3 years ago

Anna earned $9 an hour babysitting. She wants

Mathematics

1 answer:

fenix001 [56]3 years ago

8 0

Answer:

8.33 hours

Step-by-step explanation:

120-45 = 75

75 ÷ 9 = 8.33

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The velocity of a particle moving back and forth on a line is vequalsStartFraction ds Over dt EndFraction equals6 sine (2 t )Sta

max2010maxim [7]

Answer:

s = 6 m

Step-by-step explanation:

The value of the velocity v is given as:

$v = \frac{ds}{dt} = 6 sin(2t)$ m/s

To find s, we have to integrate and apply the initial values of s = o when t = 0:

$\frac{ds}{dt} = 6 sin(2t)\\\\\int\limits^s_0 {ds} = \int\limits^t_0 {6sin(2t)} \, dt\\\\s|^s_o = -3cos(2t)|^t_o\\\\s - 0 = -3cos(2t) -(-3cos(0))\\\\s = -3cos(2t) + 3(1)\\\\s = -3cos(2t) + 3$

When t = π/2, s will be:

s = -3cos(2 * π/2) + 3

s = -3cos(π) + 3

s = -3(-1) + 3

s = 3 + 3

s = 6 m

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4 years ago

Which of the following is a line segment as shown in the drawing? ED EH DH CD

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Answer:

so line CD

Step-by-step explanation:

a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints.

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3 years ago

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Oksana_A [137]

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Step-by-step explanation:

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What is 4x-18 rewritten 4 different ways?

nasty-shy [4]

-18+4x
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Step-by-step explanation:

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