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Afina-wow [57]
3 years ago
9

Use a graphing calculator and a system of

Mathematics
1 answer:
Gnom [1K]3 years ago
3 0

Answer: -2 and 0

Step-by-step explanation:

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Hello may i please have help with this question
Pani-rosa [81]

Answer:

x=√139-3, x=-√139-3

Step-by-step explanation:

to complete the square, you first move the constant to the other side of the equation-its already done for you!

now, you find the perfect square trinomial. You divide the b value by 2, then square it: 6/2=3, 3^2=9.

What you do to one side has to be done with the other.

x^2+6x+9=130+9

now you can factor the square:

(x+3)^2=139

squareroot both sides:

x+3=√139

x+3=-√139

now subtract both sides by 3

x=√139-3

x=-√139-3

5 0
2 years ago
If x-3 is a factor of x3+4x2+kx-30.Find the value of k.​
Bogdan [553]

Answer:

k=-11

Step-by-step explanation:

x^{3}+4x^{2}+kx-30

if x-3 is a factor,

(3)^{3}+4(3)^{2}+k(3)-30=0\\27+4*9+3k-30=0\\27+36+3k-30=0\\33+3k=0\\3k=-33\\k=-11

3 0
3 years ago
Your friend paid $22.75 for 7 ice cream cones. Which is the unit cost per ice cream cone
spin [16.1K]

Answer:

the answer 3.25

Step-by-step explanation:

3 0
3 years ago
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Lesechka [4]
4
22
-12
those are the right answers

5 0
3 years ago
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Iteru [2.4K]

Step-by-step explanation:

All is explained in the photo

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3 years ago
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