8
46
is equivalent to 4
23
because 4 x 2 = 8 and 23 x 2 = 46
12
69
is equivalent to 4
23
because 4 x 3 = 12 and 23 x 3 = 69
16
92
is equivalent to 4
23
because 4 x 4 = 16 and 23 x 4 = 92
Answer:
55 meters squared
Step-by-step explanation:
SA = sum of all the areas of the sides
The pyramid has four faces, which we have to add together:
SA = 3(long face area) + base area
Area of a triangle = 1/2 base * height
Area of the base = 1/2 * 3.5 * 4 = 7 meters squared
Area of a long face = 1/2 * 8 * 4 = 16 meters squared
Coming back to our surface area formula, we can plug those areas in:
SA = 3(long face area) + base area
= 3(16) + 7 = <u>55 meters squared</u>
bearing in mind that to get the x-intercept of any expression, we can simply set y = 0, and then solve for "x".
so let's check the slope of that line thus we can use its equation and set y = 0 then.
Answer:
C.72
Step-by-step explanation:
because I just did it
Take the equation and put it into ax² + bx + c = 0.
3x² + 4x - 6 = 0
a = 3
b = 4
c = -6
The quadratic formula is :
x = -b ± √b² - 4ac / 2a
Substitute the values.
x = -4 ± √4² - 4(3)(-6) / 2(3)
x = -4 ± √16 + 72 / 6
x = -4 ± √88 / 6
x = -4 ± 2√22 / 6
Simplify the equation by factoring out the 2.
x = -2 ± √22 / 3
Solutions :
x = -2 + √22 / 3
x = -2 - √22 / 3