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Anika [276]
3 years ago
14

3a. Angie multiplied the following numbers and wrote her answer in scientific notation. Is her answer correct? * (6 x 104) (7 x

10°) = 42 x 107​
Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
3 0
Hshdhhssgsbsbbsbhshshshshhfhddbb36363699bxbxbxbxbxdhdhhdhheepp

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%7B%7D%5E%7B2%7D%20-%204%20%7D%7B%20%5Csqrt%7Bx%20%7B%7D%5E%7B2%7D%20-%206x%2
Nimfa-mama [501]

First of all, we can observe that

x^2-6x+9 = (x-3)^2

So the expression becomes

\dfrac{x^2-4}{\sqrt{(x-3)^2}} = \dfrac{x^2-4}{|x-3|}

This means that the expression is defined for every x\neq 3

Now, since the denominator is always positive (when it exists), the fraction can only be positive if the denominator is also positive: we must ask

x^2-4 \geq 0 \iff x\leq -2 \lor x\geq 2

Since we can't accept 3 as an answer, the actual solution set is

(-\infty,-2] \cup [2,3) \cup (3,\infty)

7 0
3 years ago
Help please :]<br> 6x-2 = 8x+11
slavikrds [6]

Step-by-step explanation:

  • 6x-2=8x+11
  • 6x-8x=11+2
  • -2x=13
  • x=13/-2
  • x=-6.5
6 0
2 years ago
Read 2 more answers
Find the product. Simplify your answer.<br> (2u–4)(u2+2u–1)
Goshia [24]
It would be 2u3+4u2-2u-4u2-8u+4= 2u3-10u+4
4 0
3 years ago
Of the 14 professional sports team in Tennessee, 9 are baseball teams. About what percent of the professional sports teams in Te
Westkost [7]

Answer:

64.3%

Step-by-step explanation:

Number of professional sports team in Tennessee is equal to 14

9 are baseball teams

Percentage of baseball teams

= no. of baseball teams/ no. of sports team x 100%

That’s 9/14 x 100%

0.643 x 100%

64.3%

The percentage of baseball team in Tennessee professional sports team is 64.3%

6 0
3 years ago
It takes 8 minutes for sue to make 2 laps around the go-kart track. how many laps can sue complete in 24 minutes
evablogger [386]
It will be six laps because 8 times three equal 24 and 2 laps in 8 minutes each 8 min will be two so 2 times three equal six
3 0
3 years ago
Read 2 more answers
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