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Zarrin [17]
3 years ago
15

Consider 10 married couples. how many ways can 7 married couples be selected from this group

Mathematics
1 answer:
Novay_Z [31]3 years ago
3 0
10c7
=10!/(7!*(10-7)!)
=120
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Triangle ABC is similar to Triangle DEF. What is the measure of angle DEF? Refer to image, please show work :)
Ne4ueva [31]
Remember, all the interior angles of a triangle equals 180.
So in triangle ABC, it already gives us two out of the three angles. 

First, we add 52 and 36 and that gives us 88.

Now we subtract 88 from 180.

180 - 88 = 92

So that means that ∠ABC is 92°

Now we have to look at triangle DEF. 
The equation says that triangle DEF is similar to triangle ABC.

Looking at the picture, triangle DEF is smaller and is flipped upside down.

So that means that ∠ABC ≈ ∠DEF

In similar triangles, the measurements of angles does NOT change. Just the side length.

So since ∠ABC = 92° that means that ∠DEF = 92°
4 0
3 years ago
A teacher has four books—A, B, C, and D—to assign to four students in any order he prefers. Set S includes all possible arrangem
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3 years ago
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Use a calculator ti find the values of the inverse trigonometric functions. round to the nearest degree.
Tanzania [10]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Can you please help meee
Lubov Fominskaja [6]

Answer: y = 4x + 5/4

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5 0
1 year ago
The profit for a car company can be represented by the function P=−0.5 x² +4 x+ 12,
luda_lava [24]

Answer:

3x+12

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Multiply 0.5x*2=x

= -x+4x+12

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4 0
3 years ago
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