Answer:
D. 55%
Step-by-step explanation:
The error range ± 9% means that the range is 9% below 62% or 9% above 62%.
The range is:
(62% - 9%) to (62% + 9%)
53% to 71%.
The only answer between 53% and 71% is 55%.
Answers A, B, C are all greater than 71%.
Answer:
y = 2(x +1)(x -4)
Step-by-step explanation:
The intercepts are at grid points, so it is easiest to make use of those. For an x-intercept of "a", one of the factors of the function is (x -a). Here, the x-intercepts are -1 and +4, so the function has factors (x +1)(x -4).
When x=0, the product of these factors is (1)(-4) = -4, so there is a vertical scale factor of 2 to make the y-intercept be -8. The function can be written as ...
y = 2(x +1)(x -4)
Answer:
i) 3x
ii) d = 260 - 3x
Step-by-step explanation:
Given:
Conner traveled x feet
Alexandra traveled 2x feet
Total distance = 260 ft
i) The expression in terms of x to represent the total number of feet Conner and Alexandra have walked toward one another will be:
This will be the total number of feet they have walked towards one another
= x + 2x
= 3x
ii) An expression in terms of x to represent the distance (in feet) between Conner and Alexandra.
This will be to find the distance between Conner and Alexandra.
Thus, distance between them will be:
d = 260 - (x + 2x)
d = 260 - 3x
Answer:
No rotation will produce a polyhedron. The solids of rotation are non-polyhedral.
Step-by-step explanation:
Solids of rotation will always have a curved face, so they’re always non-polyhedral.