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3 years ago

Change to standard form 9.071x10^-6

1 answer:

3 0

This is Scientific Notation right?
OK
So when the exponent over then is a negative number, that means the decimal point is jumping to the left to make the number smaller

0.000009071

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An express train travels 80km/h from Ironton to Wildwood. A local train, traveling at 48km/h, takes 2 hours longer for the same

masha68 [24]

Answer:

They are 240 kilometers apart.

Step-by-step explanation:

This question can be solved using the following relation:

$v = \frac{d}{t}$

In which v is the velocity, d is the distance and t is the time.

An express train travels 80km/h from Ironton to Wildwood.

Here we have $v = 80, t = x$ . So

$v = \frac{d}{t}$

$80 = \frac{d}{x}$

$d = 80x$

A local train, traveling at 48km/h, takes 2 hours longer for the same trip.

This means that when $v = 48, t = x + 2[tex]. So[tex]v = \frac{d}{t}$

$48 = \frac{d}{x+2}$

Since $d = 80x$

$48 = \frac{80x}{x+2}$

Applying cross multiplication

$80x = 48(x + 2)$

$80x = 48x + 96$

$32x = 96$

$x = \frac{96}{32}$

$x = 3$

So the distance is:

$d = 80x = 80*3 = 240$

They are 240 kilometers apart.

3 0

2 years ago

Hank estimated the width of the door to his class room in feet what is a reasonable estimate

timurjin [86]

My reasonable estimate might be about 2 1/2 feet. I know that because taking three rulers up to your bedroom or a normal room and get about 2 or 2 1/2 feet

4 0

3 years ago

Find the x-intercepts of the parabola with vertex (1, -9) and y intercept at (0, -6).

Furkat [3]

The x intercept in this mathmatical equation is 1

4 0

3 years ago

Angela is always forming study groups before tests. What type learning preference might she have? A. Visual c. Auditory b. Inter

My name is Ann [436]

Answer:

Learning preference that Angela prefer is interpersonal.

Step-by-step explanation:

Learning preference that Angela prefer is interpersonal. As it is defined as the interaction which done within one close group where member interact and share ideas among each other.

while intrapersonal refer to the oneself communications, visual and auditory communication used some video lesson and audio guide respectively to enhance one knowledge

7 0

2 years ago

Read 2 more answers

How would i explain how i got my answer (my answer was 200, all the other numbers were already there)

BigorU [14]

Step-by-step explanation:

80 times 2 is 160

Therefore, 100 times 2 is 200

You multiply the denominator and numerator by the same number.

4 0

2 years ago