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2 years ago

The number 1,645.6 expressed in scientific notation equals

Mathematics

1 answer:

grin007 [14]2 years ago

8 0

Answer:

$1.6456 * 10^{3}$

Step-by-step explanation:

Step 1: Convert to Scientific Notation

$1645.6$ is in standard notation

$1.6456 * 10^{3}$ is in scientific notation

Answer: $1.6456 * 10^{3}$

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Divide.

Alexxandr [17]

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2 years ago

the ratio of pine trees to elm trees in a park is 7:11. How many pine trees are there in the park if there are 68 more elm trees

Hitman42 [59]

Answer:

The number of pine tree is 119 and the number of elm tree is 187.

Step-by-step explanation:

The ratio of pine trees to elm trees in a park is 7:11

Let us assume that the number of pine tree is 7x and the number of elm tree is 11x.

It is also given that, there are 68 more elm trees as compared to the pine trees.

i.e $11x=7x+68$

$\Rightarrow 11x-7x=68$

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2 years ago

A map has a scale of 1 cm to 16 km.

ra1l [238]

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1cm • x = 23.1cm
x = 23.1

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The real distance is 369.6km.

4 0

2 years ago

Suppose we want to choose 3 letters, without replacement, from the 4 letters A, B, C, and D.

ioda

Answer:A) 24 waysB) 4 waysStep-by-step explanation:a) permutation occurrs when order of choices matters.N = 4P3 = 4!/(4-3)! = 4!/1!N = 24 waysb) combination occurs when order of choices doesn't matter.N = 4C3 = 4!/3!(4-3)! = 4!/3!(1!)N = 4 ways

Step-by-step explanation:

a) permutation occurrs when order of choices matters.N = 4P3 = 4!/(4-3)! = 4!/1!N = 24 waysb) combination occurs when order of choices doesn't matter.N = 4C3 = 4!/3!(4-3)! = 4!/3!(1!)N = 4 ways(hope this helps:)

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1 year ago