A. 8.6 × 10¹²
b. 8.6 × 10¹¹
c. 8.6 × 10⁻¹³
d. 8.6 × 10⁻¹³
9514 1404 393
Answer:
(x, y) = (61/23, 36/23)
Step-by-step explanation:
We assume you intend the equations to be ...
Then in general form, they are ...
5x -4y -7 = 0
2x +3y -10 = 0
The solution using the "cross multiplication method" is ...
1/(15 +8) = x/(40+21) = y/(-14 +50)
(x, y) = (61/23, 36/23)
_____
<em>Comment on "cross multiplication method"</em>
When the coefficients from the general form equations are written as a 2×4 array with the first and last columns the same ...
the solution is 1/d1 = x/d2 = y/d3, where d1, d2, d3 are the determinants of successive pairs of columns.
- d1 = (5)(3) -(2)(-4)
- d2 = (-4)(-10) -(3)(-7)
- d3 = (-7)(2) -(-10)(5)
Answer and Step-by-step explanation:
<u>Here is the equation for finding the sides (just to show):</u>
68 = (2L + 2W)
We multiply L and W by 2 because there are two of the lengths and 2 of the widths.
<u>Now, we add the scale factor to the outside, but on both sides of the equation.</u>
68 × 1.5 = 1.5(2L + 2W)
<u>Multiply 68 by 1.5.</u>
102 = 1.5(2L + 2W)
<u>The answer is 102.</u>
<u />
<u />
<em><u>The perimeter of the resulting rectangle is 102 ft.</u></em>
<em><u /></em>
<em><u>#teamtrees #PAW (Plant And Water)</u></em>
Nola will make B. $ 3, 224 in one year.
Answer:
The radius is 10 because the radius is half of the diameter