You need 105 children to meet the minimum.
Answer: choice B) 36 degrees
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Work Shown:
Use the law of cosines
c^2 = a^2 + b^2 - 2*a*b*cos(C)
(DF)^2 = (EF)^2 + (DE)^2 - 2*(EF)*(DE)*cos(E)
6^2 = 10^2 + 7^2 - 2*10*7*cos(E)
36 = 100 + 49 - 140*cos(E)
36 = 149 - 140*cos(E)
36 - 149 = -140*cos(E)
-113 = -140*cos(E)
cos(E) = -113/(-140)
cos(E) = 0.80714285714286
E = arccos(0.80714285714286)
E = 36.1822872211523 <<--- see note below
E = 36 degrees
Note: arccos is the arccosine function, or the inverse cosine function. Make sure you are in degree mode
A square has both parallel sides
being the top and bottom
but also both the sides
AND so does a PARALLELogram
BUT a square has ALL right (90 d) angles
and a parallelogram does NOT
ALSO . . . . . SUMMARY . . . . .
The sides of a square are parallel
and all the angles equal 360 degrees,
so it's a parallelogram. BUT a
parallelogram is NOT a square
because a squares angles need to be 90 degrees.
does that answer your question?
So to find out this answer, you need to add 1.6 and 4.6 together. watch the document in order to find out the steps of adding decimals.
the answer will finally be: she spent 6.2 of an hour in her yard.
hope this helps!! in return, i need a brainliest answer please!! :)
Answer:
1st option is the answer
Step-by-step explanation:
blue line: slope is 1 and y-intercept is 1; therefore equation is y= x + 1
red line: slope is -1 and y-intercept is -3; therefore equation is y= -x - 3