3 years ago

Twice the difference of a number and 5 is equal to three times the sum of the number and 8

Mathematics

1 answer:

Lelu [443]3 years ago

3 0

Answer:

3 and your welcome

Step-by-step explanation:

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when the smallerof two consecutive integers is added to two times the larger,the result is 17.find the integers

Gnesinka [82]

Formula:

x + 2(x+1) = 17
x + 2x + 2 = 17
3x + 2 = 17
3x = 15
x = 5

So, the answer is 5 and 6

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Answer:

3) 10

4) 12

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Step-by-step explanation:

4 0

3 years ago

(x-1)(x-3)(x+5)(x+7)=297

mihalych1998 [28]

First simplify the expression into polynomial form,

$(x-1)(x-3)(x+5)(x+7)=297$

$x^4+8x^3-10x^2-104x+105=297$

$x^4+8x^3-10x^2-104x-192=0$

Now factor into,

$(x-4)(x+8)(x^2+4x+6)=0$

Which means the solutions are,

$x-4=0\implies\boxed{x_1=4}$

$x+8=0\implies\boxed{x_2=-8}$

and then two complex solutions because determinant of the third factor $D\lt0$ ,

$x^2+4x+6=0$

$x^2+4x+4=-2$

$(x+2)^2=-2\implies\boxed{x_3=i\sqrt{2}-2},\boxed{x_4=-i\sqrt{2}-2}$

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3 years ago

Read 2 more answers

Write a linear equation in point slope form points (2,5) and (-4,9)

kvv77 [185]

(2,5) equal 10
(-4,9) equal 5
But if you were taking away 10 - 5 equal 5

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