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3 years ago

PLEASEE HELP ITS TIMED

Mathematics

1 answer:

Grace [21]3 years ago

5 0

The algebraic expression that is a polynomial is B) -6x^3+x^2-sqrt5

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123g is rounded to nearest Whole. Write down the maximum possible mass it could have been.

siniylev [52]

It is rounded to 100 grams

122.5g ≤ mass < 123.5g For calculation purposes a maximum value of 123.5 grams can be used.

6 0

3 years ago

Find the limit (enter 'DNE' if the limit does not exist)

vaieri [72.5K]

Answer:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\sqrt{-2x^2-6y^2+1}+1\right)=2$

Step-by-step explanation:

We need to first simplify the expression using rationalization(i.e. if a square root term exists in the denominator, then multiply and divide the whole expression by the denominator(but the change the sign of its middle term))

here, we need to find:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\dfrac{-2x^2-6y^2}{\sqrt{-2x^2-6y^2+1}-1}\right)$

first we'll rationalize our expression:

$\dfrac{-2x^2-6y^2}{\sqrt{-2x^2-6y^2+1}-1}\left(\dfrac{\sqrt{-2x^2-6y^2+1}+1}{\sqrt{-2x^2-6y^2+1}+1}\right)$

$\dfrac{-(2x^2+6y^2)(\sqrt{-2x^2-6y^2+1}+1)}{(\sqrt{-2x^2-6y^2+1}+1)^2-(1)^2}$

$\dfrac{-(2x^2+6y^2)(\sqrt{-2x^2-6y^2+1}+1)}{-2x^2-6y^2+1-1}$

$\dfrac{-(2x^2+6y^2)(\sqrt{-2x^2-6y^2+1}+1)}{-(2x^2+6y^2)}$

$\sqrt{-2x^2-6y^2+1}+1$

this is our simplified expression, now we can apply our limits:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\sqrt{-2x^2-6y^2+1}+1\right)$

$\sqrt{-2(0)^2-6(0)^2+1}+1$

$1+1$

$2$

the limit does exists and it is 2.

5 0

3 years ago

What is 3/4+.06? Please help I would really appreciate it thanks!

e-lub [12.9K]

3/4 =0.75
0.75+0.06=0.81

4 0

3 years ago

Read 2 more answers

4 sisters love barrettes. they have a value pack that contains 92 barrettes. how many barrettes can each sister have if they sha

oee [108]

Answer:

Step-by-step explanation:

92÷4=23

There are a total of 92 barrettes and 4 sisters so you divide the total amount of barrettes with the total amount of people present.

6 0

4 years ago

Read 2 more answers

Skip count by twos.<br> 30,_ _ _ _ _ _ _ _ _,50.

Vadim26 [7]

30,32,34,36,38,40,42,44,46,48,50

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3 years ago