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# Pls po help 9e²-3e-56 by 3e-8. 18a²-a-4by2a-1. 7h²-33h-10by7h+2. pls po help this.

• Réponse publiée par: christiandumanon

Unlikely: #2 and #4

Step-by-step explanation:

#1: Total amount of dimes = 18/Total amount of coins = 23; 18/23 > 1/2; Likely

#2: Total amount of brown puppies = 1/Total amount of puppies = 6; 1/6 < 1/2; Unlikely

#3: Total amount of mangoes = 15/Total amount of fruits = 20; 15/20 or 3/4 > 1/2; Likely

#4: Total amount of pink ribbons = 4/Total amount of ribbons = 20; 4/20 or 1/5 < 1/2; Unlikely

• Réponse publiée par: elaineeee

135

Step-by-step explanation:

18(8-2)=1080

125+130+145+135+130+120+160 =945

1080-945=135

Hey ;)Hope this helps
• Réponse publiée par: shannel99

Q: How is the number 720,000,000 written in Scientific Notation?

A: 7.2 x 108

Why is 720,000,000 written as 7.2 x 108 in scientific notation?

The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease.

Calculating scientific notation for a positive integer is simple, as it always follows this notation:

a x 10b

Follow the steps below to see how 720,000,000 is written in scientific notation.

Step 1

To find a, take the number and move a decimal place to the right one position.

Original Number: 720,000,000

New Number: 7.20000000

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number:7.20000000

Decimal Count:  12345678

There are 8 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 7.2 (Please notice any zeroes on the end have been removed)

b = 8

Now the whole thing:

7.2 x 108

Step 4