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2 years ago

Help with Geometry please!

Mathematics

1 answer:

Nesterboy [21]2 years ago

3 0

Its the fourth one hope this helps

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12.009 write in word form

Ann [662]

Twelve and nine thousandths

8 0

2 years ago

HELP MEEEE PLZ. i need to Find the surface area and volume

lisabon 2012 [21]

Answer:

A ≈ 494.80 $mm^{2}$

V = 827.02 $mm^{3}$

Step-by-step explanation:

height ( h ) = 13 mm

radius ( r ) = $\frac{9mm}{2}$ = 4.5 mm

Surface area = $2\pi rh + 2\pi r$

= 2π(4.5)(13) + 2π(4.5)

≈ 494.80 $mm^{2}$

Volume = $\pi r^{2} h$

= $\pi (4.5)^{2} (13)$

= 827.02 $mm^{3}$

6 0

2 years ago

10 x 2 tens = tens =

Rama09 [41]

10 x 2 = 20 (twenty)

4 0

2 years ago

Read 2 more answers

On a map, 1/4 inch between locations represents an actual distance of 2 miles between the locations. What is the actual distance

Fittoniya [83]

Answer:

12/17 miles

Step-by-step explanation:

Make the denominators equal -> 1/4 = 17/68, 3/34 = 6/68

17/68 inches represent 2 miles

The ratio between 17/68 and 6/68 is 17/68 : 6/68 = 17/6
So, the ratio between the distance should also be 17/6

-> 3/34 inches represent 2 : 17/6 = 12/17 (miles)

Hope it helps :)

3 0

2 years ago

Anybody know the right answer?

Dmitry_Shevchenko [17]

If we just have

$y = \cos x$

that's an amplitude of 1 and a period of $2\pi$

Let's modify this step by step.

Amplitude of 4. Four times the amplitude means a factor of 4 on the outside.

$y = 4 \cos x$

Period of π. Double the period means a factor of 2 on the inside.

$y = 4 \cos(2x)$

Horizontal shift of π/2 to the left. To the left means adding a positive number to x. The question appear ambiguous. It's not clear to me if we add to x or 2x; let's make it

$y = 4 \cos(2(x + \frac \pi 2))$

Vertical shift of 3:

$y = 3 + 4 \cos(2(x + \frac \pi 2))$

$y = 3 + 4 \cos(2x + \pi)$

Depending on the interpretation of the phase shift, that pi may be a pi/2.

Answer: $3 + 4 \cos(2x + \pi)$

4 0

2 years ago