Answer: -2.8
Step-by-step explanation:
3t-(8/5) * 4-t < -7
(15t-8)/5 * 4-t < -7
((15t-8)(4-t))/5 < -7
(15t^2)-28t-32< -7
(15t^2)-28t-32-7< 0
(15t^2)-28t-39< 0
Using the quadratic/almighty formula
t= (-b +- ((b^2)-4ac)^(1/2)/2a)
a=15, b=-28, c=-39
t= (-(28) +- (((-28)^2)-4(15)(-39))^(1/2))/2(15))
t= -2.8 or t= 0.9
Since
t<0, then t= -2.8
Answer:
This quadrilateral has <u> 2 pairs </u> of parallel sides. Therefore, this quadrilateral is a <u> parallelogram </u>
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Explanation:
The arrow markers on the segments tell us which sides are parallel to one another. The single arrow segments are one parallel pair, while the double arrow segments are the other parallel pair.
By definition, a parallelogram has two pairs of opposite sides that are parallel. If only one pair of opposite sides were parallel, then we'd be dealing with a trapezoid. A square is special type of parallelogram in which all four sides are the same length, and all four angles are the same measure (all four angles are 90 degrees).
b. Any two negative numbers when multiplying gives positive answers which are never between negative numbers. -9*-3=27
c. same logic, positive answer so never less than either negative number.
Answer:
I'm pretty sure it's C. Hope it helped!
Step-by-step explanation:
(12 - 2x)(15 - 2x) = 108
180 - 24x - 30x + 4x² = 108
180 - 54x + 4x² = 108
4x² - 54x + 72 = 0
2x² - 27x + 36 = 0
(2x - 3)(x - 12) = 0
2x - 3 = 0 x - 12 = 0
x = 3/2 x = 12
Since the length of the border must be less than the width, disregard the 12
x = 3/2 = 1.5
Answer: 1.5 ft
