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Elena L [17]
3 years ago
6

Help !! can somebody please help me doing a test need answers ASAP

Mathematics
1 answer:
MakcuM [25]3 years ago
5 0

Answer:

look at this image . It Makes clear about answer

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NEED HELP ASAP (RADICALS)
worty [1.4K]
It is obvious that the radicals with negative sign tends to be less than those that are positive. So from there you already know a basic order. Now to be sure, you can use a calculator or just solve by squaring the whole number to find the radical form.
8 0
3 years ago
If 3x^2 + y^2 = 7 then evaluate d^2y/dx^2 when x = 1 and y = 2. Round your answer to 2 decimal places. Use the hyphen symbol, -,
S_A_V [24]
Taking y=y(x) and differentiating both sides with respect to x yields

\dfrac{\mathrm d}{\mathrm dx}\bigg[3x^2+y^2\bigg]=\dfrac{\mathrm d}{\mathrm dx}\bigg[7\bigg]\implies 6x+2y\dfrac{\mathrm dy}{\mathrm dx}=0

Solving for the first derivative, we have

\dfrac{\mathrm dy}{\mathrm dx}=-\dfrac{3x}y

Differentiating again gives

\dfrac{\mathrm d}{\mathrm dx}\bigg[6x+2y\dfrac{\mathrm dy}{\mathrm dx}\bigg]=\dfrac{\mathrm d}{\mathrm dx}\bigg[0\bigg]\implies 6+2\left(\dfrac{\mathrm dy}{\mathrm dx}\right)^2+2y\dfrac{\mathrm d^2y}{\mathrm dx^2}=0

Solving for the second derivative, we have

\dfrac{\mathrm d^2y}{\mathrm dx^2}=-\dfrac{3+\left(\frac{\mathrm dy}{\mathrm dx}\right)^2}y=-\dfrac{3+\frac{9x^2}{y^2}}y=-\dfrac{3y^2+9x^2}{y^3}

Now, when x=1 and y=2, we have

\dfrac{\mathrm d^2y}{\mathrm dx^2}\bigg|_{x=1,y=2}=-\dfrac{3\cdot2^2+9\cdot1^2}{2^3}=\dfrac{21}8\approx2.63
3 0
3 years ago
You sell the shoes pictured during your 6-hour shift. The prices are:
Aleks [24]

Answer:

6 \times 12.5 = 75

The total price in shoe sales equals $709.96

10% of $709.96 is $71 after rounding up.

$71 plus $75=$146

answer-$146

5 0
3 years ago
Joey is staking out a spot for a rectangular pen he is building for his new pig. He has three stakes already plotted on the coor
andreev551 [17]

Answer:2-6

Step-by-step explanation:

36

6 0
3 years ago
Read 2 more answers
Plz help brainiest to whoever right
nirvana33 [79]

Answer:

X=11

m<wxz= 23

Step-by-step explanation:

hope this helps branliest please

3 0
2 years ago
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