Answer:
45 x 5 + 12 x 1,800
Step-by-step explanation:
2(x - 5)² + 13 = 31
2(x - 5)(x - 5) + 13 = 21
2(x(x - 5) - 5(x - 5)) + 13 = 21
2(x(x) - x(5) - 5(x) + 5(5)) + 13 = 21
2(x² - 5x - 5x + 25) + 13 = 21
2(x² - 10x + 25) + 13 = 21
2(x²) - 2(10x) + 2(25) + 13 = 21
2x² - 20x + 50 + 13 = 21
2x² - 20x + 63 = 21
<u> - 21 - 21</u>
2x² - 20x + 42 = 0
2(x²) - 2(20x) + 2(21) = 0
<u>2(x² - 20x + 21)</u> = <u>0</u>
2 2
x² - 20x + 21 = 0
x = <u>-(-20) +/- √((-20)² - 4(1)(21))</u>
2(1)
x = <u>20 +/- √(400 - 84)</u>
2
x = <u>20 +/- √(316)
</u> 2
x = <u>20 +/- 2√(79)</u>
2
x = 10 <u>+</u> √(79)
x = 10 + √(79) U x = 10 - √(79)
<u />
Answer:
The principle amount = $4000
Step-by-step explanation:
Formula:
Simple interest I = PTR/100
P - Principle amount
T - Number of years
R - Rate of interest
<u>To find principle amount</u>
Here , P = ?, T = 2 years, R = 5.9% and p + I = $4472
I = PTR/100
P + (P*2**5.9)/100 = 4472
P[1 + 11.8/100] = 4472
P[111.8/100] = 4472
P = (4472*100)/111.8 = 4000
Therefore the principle amount P = $4000
Answer:
I think the answer is c
Step-by-step explanation:
please give me brainlist
Diagonals of a rhombus
In any rhombus, the diagonals (lines linking opposite corners) bisect each other at right angles (90°). That is, each diagonal cuts the other into two equal parts, and the angle where they cross is always 90 degrees.
