3 years ago

Where is the best place to learn spanish for free and become fluent on line

Mathematics

2 answers:

nataly862011 [7]3 years ago

7 0

I would say duolingo. it's an app, not a website though

liraira [26]3 years ago

7 0

Answer:

DUOLINGOOOO

Step-by-step explanation:

keeps you persistent through notifications so turn it on

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Tan^2x+sec^2x=1 for all values of x. <br> true or false?

amid [387]

This is not true.

$\tan^2x+\sec^2x=\dfrac{\sin^2x}{\cos^2x}+\dfrac1{\cos^2x}=\dfrac{1-\cos^2x+1}{\cos^2x}=2\sec^2x-1$

$2\sec^2x-1=1\implies\sec^2x=1\implies\sec x=\pm1\implies x=n\pi$

where is $n$ is any integer. So suppose we pick some value of $x$ other than these, say $x=\dfrac\pi4$ . Then

$\tan^2\dfrac\pi4+\sec^2\dfrac\pi4=1+2=3\neq1$

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3 years ago

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Katie needs to buy food for her pet leopard gecko the cost of the food is $3.79 if katie uses a coupon the costs is reduced to $

LekaFEV [45]

The cost with the coupon is $0.76 less.

3.79 - 3.03

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3 years ago

How do you add fractions and whole numbers together? For example 1/4+2

grigory [225]

Answer:

2.25 or 2 1/4

Step-by-step explanation:

Easy. you add them like regular numbers. 1/4 + 2 = 0.25 + 2 =2.25 and/or 2 1/4

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2 years ago

Brandon and Jerry like to play video games. Brandon has vvv video games, and Jerry has 292929 video games. Together they have a

lianna [129]

Answer:

444,444

Step-by-step explanation:

total amount=737373

jerry=292929

Brandon=unknown

To figure the amount of video games Brandon has, we have to subtract the amount of both he and his friend altogether amount with Jerry's current amount of video games.

737,373-292,929=444,444

So, by subtracting the two, the answer would be 444,444.

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3 years ago

What is the least common denominator of 4 and 10

telo118 [61]

Answer:

Step-by-step explanation:

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