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nuncasemeoovideo999
25.10.2020 •
Mathematics
What is the interval of decrease?
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Ответ:
D. (-infinity, 2)
This is the interval![-\infty < x < 2](/tpl/images/0838/6152/9601c.png)
On this interval, the function curve is going downhill as you read it from left to right.
More technically, the function is decreasing on this interval because f(a) > f(b) where a < b. For example, f(0) > f(2) and note that 0 < 2.
Ответ:
1) AC = 13
The formua does not actually apply to all of the problems.
Step-by-step explanation:
1) The absolute value of -8 is added to the absolute value of 5. 8+5=13
2) Subtract the length of the EF from EG to get the length of FG 21 -6 = 15
3) Take what's given and create an equation to solve. 4x + 15 +39 =110. 4x = 110 - (15+39).
4x =110-54. 4x =56. x=56/4. x=14
4) Create another equation. You have two segments that add up to the length of EG, given =23
EF+FG=EG
(2x-12)+(3x-15)=23
5x - 27 = 23
5x= 23+27 5x =50. x = 10
Substitute 10 for x
EF=2(10) -12 EF=8
FG=3(10)-15. FG=15
EF+FG =EG.
8 + 15 = 23
5) 2/5 of 25 is 10 So EF is 10. Subtract from 25 to get FG
FG = 15
I hope this helps you.