4 years ago

REALLY NEED HELP!!! PLZ

Mathematics

1 answer:

Advocard [28]4 years ago

7 0

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T/5=2.9

iVinArrow [24]

Answer:

multiply by 5

Step-by-step explanation:

in order to get t by itself, you must do the incerverse operation of division, which is multiplication

5(t/5)=5(2.9)

the 5 crosses out and you get

t=14.5

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3 years ago

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wolverine [178]

Answer:

length is 17

width is 14

Step-by-step explanation:

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3 years ago

The mass of a freight train is 9.98 ⋅ 106 kilograms. The mass of an aircraft carrier is 7.3 ⋅ 107 kilograms. Approximately how m

Eva8 [605]

Answer:

1980.0

Step-by-step explanation:

19 x 100

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3 years ago

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natali 33 [55]

Q 9 the answer is 250

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3 years ago

The parabola has a focus at (-3,0) and directrix y=3. What is the correct equation for the parabola?

Lilit [14]

Answer:

$y = - \frac{1}{12} {x}^{2}$

Step-by-step explanation:

We want to find the equation of a parabola withfocus at (-3,0) and directrix y=3.

This para has its vertex at the origin and opens downward.

The equation is of the form

${x}^{2} = - 4py$

Where p is the distance from the vertex to the focus.

This distance is p=|0-3|=3

We substitute p=3 to obtain:

${x}^{2} = - 4 \times 3y$

${x}^{2} = -12y$

Hence the equation is

$y = - \frac{1}{12} {x}^{2}$

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4 years ago