Answer:
Division property
Step-by-step explanation:
you would need to set up your equation. Then divide -3x by -3 to get x alone. then you do 348 divided by -3 to get your answer
<u>-3x</u>=<u>348</u>
-3= -3
x=-116
Answer:
Step-by-step explanation:
- 10x² - 7ax + (a + 2) (a - 5) =
- 10x² - 7ax + a² - 3a - 10
Factorize by finding the roots
<u>Find the discriminant:</u>
- D = b² - 4ac
- D = (-7a)² - 4*10*(a² - 3a - 10) =
- 49a² - 40a² + 120a + 400 =
- 9a² + 120a + 400 =
- (3a + 20)²
<u>Find the roots:</u>
- x = (- b ± √D)/2a = (7a ± (3a + 20)) / 20
- x₁ = (7a + 3a + 20) / 20 = (10a + 20) / 20 = (a + 2) / 2
- x₂ = (7a - 3a - 20) / 20 = (4a - 20) / 20 = (a - 5) / 5
<u>Factorize the expression:</u>
- 10x² - 7ax + a² - 3a - 10 =
- 10 (x - x₁)(x - x₂) =
- 10[x - (a + 2)/2][[x - (a - 5)/5] =
- (2x - a - 2)(5x - a + 5)
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<u>You would also try a shorter but more difficult way:</u>
- 10x² - 7ax + (a + 2) (a - 5) =
- 2x*5x - 2ax + 10x - 5ax - 10x + (a + 2) (a - 5) =
- 2x*5x - 2x(a - 5) - 5x(a + 2) + (a + 2) (a - 5) =
- 2x(5x - (a - 5)) - (a + 2)(5x - (a - 5)) =
- (5x - a + 5)(2x - a - 2)
Let x be the money Antonio has.
Let y be the money Dominic has.
x-18=y (here, I just put in the equation)
Since we are not given any information about the money that Dominic has or Antonio has, we would have to create an equation that would fit all the situations.
Hope I helped :) <span />
8 is the answer, though I think you could cram the extra ten people into the seventh bus and not hire the eighth one
Answer:
Surface Area = 86 cm^2
Step-by-step explanation:
Given:
Triangle,
b = 8 cm
h = 9 cm
Rectangle,
l = 10 cm
w = 5 cm
To Find:
Surface Area = ?
Solution:
Surface Area = b x h /2 + l x w
Surface Area = 8 x 9 / 2 + 10 x 5
Surface Area = 4 x 9 + 50
Surface Area = 36 + 50
Therefore, Surface Area = 86 cm^2
PLZ MARK ME AS BRAINLIEST!!!
