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liubo4ka [24]
3 years ago
7

Math help? One question?

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
3 0
My triangle solver says EF ≈ 7.5 ft.

_____
The law of cosines is usually used for this.

EF^2 = DE^2 +DF^2 -2*DE*DF*cos(D)
.. = 6^2 +11^2 -2*6*11*cos(40°)
.. ≈ 55.88

EF ≈ √55.88 ≈ 7.5 . . . ft

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nikitadnepr [17]
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7 0
3 years ago
How do I do this trying my best but I can’t please help T_T
Sever21 [200]

Use algebra.

Let the number of stickers each had in the beginning = x stickers.

Ray lost 10 we represent this by

x - 10 ( = no. stickers he has now)

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Rays has 1/4 as much as Tom so we can now create the equation

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Soling for x:-

1/4 x + 50 = x - 10

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Answer they had 80 stickers at first.

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3 years ago
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Step-by-step explanation:

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3 years ago
If m ≤ f(x) ≤ M for a ≤ x ≤ b, where m is the absolute minimum and M is the absolute maximum of f on the interval [a, b], then m
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A square is cut into three equal rectangles. How does the area of the square compare to the sum of the areas of the three rectan
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A?

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