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gayaneshka [121]
3 years ago
10

Heo started to solve the quadratic equation (x + 2)2 – 9 = –5. He added 9 to both sides and the resulting equation was (x + 2)2

= 4. Next, he took the square root of each side. Which was the resulting equation of that step?
Mathematics
1 answer:
Rzqust [24]3 years ago
3 0

Step-by-step explanation:

After taking the square root:

x + 2 = ±2

Notice that x + 2 can also equal -2, because (-2)² = 4.

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Fantom [35]
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6 0
3 years ago
P=$222 r=12% Y=10 A=?
sergey [27]
To solve for the A or the principal amount plus interest you can use two formulas:

A = P + I

Where: P = Principal
             I  = Interest

or you can use 

A = P (1+ rt)

Where: P = principal
             r  = rate in decimal
             t  = time in years

With your given you can use the second one, without having to use the first. 
Given that the Principal amount is $222 and the rate is 12% and time is 10 years, we first need to convert your rate into decimal by dividing the value in percent by 100 which will yield 0.12. 

Then now we can just input the data that you know into the formula:
A = P(1+ rt)
   = $222(1 + (0.12)(10))
   = $222(2.2) 
   = $488.40

Your A is then equal to $488.40

If you need to get the simple interest all you need to use is the first formula given:

A = P + I
for the interest you transpose the P to the side of the A and you will get:
I = A - P
  = $488.40 - $222
  = $266.40

$266.40 is the added interest to the principal amount. 
7 0
3 years ago
Look at the picture above please help!!!
IgorLugansk [536]
I think you have to subtract 60% and 80% which you get 20%
7 0
3 years ago
Identify the set of numbers that best describes every situation. Select all that apply. The height of an airplane as it descends
Aleks04 [339]

Answer:

a, c, d, e could all be used to describe this

Step-by-step explanation:

If a plane is defending it is so many feet from the ground and feet are in whole numbers. integers, rational numbers, real numbers, and whole numbers are all whole

5 0
3 years ago
HELP PLS :) <br> What is the slope of the line?
Vedmedyk [2.9K]

Answer:

-1/3

Step-by-step explanation:

if we use the rise over run method we see a fall of 1 and a run of 3. since we are using fall instead of rise that makes this slope negative. hope this helped :)

3 0
3 years ago
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