Help on geometry please show work with answer please

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Answer 1

Answer: #in addition
#in addition
#in addition

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The area of a triangle is 12 cm squared. If the base of the triangle is 4 cm what is the height

Slope = -5 and goes thorough point (0, 2)

Answers

Answer:

$y=-5x+2$

Step-by-step explanation:

$y-y_(1) =m(x-x_(1) )\ny-2=-5(x)\ny-2=-5x\ny=-5x+2$

You borrow $90 from Grandma. You pay back $15 a week. Write an equation in standard form that represents the amount owed(y) after x weeks.

Answers

$y=90-15x\n\nx\in\{0;\ 1;\ 2;\ 3;\ 4;\ 5;\ 6\}$

Solve the system my elimination 9x + 2y = 9 6x - 2y = -4

Answers

Answer:

x = 1/3 y= 3

Step-by-step explanation:

9x + 2y = 9

6x - 2y = -4

Add the two equations to eliminate y

9x + 2y = 9

6x - 2y = -4

----------------------

15x = 5

Divide each side by 15

15x/15 = 5/15

x = 1/3

Now we need to find y

6x - 2y = -4

6(1/3) -2y = -4

2 -2y = -4

Subtract 2 from each side

2-2y-2 = -4-2

-2y = -6

Divide each side by -2

-2y/-2 = -6/-2

y = 3

Find the exact solution to the equation. Show your work. 4^(12-4x) = 256
(I know the answer is 2, the thing I don't know how to do correctly is showing my work)

Answers

Hello,

$4^(12-4x)=256\n ==\ \textgreater \ \ 2^(24-8x)=2^8\n ==\ \textgreater \ \ 24-8x=8\n ==\ \textgreater \ 8x=16\n ==\ \textgreater \ x=2$

Hi

4^(12-4x) =256
First we need to take log of both sides
log(4^-4x+12) = log (256)
(-4x + 12)(log(4)) = log(256)
so now we have
-4x + 12 = log(256)/log(4)
-4x + 12 = 4
-4x = 4 - 12
-4x = -8
x = -8/-4
x= 2

I hope that's help :)

A line passes through the point (2, 3) and has a slope of -2. Which is the equation of the line in point-slope form? A) 2x + y = 7 B) y = -2x + 7 C) y - 3 = -2(x - 2) Eliminate D) y = - 1 2 x + 5

Answers

In point slope form, y - y1 = m(x - x1)

i.e. y - 3 = -2(x - 2)

What is the equation of the horizontal line that passes through the point (-2, -1)

Answers

Answer:

y= -1

Step-by-step explanation:

A horizontal line would mean that it has no slope, since the line is not decreasing or increasing. The horizontal line drawn through (0, -1) would pass through (-2, -1), since they share the same y coordinate.

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