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3 years ago

Which of the following equations is equivalent to y-3x=4 ?

Mathematics

1 answer:

lina2011 [118]3 years ago

7 0

Answer:

y=3x+4

idk what it has to be equivalent to...I just put it in y-intercept form

Step-by-step explanation:

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Help quick plzzz!!!!

Firdavs [7]

Answer:

you would mark at 3/5.

Step-by-step explanation:

because 3/5 divided by 1/10 is 6.

then you would convert that to a decimal then fraction and that would end up being 3/5

7 0

3 years ago

Indicated operation of 2/3 + 3/8

stepladder [879]

Answer:

25/24

Step-by-step explanation:

Hope it Helps

8 0

2 years ago

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Anna11 [10]

Step-by-step explanation:

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3 years ago

Exact value of cos45

Anit [1.1K]

It's a value you should probably memorize:

$\cos45^\circ=\dfrac{\sqrt2}2=\dfrac1{\sqrt2}$

You can derive it using some trigonometric identities, other known values of cosine, and properties of the cosine function. For example, using the double angle identity for cosine:

$\cos^2x=\dfrac{1+\cos2x}2$

If $x=45^\circ$ , then

$\cos^245^\circ=\dfrac{1+\cos90^\circ}2$

and you probably know that $\cos90^\circ=0$ , so

$\cos^245^\circ=\dfrac12$

When we take the square root, we should take the positive root because $\cos x>0$ whenever $0^\circ$ :

$\cos45^\circ=+\sqrt{\dfrac12}\implies\cos45^\circ=\dfrac1{\sqrt2}$

4 0

3 years ago

Marcus mixed 15 cups of vinegar and 6 cups of water to

Fofino [41]

Answer:

The directions for a homemade glass cleaner call for 1 part vinegar to 4 parts water. Mr. Gilbert mixed 2 cups of vinegar with 5 cups of water. Did he use a correct ratio of vinegar to water? Explain.

4 0

2 years ago