Answer:
x = -8
y = 9
Step-by-step explanation:
to solve this expression using simultaneous equation, we would say let
y =9............................................. equation 1
6x + 5y =-3............................................equation 2
substitute equation 1 into equation 2
-3 = 6x + 5y............................................equation 2
6x + 5(9) = -3
6x + 45 = -3
collect the like terms
6x = -3-45
6x = -48
divide both sides by the coefficient of x which is 6
6x/6 = -48/6
x = -8
therefore y = 9
x = -8
Answer:
x=2
Step-by-step explanation:
2x+8=-3.5x+19
5.5x=11
x=2
hope it'll help!
thank you 4 asking!
Answer:
<u>The correct answer is C. 9 -√ 105/ 2, 9 + √ 105/ 2</u>
Step-by-step explanation:
Let's find the solutions for the quadratic equation:
x² = 9x + 6
x² - 9x -6 = 0
Using the quadratic formula, we have:
x = [- (-9) +/- √ (-9)² - 4 * 1 * -6]/2 * 1
x = [ 9 +/- √ (81 + 24]/2
x = [ 9 +/- √ (105]/2
<u>x₁ = [ 9 + √ (105]/2</u>
<u>x₂ = [ 9 - √ (105]/2</u>
<u>The correct answer is C. 9 -√ 105/ 2, 9 + √ 105/ 2</u>
Note: Same answer to question 14133688, answered by me today.
Answer:
D.) 28.26x²
Step-by-step explanation:
Diameter (d) = 6x
radius (r) = d/ 2 = 6x / 2 = 3x
area of circle
= π r²
= 3.14 * (3x) ²
= 28.26x²
Answer:
About 6 words per second
Step-by-step explanation:
You have to divide 373 words by 60 seconds giving you 6.21666667 which you then have to round down to 6 words per second.