3 years ago

HELP immediately please!!! ❤️❤️❤️

Mathematics

2 answers:

natima [27]3 years ago

7 0

No no no no no no non no

shepuryov [24]3 years ago

4 0

Don’t have any idea. Sorry!:(

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The circumference of a sphere was measured to be 74 cm with a possible error of 0.5 cm. (a) Use differentials to estimate the ma

larisa86 [58]

Answer Step-by-step explanation:

Circumference of sphere=74 cm

Error=0.5 cm

a.We know that circumference of sphere= $C=2\pi r$

Using the formula

$74=2\pi r$

$r=\frac{74}{2\pi}=\frac{37}{\pi}$

$C=2\pi r$

Differentiate w.r.t r

$\frac{dC}{dr}=2\pi$

$dC=2\pi dr$

$dr=\frac{dC}{2\pi}=\frac{0.5}{2\pi}$

Surface area of sphere= $S=4\pi r^2$

Maximum area in the surface area= $dS=8\pi rdr$

$dS=8\pi\times \frac{37}{\pi}\times \frac{0.5}{2\pi}=23.5\approx 24 cm^2$

Hence,the maximum area in the surface area=24 square cm

Relative error= $\frac{\Delta S}{S}\approx \frac{dS}{S}$

$\frac{\Delta S}{S}=\frac{8\pi rdr}{4\pi r^2}=2\frac{dr}{r}=2\times \frac{\frac{0.5}{2\pi}}{\frac{37}{\pi}}=2\times \frac{0.5}{2\pi}\times \frac{\pi}{37}=0.014$

Hence, the relative error=0.014

8 0

3 years ago

Can somebody solve this...

LenaWriter [7]

Answer:

J
-12
-16
K
L
(-12, -16)
M
O

Sorry. I cannot really the points and graphs clearly.

I hope I helped you! If my answer is correct, please mark me brainiest. Thanks!

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3 years ago

How many triangles can be constructed with three angles, each measuring 64°?

juin [17]

C. None because the sum of the angles in a triangle is 180 degrees

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4 years ago

4 = 2/3 ( x + - 12 )

hichkok12 [17]

Answer:

18 = x

Step-by-step explanation:

4 = 2/3 ( x + - 12 )

4 = 2/3x - 8

+8 + 8

2/3 2/3

18 = x

Sorry if I'm incorrect...

3 0

3 years ago

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Find a POSITIVE and NEGATIVE co-terminal angle for<br> -19(pie)/8

Leto [7]

0928-210=8 is the answer

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3 years ago