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4 years ago

Evaluate y=3x for x=2

Mathematics

2 answers:

tankabanditka [31]4 years ago

4 0

Answer:

y = 6

Step-by-step explanation:

When a question asks you to evaluate y = ___ for x = n (n is any real number), it is asking you to find what y is when x = n.

For this question, we have the function y = 3x. We are trying to find that y is when x = 2. To do this, we can plug in 2 for x and solve for y.

y = 3(2)

Simplify

y = 6

The answer is y = 6.

I hope this helps. :)

Helen [10]4 years ago

3 0

Answer:

Y=6

Step-by-step explanation:

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Evgen [1.6K]

Answer:

$\displaystyle 8$

Step-by-step explanation:

we would like to compute the following limit

$\displaystyle \lim_{x \to 16} \left( \frac{x - 16}{ \sqrt{x} - 4} \right)$

if we substitute 16 directly we'd end up

$\displaystyle = \frac{16 - 16}{ \sqrt{16} - 4}$

$\displaystyle = \frac{0}{ 0}$

which isn't a good answer now notice that we have a square root on the denominator so we can rationalise the denominator to do so multiply the expression by √x+4/√x+4 which yields:

$\displaystyle \lim_{x \to 16} \left( \frac{x - 16}{ \sqrt{x} - 4} \times \frac{ \sqrt{x} + 4 }{ \sqrt{x} + 4 } \right)$

simplify which yields:

$\displaystyle \lim_{x \to 16} \left( \frac{(x - 16)( \sqrt{x} + 4)}{ x - 16} \right)$

we can reduce fraction so that yields:

$\displaystyle \lim_{x \to 16} \left( \frac{ \cancel{(x - 16)}( \sqrt{x} + 4)}{ \cancel{x - 16} } \right)$

$\displaystyle \lim _{x \to 16} \left( \sqrt{x } + 4\right)$

now it's safe enough to substitute 16 thus

substitute:

$\displaystyle = \sqrt{16} + 4$

simplify square root:

$\displaystyle = 4 + 4$

simplify addition:

$\displaystyle = 8$

hence,

$\displaystyle \lim_{x \to 16} \left( \frac{x - 16}{ \sqrt{x} - 4} \right) = 8$

6 0

3 years ago

What does 6÷3/4 equal

alex41 [277]

Answer:

Step-by-step explanation:

When you divide by a fraction, you can also say that you are multiplying by the reciprocal.

So $6/\frac{3}{4}=6*\frac{4}{3}$

$6=\frac{6}{1}$

$\frac{6}{1}*\frac{4}{3}=\frac{24}{3}=8$

4 0

4 years ago

Read 2 more answers

Which set of sides would NOT make a triangle?

trapecia [35]

Answer:

the 3rd one

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Jacob lived to be 147 years old. the time he lived and worked in Haran was approximately 14% of his total years. How many years

Rzqust [24]

Answer:

20.58 rounded to 21 years

Step-by-step explanation:

147 *14%=

147*0.14=

20.58 ROUND TO 21 years

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3 years ago

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3 years ago