3 years ago

1.

Mathematics

1 answer:

mars1129 [50]3 years ago

5 0

Answer:

Step-by-step explanation:

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Hedi Earns 3% commission on the jewelry she sells each week last week she sold $730 worth of jewelry how much commission did she

cricket20 [7]

730*0.03=21.9

She makes $21.90

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3 years ago

keli wants to sew trim around the sleeves and hem of a dance costume. she needs a piece of trim that is 8 1/8 inches long for th

Sav [38]

Answer:

1 15/16 ft

Step-by-step explanation:

40 5/8 + 8 1/8 = 48 6/8

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5 x minus 10 y = 30 what is the first step to find x

chubhunter [2.5K]

Move X to the other side with the 30.

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3 years ago

PLEASE HELP!! this is due soon and i rlly need help

egoroff_w [7]

Answer:

Solution given:

r=3km

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=¼*π*3²

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is a required answer

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3 years ago

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Find the distance traveled by a particle with position (x, y as t varies in the given time interval. x = 3?sin2 t, y = 3?cos2 t,

ANTONII [103]

Assuming the particle's position is given by

$\begin{cases}x(t)=3-\sin2t\\y(t)=3-\cos2t\\0\le t\le4\end{cases}$

then the distance traveled over the interval is

$\displaystyle\int_{t=0}^{t=4}\sqrt{\left(\dfrac{\mathrm dx(t)}{\mathrm dt}\right)^2+\left(\dfrac{\mathrm dy(t)}{\mathrm dt}\right)^2}\,\mathrm dt$
$=\displaystyle\int_0^4\sqrt{(-2\cos2t)^2+(2\sin2t)^2}\,\mathrm dt$
$=\displaystyle\int_0^4\sqrt{4\cos^22t+4\sin^22t}\,\mathrm dt$
$=\displaystyle2\int_0^4\mathrm dt$
$=2(4-0)=8$

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3 years ago