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hjlf
3 years ago
9

How do you simplify this expression? - 3+8n+n- 10

Mathematics
1 answer:
Zarrin [17]3 years ago
6 0
You have 9n and -7 in total so the answer is 9n-7. You add up all the numbers and then add up the numbers with n attached to them
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Hakim invests $700 in a bank that pays 5% simple interest annually. After one year he uses the money in his account to buy a com
ludmilkaskok [199]

Answer:

  $111

Step-by-step explanation:

The bank balance is ...

  $700 × (1 + 0.05) = $735

The cost of the computer is ...

  $750 × (1 -0.20) × (1 +0.04) = $624

The remaining bank balance after paying for the computer is ...

  $735 -624 = $111

_____

When you add a percentage, you effectively multiply by the sum of 1 and that percentage. The same is true if the amount "added" is negative (as for a discounted price).

  (original amount) + (percentage)×(original amount)

Use the distributive property to factor out the original amount:

 = (original amount)×(1 + percentage)

6 0
3 years ago
Find the size of one interior angle of a regular pentagon
barxatty [35]

Answer:

The measure of one interior angle of a regular pentagon is 108 degrees.

Step-by-step explanation:

Use a digital ruler.

3 0
3 years ago
What does 8k + 3 + 4k=
Svetach [21]
3(4k+1) is the result I hope it helps you
7 0
3 years ago
Read 2 more answers
What is the ratio of the longer leg of a 30 60 90 triangle to its hypotenuse?
galben [10]
30: x
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7 0
3 years ago
I have attached the problem in a picture below!​
lesantik [10]

Answer:

A. The solution set is x = 5 or -7

Step-by-step explanation:

\sqrt[4]{ {x}^{2} + 2x }  =  \sqrt[4]{35}  \\ {({x}^{2} + 2x) }^{ \frac{1}{4} }  =  {(35)}^{ \frac{1}{4} }  \\ {x}^{ \frac{1}{2} } + {2x}^{ \frac{1}{4} }   =  {35}^{ \frac{1}{4} }  \\   {x}^{2}  + 2x = 35 \\  {x}^{2}  + 2x  -  35 = 0 \\ (x - 5)(x + 7) = 0 \\ x = 5  \: or \:  - 7

Therefore, the answer is A. as the solution is x = 5 or -7

4 0
1 year ago
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