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Ad libitum [116K]
3 years ago
15

Two equations are given below:

Mathematics
2 answers:
stealth61 [152]3 years ago
8 0

a is given to us so just plug a into the first equation:

b-3 - 3b =9

Add 3 to both sides:

b-3b=12

Combine like terms:

-2b=12

Divide by -2 to get b by itself:

b=-6

The only answer with b as -6 is the first one, (-9,-6)

Anit [1.1K]3 years ago
7 0

The first one, (-9,-6) because if you were to plug it in the answers would equal therefore, the equation is true.

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Write y=2x^2+12x+14 In vertex form
ratelena [41]

Answer:

\large\boxed{y=2(x+3)^2-6}

Step-by-step explanation:

The vertex form of a parabola f(x) = ax² + bx + c:

y=a(x-h)^2+k

(h, k) - vertex

h=\dfrac{-b}{2a}\\\\k=f(h)

We have the equation:

y=2x^2+12x+14\\\\a=2,\ b=12,\ c=14\\\\h=\dfrac{-12}{2(2)}=\dfrac{-12}{4}=-3\\\\k=f(-3)=2(-3)^2+12(-3)+12=2(9)-36+12=18-36+12=-6

Finally:

y=2(x-(-3))^2+(-6)=2(x+3)^2-6

7 0
3 years ago
Round to the nearest hundredth please answer I need it
ioda

Answer:

60 degrees

Step-by-step explanation:

A)60

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6 0
3 years ago
What are all of the steps to get 7(3x-1)-(x+5)
Flauer [41]

Answer:

20x-12

Step-by-step explanation:

Given:

7(3x−1)−(x+5)

Step 1: Distribute the Negative Sign:

=7(3x−1)+−1(x+5)

=7(3x−1)+−1x+(−1)(5)

=7(3x−1)+−x+−5

Step 2: Distribute:

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=21x+−7+−x+−5

Step 3: Combine  

=21x+−7+−x+−5

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=20x+−12

8 0
3 years ago
Read 2 more answers
Rewrite 81 as a square or a cube
kolbaska11 [484]
9 squared is 81
81=9^2
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5 0
3 years ago
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cupoosta [38]

Answer:

4<x<8                         interval notation is (4,8)

Step-by-step explanation:

hope this helps

5 0
2 years ago
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