4x4=16
5x5=25
The area is between perfect squares 16 and 25. Then the side length is between 4 cm and 5 cm
Answer:
The answer would be 1/6.
Step-by-step explanation:
Answer:
(x² + 2) (x² - 3)
Step-by-step explanation:
x⁴ - x² - 6
x⁴- 3x² + 2x² - 6
x² (x² - 3) + 2(x² - 3)
(x² + 2) (x² - 3)
Answer:
x = £200
(y = £400)
Step-by-step explanation:
Convert interest rates into decimal format:
3% = 3/100 = 0.03
4% = 4/100 = 0.04
From information given, create 2 equations:
0.03x + 0.04y = 22
0.04x + 0.03y = 20
Rearrange equation 1 to make y the subject:
⇒ 0.03x + 0.04y = 22
⇒ 0.04y = 22 - 0.03x
⇒ y = 550 - 0.75x
Substitute y = 550 - 0.75x into equation 2 and solve for x:
⇒ 0.04x + 0.03(550 - 0.75x) = 20
⇒ 0.04x + 16.5 - 0.0225x = 20
⇒ 0.0175x = 3.5
⇒ x = 200
To find y, substitute found value of x into one of the equations and solve for y:
⇒ 0.04(200) + 0.03y = 20
⇒ 8 + 0.03y = 20
⇒ 0.03y = 12
⇒ y = 400
