By looking at the graph, we can state that:
a) FALSE. the coordinate (1,10) does not belong to the line.
b) FALSE Since the line ends with an arrow, it means that it goes beyond x =10
c) True. if we move along the x axis from lef to right, we cans ee that for every 2 units to the right (songs) the line goes 2 units up (2 dollars)
d) TRUE If we move one unit to the right ( 1 song) the line goes up 1 unit ( one dollar)
Use the left and right triangles. (the two smaller ones -- ACD and BCD)
By similar triangles ACD is similar to BCD
on the left AD/CD is one ratio
On the right CD/DB is the other. These two ratios are equal because they are corresponding parts.
AD / CD = CD / DB
AD = 3
DB = 12
CD = ??
Substitute.
3/CD = CD/12 Cross multiply
36 = CD^2
sqrt(36) = sqrt(CD^2)
CD = 6 <<<<==== Answer.
A <<<<====Answer.
Answer:
Solution given:
a = 12, b = 5, c = 9
We have
: a² = b² + c² – 2bc cos A
12²=5²+9²-2×5×9 cos A
12²-25-81=-90 cos A
cos A=38/-90
A=cos -1(-19/45)
<u>A=115</u>°
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Answer:
3 meters/second
Step-by-step explanation:
acceleration = rate of change of speed (velocity)/change in time
= 16 - 4/4
= 12/4 = 3 m/s
Since M is the midpoint then QM and MR are equal to each other. So by setting them equal to each other we can find the value of x first.
16 + x = 2(x + 2)
16 + x = 2x + 4
16 = x + 4
12 = x
Now we can substitute in the value of x to find the length if QM.
16 + x
16 + 12
28
Hope this helps :)
