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lutik1710 [3]
3 years ago
6

Can someone explain to me how to solve these types of problems ? * will mark bainlyest *

Mathematics
1 answer:
Anni [7]3 years ago
6 0

Answer:

2 i believe

Step-by-step explanation:

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Find all solutions of the system of equations algebraicllally. Write your solutions as coordinate points Y=3x^2- 2x-1 2x+y=11
zloy xaker [14]

Answer:

(- 2, 15 ) and (2, 7 )

Step-by-step explanation:

Given the 2 equations

y = 3x² - 2x - 1 → (1)

2x + y = 11 → (2) ← subtract 2x from both sides

y = 11 - 2x → (3)

Substitute y = 3x² - 2x - 1 into (3)

3x² - 2x - 1 = 11 - 2x ( subtract 11 - 2x from both sides )

3x² - 12 = 0 ( add 12 to both sides )

3x² = 12 ( divide both sides by 3 )

x² = 4 ( take the square root of both sides )

x = ± \sqrt{4} = ± 2

Substitute these values into (3) for corresponding values of y

x = - 2 : y = 11 - 2(- 2) = 11 + 4 = 15 ⇒ (- 2, 15 )

x = 2 : y = 11 - 2(2) = 11 - 4 = 7 ⇒ (2, 7 )

8 0
2 years ago
G(n)= 3n+5 h(n)= 4n-5 Find (g•h)(n)
Paul [167]

Answer:nothing at all

Step-by-step explanation:

Blah

5 0
3 years ago
Question 3
insens350 [35]
I think it is the 3 one
6 0
3 years ago
What is the sum of 31 and the product of 234.
Ne4ueva [31]
The sum of 31 would i think be 15+16 and the product of 234 would maybe be 6 times 39? hope that helps :)
3 0
2 years ago
Inverse of g(x)=2x -8​
aev [14]

Answer:

The inverse is 1/2x +4

Step-by-step explanation:

g(x)=2x -8​

y = 2x-8

Exchange x and y

x = 2y-8

Solve for y

x+8 = 2y-8+8

x+8 = 2y

Divide by 2

1/2 x + 8/2 = 2y/2

1/2x +4 = y

The inverse is 1/2x +4

8 0
3 years ago
Read 2 more answers
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