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3 years ago

BRAINLIEST FOR QUICKEST Please help with this question!!

Mathematics

2 answers:

GarryVolchara [31]3 years ago

6 0

Answer:

A and B and C and D

Step-by-step explanation:

Letters

Sever21 [200]3 years ago

4 0

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How do I write 6 x 3/20 as a fraction in simplest form?

Talja [164]

First, you need to turn it into a fraction by doing the multiplication. 6/1 × 3/20 which is 18/20. then you simplify it to get 9/10. 9/10 is your answer

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4 years ago

Solve the equation. –x + 8 + 3x = x – 6 x = –18 x = –14 x = 2 x = 4

mezya [45]

Answer:

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$- x + 8 + 3x = x - 6 \\ - x + 3x - x = - 6 - 8 \\ 2x - x = - 6 - 8 \\ x = - 14$

✏ The value of x = - 14 (option 2)

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3 years ago

Read 2 more answers

Solve the equation for y. 2x-y=5

bazaltina [42]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A buoy oscillates in simple harmonic motion y= A cos cos as waves move past it. The buoy moves a total of 3.5 feet (vertically)

NNADVOKAT [17]

Answer:

a) $y = 1.75 ft cos (\frac{\pi}{5}t)$

b) $v(t) = -1.0995 sin (\frac{\pi}{5}t)$

Step-by-step explanation:

Part a

Since the buoy oscillates in simple harmonic motion the equation to model this is given by:

$y = A cos (wt +\theta)$

For this case from the info given we know that:

$2A = 3.5 , A = \frac{3.5}{2}= 1.75 ft$

"It returns to its high point every 10 seconds." That means period =10 $T =10s$ , and the angular frequency can be founded like this:

$w = \frac{2\pi}{10}= \frac{\pi}{5}$

Assuming that the value for the phase is $\theta =0$ our model equation is given by:

$y = 1.75 ft cos (\frac{\pi}{5}t)$

Part b

From definition we can obtain the velocity with the derivate of the position function and if w calculate the derivate we got this:

$\frac{dy}{dt}= v(t) = -1.75 ft (\frac{\pi}{5}) sin (\frac{\pi}{5}t)$

$v(t) = -1.0995 sin (\frac{\pi}{5}t)$

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3 years ago

a cylinder well is 25 meters deep and has a diameter of 1.8 meters. Approximately how many cubic meters of soil were dug our to

tia_tia [17]

The formula for volume of a cylinder is V= PI x r^2 x H

r = radius = 1/2 diameter = 1/2*1.8 = 0.9 meters
Height = 25

Volume = PI x 0.9^2 x 25
= PI x 0.81 x 25
= PI x 20.25
= 63.62 cubic meters

4 0

3 years ago