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KIM [24]
3 years ago
14

Bianca makes an error when she tries to write an expression equivalent to

Mathematics
1 answer:
Anestetic [448]3 years ago
5 0

Answer:

57 - 25y

Step-by-step explanation:

when 15 was distributed it should be '45 - 15y' instead of '45 + 15y'

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Let's compare the scientific notation representation of two of these numbers. 0.0000004 = 4.0 x 10 ⁻⁷ and 1,080,000,000 = 1.08 x
tamaranim1 [39]

Answer:

Step-by-step explanation:

Scientific notation is a quick way to represent a number using powers of base ten. This notation is used to be able to express very large or very small numbers very easily.

The numbers are written as a product:

a * 10ⁿ

where:

  • a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.
  • n = a whole number, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted.  It is always an integer, positive if it shifts to the left, negative if it shifts to the right.

Comparing what is equal to these two numbers when they are written in scientific notation you can see that the value of a is such that 1 ≤ a <10

Comparing what is different from these two numbers when they are written in scientific notation, you can see that the value of the exponent n in both numbers is different, one being positive, indicating that it is a very large number, and the other negative, indicating that it is It is a very small number that is between 0 and 1.

7 0
3 years ago
Lúcia is using energy at a rate of 420 kilocalories (kcal) per hour (h) ice skating.
Flura [38]
420000 calories is 60 mins so 420000/60= 7000/min I think :)
8 0
3 years ago
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Cole found BC in ΔABC . His work is shown below. Identify the first step in which his work shows an error. ​ A Step 1: 92 + 152
garik1379 [7]

Answer: A

Step-by-step explanation:

5 0
3 years ago
How do you solve <br> 5x/3 -2 when x = -18
Dennis_Churaev [7]

Answer:

5×-18/3-2

5×-6-2

-30-2

=32 answer

hope it help you

5 0
3 years ago
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