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Ivenika [448]
3 years ago
8

Please HELPP!!! Solve the system of equations. y= 2x y= x^2 - 15

Mathematics
1 answer:
Nataly [62]3 years ago
7 0

y=2x\\y=x^2-15\\\\x^2-15=2x\\x^2-2x-15=0\\x^2-5x+3x-15=0\\x(x-5)+3(x-5)=0\\(x+3)(x-5)=0\\x=-3 \vee x=5\\\\y=2\cdot(-3) \vee y=2\cdot5\\y=-6 \vee y=10\\\\(x,y)\in\{(-3,-6),(5,10)\}

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Help with the step by step
Nataliya [291]

Step-by-step explanation:

First, distribute the -4 to the parenthesis:

24a-22=-4+24a

Add 22 to both sides:

24a-22+22=-4+22+24a

Simplify:

24a=18+24a

Subtract 24a from both sides:

24a-24a=18+24a-24a

Simplify:

0=18

hope this helps :)

4 0
3 years ago
Read 2 more answers
The current i in ameperes at time t in a particular circuit is given by i=12 sin 5 cos t find the maximum current​
Mariulka [41]

Answer:

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Step-by-step explanation:

6 0
3 years ago
What in trying to find is 95-3into4 3 for 4 times. 95-3x3x3x3=_____. What can i do for this answer. ‍☠️~_~-_- -_-||
Mandarinka [93]

Answer:

14

Step-by-step explanation:

To evaluate 95 minus 3, four times

95 - 3⁴

95 - (3 * 3 * 3 * 3)

95 - (81)

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= 14

Hence, 95 - (3 * 3 * 3 * 3) = 14

6 0
3 years ago
What is the value of F(5) in the function below?
Sever21 [200]

Answer:

<h2>B. 243</h2><h2 />

Step-by-step explanation:

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then

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6 0
4 years ago
Larissa is considering two summer jobs. A job at the mall pays $400 per week plus $15 for every hour of overtime. A job at the m
Rina8888 [55]
Solve using system of equations!
Let y=total amount of money and x=hours of overtime.
mall: y=400+15x
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Solve! Set the equations equal to each other to find x.
400+15x=360+20x
40=5x
x=8
After 8 hours of overtime the movies would pay her more.
4 0
3 years ago
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