Answer:
x = 0.19 or x = -0.76
Step-by-step explanation:
Equation: 7²-4x = 2
reordering the equation,
7x²-4x-2 = 0
Applying,
x = [-b±√(b²-4ac)]/2a..................... Equation 1
From the question,
Given: a = 7, b = -4, c = -2
Substitute these values into equation 1
x = [-4±√(-4²-(2×7×-2)]/(2×7)
x = [-4±√(16+28)]/14
x = (-4±√44)/14
Either
x = (-4+√44)/14
x = (-4+6.63)/14
x = 2.63/14
x = 0.19
or
x = (-4-√44)/14
x = (-4-6.63)/14
x = -10.63/14
x = -0.76
Answer:
The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept.
Step-by-step explanation:
The y-intercept of this line is the value of y at the point where the line crosses the y axis.
Answer:
its 3hdnndndjsjshnanajzh z
Answer:
256 students
Step-by-step explanation:
Multiply 0.32 by 800 to get your answer.
Answer:
= 54.78 square units
Step-by-step explanation:
We can calculate the area of the triangle using the formula;
Area = 1/2abSinθ ; where a and b is the sides making the angle θ.
Therefore;
Area = 1/2 bc sin C
= 1/2 × 16 × 7 × Sin 78
= 8 × 7 × sin 78
<u>= 54.78 square units</u>