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Korvikt [17]
3 years ago
7

Can anyone help with this question pleasee

Mathematics
1 answer:
Vladimir [108]3 years ago
7 0

Answer:

y = 1

Step-by-step explanation:

Given:

a^{3y - 5} = \frac{1}{a^2}

Apply the negative exponent rule

a^{3y - 5} = a^{-2}

The bases will cancel each other

3y - 5 = -2

3y - 5 + 5 = -2 + 5

3y = 3

\frac{3y}{3} = \frac{3}{3}

y = 1

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Answer:

  11. x = 6; y = 6.5

  12. x = 2; y = 4

Step-by-step explanation:

In each figure, the hash marks on the lines indicate the parallel lines (marked with red arrows) are equally-spaced. That means the two expressions involving x are equal to each other, and the two expressions involving y are equal to each other.

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11. 2x +1 = x +7

  x = 6 . . . . . . . subtract (x+1) from both sides

and

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  2y = 13 . . . . add (8-y) to both sides

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12. x +3 = 3/2x +2

  1 = 1/2x . . . . . subtract (x+2)

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and

  2y -1 = 3y -5

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3 years ago
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Graph the following number on a number line.<br> -15/8
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3 years ago
The height, h, in feet of a piece of cloth tied to a waterwheel in relation to sea level as a function of time, t, in seconds ca
Anni [7]

Considering the period of the cosine function, it is found that it takes 40 seconds for the wheel to complete one turn.

<h3>What is the period of the cosine function?</h3>

The cosine function is defined by:

f(x) = acos(bx + c) + d.

For the period, we have to look at coefficient b, and the period is:

P = 2π/|B|

For this problem, the function is given by:

h(x) = 15 cos(π/20)

Hence B = π/20, and the period is:

P = 2π/|B| = 2π/(π/20) = 2 x 20 = 40 seconds.

Hence it takes 40 seconds for the wheel to complete one turn.

More can be learned about the period of trigonometric functions at brainly.com/question/12502943

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2 years ago
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MrRissso [65]

Answer:

Hey

Step-by-step explanation:

Sorry I need the points asap

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3 years ago
PLZ ANSWER FIRST GETS BRAINLIEST + 20 POINTS
sleet_krkn [62]

Answer:

x= -2, y = 5

Step-by-step explanation:

y = -4x-3

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