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den301095 [7]
3 years ago
13

What are the solutions to the quadratic equation x^2-16=0

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

x = ±4

Step-by-step explanation:

Hi there!

x^2-16=0

Move 16 to the other side

x^2=16

Take the square root of both sides

\sqrt{x^2}=\sqrt{16}\\x=\pm4

I hope this helps!

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Where do I put the parentheses:<br>7+3x4-1=39
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(7+3)x(4-2)=39
I hope that helps
8 0
3 years ago
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Solve the system of equations 5x + 6y = 26 and -2 + y = -14 by combining the<br> equations.
aniked [119]

Answer:

(19.6,-12)

Step-by-step explanation:

7 0
2 years ago
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Rozalie spent $26 at a parking garage in downtown Orlando. The garage charged a base free of $7.50 for the first hour and a hour
bagirrra123 [75]
ANSWER : Rozalie spent 6.73 hours at the garage


rate of change = $2.75
base fee = $7.50

set up your equation:
2.75h + 7.5 = 26
($2.75/hour plus the base fee of $7.50 equals the total amount spent, $26)

Now just solve for h

2.75h + 7.5 = 26
2.75h = 18.5
h = 6.727273 (rounded)
h = 6.73

So the answer would be Rozalie spent about 6.73 hours at the garage.

6 0
3 years ago
Determine the solution to the system of equations by using substitution. <br> Y=4x+10<br> Y=-5x-10
amm1812
Steps:
1. Substitute the y in 4x + 10 with -5x-10
-5x-10= 4x + 10
2. Add 5x on both sides
-10= 9x + 10
3. Subtract 10 on both sides
-20= 9x
4. Divide by 9 on both sides
5. Your answer is
X= -20/9
7 0
3 years ago
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if f(x)=2(x)^2+5sqrt(x+2), complete the follwoing statement ( round your answer to the nearest hundreth) : f(0)=_____
Maslowich

Answer:

f(0)=7.07

Step-by-step explanation:

We have the function f(x)=2(x)^2+5\sqrt{(x+2)}

In this case we want to find the value of f0)

To find f(0) you must replace the x in the function with the number 0 and solve as shown below

f(0)=2(0)^2+5\sqrt{(0+2)}

f(0)=0+5\sqrt{(0+2)}

f(0)=5\sqrt{(2)}

Therefore

f(0)=7.07

5 0
3 years ago
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