3x²+10x=8
3x²+10x-8=0
(3x-2)(x+4)=0
x=2/3 or -4
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Answer:
A. 1/2
Step-by-step explanation:
For 6 to become 3 and 12 to become 6, the (6,12) is being multiplied by 1/2.
Answer:
Step-by-step explanation:
- 20 - 15(2²· 5/4) = Exponent
- 20 - 15(4 · 5/4) = Parenthesis
- 20 - 15(5) = Multiplication
- 20 - 75 = Subtraction
- - 55
Answer: y = 5/2x - 4
Step-by-step explanation:
the equation is y = ax + b (a ≠ 0)
because the slope of the line is 5/2 => a = 5/2
the line passes through (0; -4) => -4 = b
=> the equation is y = 5/2.x - 4
Answer:
AC = √105 ≈ 10 cm (nearest whole number)
Step-by-step explanation:
Use Pythagoras' Theorem: a² + b² = c²
(where a and b are the legs, and c is the hypotenuse of a right triangle)
Give one of the legs = 4cm and the hypotenuse = 11 cm:
⇒ 4² + AC² = 11²
⇒ 16 + AC² = 121
⇒ AC² = 121 - 16
⇒ AC² = 105
⇒ AC = ±√105
As distance is positive, length of AC = √105 ≈ 10 cm (nearest whole number)
