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Katen [24]
3 years ago
15

Is 25 x 10 to the power of 0 in scientific​ notation? If​ not, explain. Use pencil and paper. Explain why 10 is used as the base

in the second scientific notation factor.
Mathematics
1 answer:
lana66690 [7]3 years ago
4 0

Answer:

a) Scientific notation is written as a unit digit, that can have other digits after the decimal place, multiplied by 10 to the power of n, where n can be any integer number.

Then 25x10^0 is not scientific notation, because there are two digits at the left of the decimal point.

The scientific notation would be:

2.5x10^1

b) Why is this useful?

Because we divide all our measures in powers of 10.

For example, you know that 1 meter  = 100c

But we can also write this as:

1m = 1.0*10^3 cm.

The use of scientific notation comes useful because we can have a fast read of the dimensions of our measure, and in another hand, is way easier work with the 10 as a base when we solve equations.

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A grocery store paid $85 for 4 crates of milk. How much was one crate of milk?​
Ivan

Answer:

21.25

Step-by-step explanation:

85÷4=21.25

7 0
2 years ago
An adventurous dog strays from home, runs three blocks east, two blocks north, one block east, one block north, and two blocks w
Marrrta [24]
<h2>Answer:</h2>

<u>Distance = 360.55 m</u>

<u>Direction = North-East</u>

<h2>Step-by-step explanation:</h2>

In the question,

The adventurous dog starts from O, say.

He moves 3 blocks East = 300 m

then,

2 blocks North = 200 m

1 block East = 100 m

1 block North = 100 m

2 blocks West = 200 m

So,

Distance of the Dog's <u>final position</u> from the <u>initial position</u><u>.</u>

OE is given by,

In triangle OLE, using Pythagoras theorem,

OE^{2}=OL^{2}+LE^{2}\\OE^{2}=(200)^{2}+(300)^{2}\\OE^{2}=40000+90000\\OE=360.55\,m

<em><u>Therefore, the distance of Dog from the Home is 360.55 m and the direction of Dog from Home is North-East.</u></em>

8 0
2 years ago
Add
Alona [7]
The correct answer is A
7 0
2 years ago
Solve for x.
Zigmanuir [339]
X/2 >= -4
x >= -4 * 2
x >= -8
6 0
3 years ago
Dwayne walks a total of 960 feet around 3 sides of a square city block. Which
Ugo [173]

Answer:

The perimeter is 1280ft

Step-by-step explanation:

Let the side length of the square be s.

Then the distance around three sides is 3s.

According to the question the distance around 3 sides of a square city block is 960 feet.

This implies that:

3s = 960

s =  \frac{960}{3}

s = 320

The perimeter of a square is

p = 4s

Substitute s=320 to get:

p = 4(320)

p = 1280

The perimeter is 1280 ft

5 0
3 years ago
Read 2 more answers
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