Answer:one yard costs $15 (x=15)
Step-by-step explanation:
300-60=240. So, 16 yards=$240
16x=240
240/16=15
X=15 (one yard costs $15)
Yes, that like will divide the side in proportion
Answer:
x = ±2√7
Step-by-step explanation:
Take the square root and simplify.
Please use " ^ " to denote exponentiation:
<span>f(x) = –(x + 8)^2 – 1
Find the first derivative: f '(x) = -2(x+8)(1)
Set this = to 0: -2(x+8) = 0
solve for x: x = -8
Divide the number line into subintervals based upon x=-8:
(-inf, -8) and (-8, inf)
Choose a test value for x from each interval, e. g., -10 from the first interval and 20 from the second.
Subst. this test value into the derivative, shown above.
If the result is + the function is incr on that interval; if - the fn. is decr.
Questions welcome!</span>
<span>A
scale factor or the similarity ratio is the ratio of two similar geometric figures of their
corresponding sides, volumes or areas. The scale factor is calculated by locating the
corresponding sides on each figure, calculating the volumes and areas and dividing them.
similarity ratio = 2197 m^3 / 512 m^3 = 4.3</span>