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Romashka [77]
3 years ago
9

Solve the quadratic equation below by completing the square. What are the

Mathematics
1 answer:
katrin2010 [14]3 years ago
5 0
I think it’s c I hope it help
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Equation to find original price if sale price of $429 is a 34% discount
Burka [1]

Answer:

The original price is $650

Step-by-step explanation:

There's an actual algebra method for this, but this is my method because I find it way easier to remember.

Since the most you can discount out of an item is 100% (well, it's considered free then) let's subtract 100 - 34, which is 66.

Now, turn it into a decimal because it makes the numbers easier- 0.66.

Since when you're finding the discount of an original price, you multiply the original price by the discount- instead for finding the original price for a discounted item we divide $429 by 0.66 instead, since when you divide a number by another number that's under 1 the quotient is a larger number.

So, 429 ÷ 0.66 = 650.

Therefore, the original price of the $429 sale price for a 34% discount is $650.

7 0
2 years ago
Solve the formula <br> F=ma for a<br> plss
barxatty [35]

Answer:

Step-by-step explanation:

F = ma

ma = F

a = F/m

8 0
3 years ago
If the diameter of a circle is 22.2, then the radius would be _____?
kumpel [21]

Answer:

11.1

Step-by-step explanation:

G o o g l e

4 0
3 years ago
Read 2 more answers
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
What is 7 1/5 - 6 2/5 =?
poizon [28]

Answer:

0.8

Step-by-step explanation:

7 1/5 - 6 2/5 = 0.8

5 0
3 years ago
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