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3 years ago

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Mathematics

2 answers:

Pachacha [2.7K]3 years ago

4 0

The answer is C no time to explain

Alika [10]3 years ago

3 0

Answer:

1 inch = 80 miles

Step-by-step explanation:

4 and three quarters = 4.75

380 divided by 4.75 = 80

Double check and multiply 4.75x80

4.75 x 80 = 380

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Find r if 0=pi/6 rad sector 64m^2

kap26 [50]

Given:

Area of a sector = 64 m²

The central angle is $\theta=\dfrac{\pi}{6}$ .

To find:

The radius or the value of r.

Solution:

Area of a sector is:

$A=\dfrac{1}{2}r^2\theta$

Where, r is the radius of the circle and $\theta$ is the central angle of the sector in radian.

Putting $A=64,\theta=\dfrac{\pi}{6}$ , we get

$64=\dfrac{1}{2}r^2\times \dfrac{\pi}{6}$

$64=\dfrac{\pi}{12}r^2$

$64\times \dfrac{12}{\pi}=r^2$

$\dfrac{768}{\pi}=r^2$

Taking square root on both sides, we get

$\sqrt{\dfrac{768}{\pi}}=r$

$16\sqrt{\dfrac{3}{\pi}}=r$

Therefore, the value of r is $16\sqrt{\dfrac{3}{\pi}}$ m.

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3 years ago

System of conics help

ZanzabumX [31]

Answer:

Solutions are (6,3) and (-2,3).

Step-by-step explanation:

From the first equation given we can write:

$(x-2)^{2} = 16-(y-3)^{2}\\$

substituting for $(x-2)^{2}$ in the second equation given we get

$\frac{16-(y-3)^{2}}{16} + \frac{(y-3)^{2}}{64} = 1$

$\frac{-(y-3)^{2}}{16} + \frac{(y-3)^{2}}{64} =0$

∴ y=3

Putting y=3 in the first equation we get

$(x-2)^{2} = 16$

x-2 = ±4

Hence x=6 or x=-2.

7 0

3 years ago

8 and 11/100 into a mixed number and a decimal

katrin [286]

Answer:

8.11 and 9 1/11

Step-by-step explanation:

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3 years ago

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OLga [1]

Answer:

A= linear, B= linear

Step-by-step explanation:

because im learning this rn too

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3 years ago

Andrew is buying pencils, and he wants to buy fewer than 25. He plans to give 75% of the pencils to his students and save three

sweet-ann [11.9K]

Answer:

50%

Step-by-step explanation:

the will have 75minis 25

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3 years ago

Read 2 more answers

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