3 years ago

ERROR ANALYSIS Describe and correct the error in solving the equation.

Mathematics

1 answer:

Crank3 years ago

6 0

the error was that you did not use the distributive property in 4(x-2)

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xz_007 [3.2K]

Answer:

3.3 x 10⁻⁴

Step-by-step explanation:

Given expression:

$\frac{2.64 x 10^{-3} }{8.0 x 10^{0} }$

To solve this problem;

10° = 1

So;

$\frac{2.64 x 10^{-3} }{8.0}$

= $\frac{2.64}{8}$ x 10⁻³

= 0.33 x 10⁻³

= 3.3 x 10⁻¹ x 10⁻³

= 3.3 x 10⁻⁴

4 0

3 years ago

Kai spent 90% of his money on a laptop that cost $423. Does he have enough money left to buy a scanner.explain

GarryVolchara [31]

Okay, so:

You would want to find what 1/10 of the laptop costs. That would be the 10% of money left in Kai's account.

So,

423*.1

(you have to turn the percentage into a decimal; 10%= .10

423*.1= 42.3

So, Kai has 42.3 dollars left to buy a scanner. He only has 10% of his bank account left to spend on the scanner.

I hope this helps!
~cupcake

7 0

3 years ago

I need this problem solved real quick

PIT_PIT [208]

Let's take this problem step-by-step:

The ;unlabeled angle' adjacent to the 'outside angle of measure 78°'

⇒ is on a straight line

⇒ sum of angle measure = 180 degrees

$unlabeled_.angle+78 = 180\\unlabeled_.angle = 102$