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frosja888 [35]
3 years ago
15

HELP.......,.........,

Mathematics
1 answer:
ahrayia [7]3 years ago
3 0
It's the second one
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Please help! .........
stira [4]

Answer:

1) When x is 1, y is 4, and vice versa

2) When x is -6, y is 42, and when x is 7, y is 114

3) When x is -2, y is 2, and when x is 8, y is 42

Step-by-step explanation:

1)

y=x^2-6x+9

y+x=5 which can be rearranged as y=5-x.

Substituting this lone y into the first equation, you get:

5-x=x^2-6x+9

Move everything to one side:

x^2-5x+4=0

Factor:

(x-4)(x-1)=0

x=1, 4

y=4, 1

2)

y-30=12x which can be rearranged as y=12x+30.

y=x^2+11x-12

Let's use elimination this time and subtract the first equation from the second:

0=x^2-x-42

Factor:

(x-7)(x+6)=0

x=-6, 7

y= -42, 114

3)

y=x^2-2x+6

y=4x+10

Let's set the two equations equal to each other through substitution:

x^2-2x-6=4x+10

Move everything to one side:

x^2-6x-16=0

Factor:

(x-8)(x+2)=0

x=-2, 8

y= 2, 42

Hope this helps!

6 0
3 years ago
In the name katherine, fine the ratio of consonants to vowels. PLEASE HELP 100 POINTS WORTH!!!!!!!​
Andrei [34K]

Answer:

5:4

Step-by-step explanation:

separate katherine into consonants:

kthrn

and vowels:

aeie

there are 5 consonants and 4 vowels, so the ratio is 5:4.

5 0
3 years ago
Read 2 more answers
What is the domain and range of the relation shown in the table?
zysi [14]
Domain is all the x values (2,-1,4,-3)and range is the y values (0,4,2,0)
7 0
3 years ago
Need help gotta turn in at midnight​
blondinia [14]

Answer:

c.

Step-by-step explanation:

If its isoceles, then LM is equal to LN. This means 3x-2 = 2x+1. 3x minus 2x is x. 2 plus 1 is 3. So x = 3. So it needs to be c or d. since LM and LN are the same answers, go to MN and find the answer. If you siubstitute 3 for x in 5x-2, then you get 13.

6 0
2 years ago
What is 56.6 repeating when rounded to the nearest .1
vesna_86 [32]
56 6 repeating when rounded to the nerest .1 is 56.7
8 0
3 years ago
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