3 years ago

Rename 5,400 as hundreds. Includes a quick picture or a place-value chart in your explanation

Mathematics

1 answer:

Bess [88]3 years ago

5 0

No. no. no! no. no. no. no.

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Find the inverse f(x)=6x+7

Lorico [155]

Answer:

$f^{-1}$ (x) = $\frac{x-7}{6}$

Step-by-step explanation:

let y = f(x) , then rearrange making x the subject

y = 6x + 7 ( subtract 7 from both sides )

y - 7 = 6x ( divide both sides by 6 )

$\frac{y-7}{6}$ = x

Change y back into terms of x with x = $f^{-1}$ (x) , then

$f^{-1}$ (x) = $\frac{x-7}{6}$

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3 years ago

What times 40 makes 100

JulsSmile [24]

2.5 is the answer to your question

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3 years ago

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an airplane tries to fly due north at 100 m/s but a wind is blowing from the west at 30 m/s. what heading (angle and direction)

Agata [3.3K]

Angle of wind from west = 45°
x-component of wind:
Wx = 30cos(45)
= 21.1 m/s

The x component of the plane's speed should cancel this while the y component should remain 100 m/s

Py = Psin(∅)
100 = Psin(∅)
P = 100/sin(∅)

Px = Pcos(∅)
P = 21.1/cos(∅)
100/sin(∅) = 21.1/cos(∅)
tan(∅) = 100/21.1
∅ = 78.1° north from the west direction.

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3 years ago

A backpack originally costs $35.It is on sale for $22.75. Find the percent of decrease.

nydimaria [60]

12.25 sorry if wrong

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3 years ago

Find the pressure in N/m2 exerted by a force of 40 N on an area of 5 m2<br>N/m2

zaharov [31]

Answer:

$pressure = \frac{force}{area} \\ = \frac{40}{5} \\ = 8 \: N {m}^{ - 2}$

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3 years ago