her cell phone plan ,Heather pays $30 per month plus $0.05 per text.She wants to keep her bill under $60 per month.Which ine

Vikentia [17]

60=30+0.05t
-30 -30
--------------------
30=0.05t
--- ------
0.05 0.05
-----------------
600=t
600 texts

HOPE THIS HELPS

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3 years ago