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snow_lady [41]
3 years ago
13

Summerschool help part 2

Mathematics
1 answer:
GuDViN [60]3 years ago
7 0
Question 7.

A median bisects the side, so AE and EC are congruent, as are CD and DB. Since the triangle is isosceles, the medians AD and BE are also congruent. The appropriate choice is
   All of the above are true.


Next Question.

If two triangles are congruent by SAS, it means the angles between the corresponding sides (the A between the S and the S) have the same value. In this diagram, angle A is between the corresponding sides, but angle B is not. The appropriate choice is
   False
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C

Step-by-step explanation:


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What is the square root of 100
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I believe that the answer to the equation is 10
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9sin(2x) sin (x) = 9cos(x)
nikdorinn [45]

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\sin(2x)  = 2 \sin(x)  \cos(x)  \\ 9( 2 \sin(x)  \cos(x) ) \sin(x)  = 9 \cos(x)  \\ 18 { \sin}^{2} (x)9 \cos(x)  - 9 \cos(x)  = 0 \\ 9 \cos(x) (2{ \sin}^{2} (x) - 1) = 0 \\ 9 \cos(x) = 0 \: or \: 2{ \sin}^{2} (x) - 1 = 0 \\  \sin(x)  =  \pm \frac{1}{ \sqrt{2} }  \\  \cos(x)  = 0 \\ x =  { \cos}^{ - 1} (0) \\ x =  \frac{ \pi}{2}  = 90 \degree \\ x = \frac{ \pi}{2} + 2\pi \: n \:  \forall \: n \:  \in \:  \Z  \\ = 90 \degree +  360\degree\: n \:  \forall \: n \:  \in \:  \Z \\  =  \pm\frac{ \pi}{4}  \pm2\pi \: n \:  \forall \: n \:  \in \:  \Z \\ x =  \pm45\degree  \pm 360\degree\: n \:  \forall \: n \:  \in \:  \Z

8 0
2 years ago
Mr. McGregor went to Target to buy four pairs of dress socks. There was a 30% off sale on the socks, and his total bill before t
Lena [83]

Answer:

Each pair of socks cost $4.55

Step-by-step explanation:

14*.30=4.2

14+4.2=18.2

18.2/4= 4.55

4 0
3 years ago
Read 2 more answers
Use the drop down menus to describe the relationship between the number of teaspoons and number of tablespoon
Keith_Richards [23]

Answer:

From the given picture we can see that , 3 teaspoons = 1 table spoon.....(1)

or 3t=b..(2)

6 teaspoon= 2 tablespoon or 6t=2b

9 teaspoon= 3 table spoon or 9t=3b

Therefore the ratio of teaspoon to tablespoon t:b= 3:1...........(from (1))

Now, 1 tea spoon=\frac{1}{3}\ tablespoon..............[divide 3 on both sides of (1)]

or t=\frac{1}{3}b

The equation to show the relation between teaspoons and table spoon is given by (2)

3t=b

6 0
3 years ago
Read 2 more answers
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