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guajiro [1.7K]
3 years ago
7

What is the solution to this equation? -15x=90

Mathematics
2 answers:
nydimaria [60]3 years ago
5 0
The solution=90/-15=-6=D
likoan [24]3 years ago
5 0

-15x = 90

Divide by 15

-x = 6

x = -6

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Vsevolod [243]
The answer:  [B]:  h = 2A / (b1 + b2) .
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Explanation:

Given:  A = (½) * (b1 + b2) * h ; 
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→Multiply EACH side of the equation by "2", to get rid of the fraction, "<span>½";
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  → 2*A = 2 *  (½) * (b1 + b2) * h ; 

  → 2* A = 1 * (b1 + b2) * h ;
 
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  →   2A  / (b1 + b2) =  [(b1 + b2) * h] / (b1 + b2) ;

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8 0
4 years ago
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6 0
4 years ago
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Pepsi [2]

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Step-by-step explanation:

Used an online calculator for this answer...

Using the Quadratic Formula where

x = \frac{ -b \pm \sqrt{b^2 - 4ac}}{ 2a }\\x = \frac{ -(-6) \pm \sqrt{(-6)^2 - 4(3)(-12)}}{ 2(3) }\\x = \frac{ 6 \pm \sqrt{36 - -144}}{ 6 }\\x = \frac{ 6 \pm \sqrt{180}}{ 6 }

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Simplify the radical...

x = \frac{ 6 \pm 6\sqrt{5}\, }{ 6 }\\x = \frac{ 6 }{ 6 } \pm \frac{6\sqrt{5}\, }{ 6 }\\x = 1 \pm \sqrt{5}\,

This simplifies to...

x = 3.23607\\x = -1.23607

3 0
4 years ago
What is the diameter of 8cm in circle form?​
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Answer:

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Step-by-step explanation:

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frosja888 [35]
( x,y ) -> y is second number
so y=9.
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4 years ago
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