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tatyana61 [14]
3 years ago
13

What is the square root of 9

Mathematics
1 answer:
GalinKa [24]3 years ago
7 0
3 is the answer. 3 X 3 = 9
I'm glad I could help
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Stock worth $80 a share dropped in value by 15% on Tuesday, then increased by $7 the next Wednesday and, finally, increased by 1
Nutka1998 [239]
<h2>Steps</h2>

So here are a couple expressions when a value changes by percentage (p = percentage in decimal form and m = original value):

  • When <em>decrease</em>: (1 - p)m
  • When <em>increase</em>: (1 + p)m

So firstly, the $80 share dropped by 15%. Since this is a <em>decrease</em>, follow the appropriate expression:

15\%=0.15\\\\(1-0.15)*80\\0.85*80\\68

<em>On Tuesday, the share went from $80 to $68</em>

Next, on Wednesday the share increased by $7. With this, just add $68 and 7.

68+7=75

<em>On Wednesday, the share went from $68 to $75</em>

Lastly, on Thursday the share increased by 12%. Since this is an <em>increase</em>, follow the appropriate expression:

12\%=0.12\\\\(1+0.12)*75\\1.12*75\\84

<h2>Answer</h2>

<u>The final price of the share is $84.</u>

7 0
3 years ago
???????......????...??..??…??..?.?.?..​
alexgriva [62]

Answer:

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
I am not sure how sigma notation works, can somebody explain how to solve this? It isn't the second choice.
Masja [62]

Answer:

first answer is correct

Step-by-step explanation:

Hello, we want to write 2 + 4 + 6 + ... + 20

for n = 1, 2n = 2*1 =2

for n = 2, 2n = 2*2=4

for n = 3, 2n=2*3=6

etc

so

\displaystyle \sum_{n=1}^{10} {2n} = 2*1 + 2*2 +2*3+2*4+...+2*10=2+4+6+8+...+20

thanks

6 0
3 years ago
Translate to an equation and solve the product of 2 and a number increased by 8 is -48
Marizza181 [45]
The equation would be 2x+8=-48 and x=-28
4 0
3 years ago
Solve for X, 4x+5=17
Anettt [7]

Answer:

x=3

Step-by-step explanation:

4x=17-5

4x=12

x=4/12

x=3

7 0
3 years ago
Read 2 more answers
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