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3 years ago

MathWiz wya? I need some help with this...show your work <3

Mathematics

2 answers:

denpristay [2]3 years ago

7 0

Answer:

1) -15+8i

2) x^2+2x-5

Step-by-step explanation:

1) apply perfect square formula

(4i)^2+2*4i1+1^2

then simplify

2)remove parentheses

x+1+(x-2)(x+3)

expand (x-2)(x+3)

x+1+x^2+x-6

simplify x+1+x^2-6 = x^2+2x-5

Sergio [31]3 years ago

7 0

Step-by-step explanation:

join id.526 036 9015 ,pas.12345

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-BARSIC- [3]

Answer:

I believe the answer would be 32.64

Step-by-step explanation:

$24 x 36% = 8.64

8.64 + 24 = $32.64

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2 years ago

5/2b+(-25/2)=-10 what is the value of b?

gulaghasi [49]

The value of b in the equation 5/2b+(-25/2) is 1.

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3 years ago

The ratio of girls to boys in a a gardening club was 6:2 there were 16 boy how many are girls

marishachu [46]

Answer:

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Step-by-step explanation:

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2 years ago

Plz help thank you correct ans only

kakasveta [241]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the equation of the locus of a point that moves so that its distance from the line 12x-5y-1=0 is always 1 unit.

leonid [27]

Answer-

The equations of the locus of a point that moves so that its distance from the line 12x-5y-1=0 is always 1 unit are

$12x-5y+14=0 \\ 12x-5y-14=0$

Solution-

Let a point which is 1 unit away from the line 12x-5y-1=0 is (h, k)

The applying the distance formula,

$\Rightarrow \left | \frac{12h-5k-1}{\sqrt{12^2+5^2}} \right |=1$

$\Rightarrow \left | \frac{12h-5k-1}{\sqrt{169}} \right |=1$

$\Rightarrow \left | \frac{12h-5k-1}{13} \right |=1$

$\Rightarrow 12h-5k-1=\pm 13$

$\Rightarrow 12h-5k=\pm 14$

$\Rightarrow 12h-5k=14,\ 12h-5k=-14$

$\Rightarrow 12h-5k-14=0,\ 12h-5k+14=0$

$\Rightarrow 12x-5y-14=0,\ 12x-5y+14=0$

Two equations are formed because one will be upper from the the given line and other will be below it.

4 0

3 years ago