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3 years ago

Geometry // help with this pleaseeee ASAP

Mathematics

1 answer:

babunello [35]3 years ago

6 0

Answer:

A:SPA =CFA by AA

Step-by-step explanation:

Hopefully this helps

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Use the quadratic formula to solve the equation: 8x(x - 2) - 20 = 5x(x - 4)

FromTheMoon [43]

Answer: $x = 2, -\frac{10}{3}$

Write the equation in standard form: $ax^{2} + bx + c = 0$ .

$8x(x - 2) - 20 = 5x(x - 4)\\\\8x^{2} - 16x - 20 = 5x^{2} - 20x\\\\3x^{2} - 16x - 20 = -20x\\\\3x^{2} + 4x -20 = 0$

Use the quadratic formula. <em>(+-) = </em>±

$\frac{-b (+-) \sqrt{b^{2} - 4ac } }{2a}$

Substitute in the values, where a = 3, b = 4, and c = -20, and simplify.

$\frac{-4(+-)\sqrt{(4)^{2} - 4(3)(-20)} }{2(3)} \\\\\frac{-4(+-)\sqrt{16 + 240} }{6}} \\\\\frac{-4(+-)\sqrt{256} }{6} \\\\\frac{-4(+-)16}{6} \\\\\frac{-4 + 16}{6}, \frac{-4 - 16}{6} \\\\\frac{12}{6}, \frac{-20}{6} \\\\2, -\frac{10}{3}$

$x = 2, -\frac{10}{3}$

3 0

4 years ago

The coefficient of 6x is

Sveta_85 [38]

The coefficient of 6x is 6 , its just the number in front of the variable

5 0

3 years ago

Read 2 more answers

The scale factor is 3:1 what would y and x be ? Having a hard time trying to figure this out

Ainat [17]

$\dfrac{3}{1} = \dfrac{30}{y}$

Cross multiply:
$3y = 30$

Divide by 3:
$y = 10$

Answer: y = 10

$\dfrac{3}{1} = \dfrac{x}{8}$

Cross multiply: $x = 24$

Answer: x = 24

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3 years ago

4/2/3−1/1/3÷2 four and two thirds - one and one thirds divided by two

zhannawk [14.2K]

2/3 two over three I’m pretty sure I’m good at this stuff hope I helped.

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3 years ago

Which of the binomials below is a factor of this trinomial x^2+4x-60

trasher [3.6K]

Suppose x-6 is listed as a possible answer. That is zero if x = 6. So put x=6 into the original x^2 + 4x - 60 to get 6^2 + 4*6 - 60 = 36 + 24 -60 = 0. hence x-6 is a factor.

Answer (x-6)

on this hand :x-5 is not a factor, because plugging x=5 into does not work.

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3 years ago