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Firdavs [7]
3 years ago
9

DG¯¯¯¯¯¯ , EG¯¯¯¯¯ , and FG¯¯¯¯¯ are perpendicular bisectors of the sides of △ABC . DG=5 centimeters and BD=12 centimeters. What

is CG ? Enter your answer in the box.
Mathematics
2 answers:
pshichka [43]3 years ago
4 0
Your answer should be 13cm
AysviL [449]3 years ago
4 0
The answer should be 13 cm, I'm taking the same quiz.
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(a) Use the reduction formula to show that integral from 0 to pi/2 of sin(x)^ndx is (n-1)/n * integral from 0 to pi/2 of sin(x)^
Sedbober [7]
Hello,

a)
I= \int\limits^{ \frac{\pi}{2} }_0 {sin^n(x)} \, dx = \int\limits^{ \frac{\pi}{2} }_0 {sin(x)*sin^{n-1}(x)} \, dx \\

= [-cos(x)*sin^{n-1}(x)]_0^ \frac{\pi}{2}+(n-1)*\int\limits^{ \frac{\pi}{2} }_0 {cos(x)*sin^{n-2}(x)*cos(x)} \, dx \\

=0 + (n-1)*\int\limits^{ \frac{\pi}{2} }_0 {cos^2(x)*sin^{n-2}(x)} \, dx \\

= (n-1)*\int\limits^{ \frac{\pi}{2} }_0 {(1-sin^2(x))*sin^{n-2}(x)} \, dx \\
= (n-1)*\int\limits^{ \frac{\pi}{2} }_0 {sin^{n-2}(x)} \, dx - (n-1)*\int\limits^{ \frac{\pi}{2} }_0 {sin^n(x) \, dx\\


I(1+n-1)= (n-1)*\int\limits^{ \frac{\pi}{2} }_0 {sin^{n-2}(x)} \, dx \\
I= \dfrac{n-1}{n} *\int\limits^{ \frac{\pi}{2} }_0 {sin^{n-2}(x)} \, dx \\


b)
\int\limits^{ \frac{\pi}{2} }_0 {sin^{3}(x)} \, dx \\
= \frac{2}{3} \int\limits^{ \frac{\pi}{2} }_0 {sin(x)} \, dx \\
= \dfrac{2}{3}\ [-cos(x)]_0^{\frac{\pi}{2}}=\dfrac{2}{3} \\






\int\limits^{ \frac{\pi}{2} }_0 {sin^{5}(x)} \, dx \\
= \dfrac{4}{5}*\dfrac{2}{3} \int\limits^{ \frac{\pi}{2} }_0 {sin(x)} \, dx = \dfrac{8}{15}\\







c)

I_n=  \dfrac{n-1}{n} * I_{n-2} \\

I_{2n+1}=  \dfrac{2n+1-1}{2n+1} * I_{2n+1-2} \\
= \dfrac{2n}{2n+1} * I_{2n-1} \\
= \dfrac{(2n)*(2n-2)}{(2n+1)(2n-1)} * I_{2n-3} \\
= \dfrac{(2n)*(2n-2)*...*2}{(2n+1)(2n-1)*...*3} * I_{1} \\\\

I_1=1\\






3 0
4 years ago
Apply the Distributive property to rewrite 2(6-x)=3. Choose the correct answer below? *
photoshop1234 [79]

Answer:

12 -2x =3

Step-by-step explanation:

2(6-x)=3.

Distribute

2*6 -2*x = 3

12 -2x =3

4 0
3 years ago
Read 2 more answers
The greatest common factor of 126 and 98 is:<br><br> a) 2<br> b) 7<br> c) 14<br> d) 28
Virty [35]

Answer:

c) 14

Step-by-step explanation:

Find the prime factorization of 98

98 = 2 × 7 × 7

Find the prime factorization of 126

126 = 2 × 3 × 3 × 7

To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 2 × 7

GCF = 14

Have a good day and stay safe!

3 0
3 years ago
8,-67, -99, -91, -59, -81, 46<br> find the average of the following set of integers
konstantin123 [22]

Answer:

The average is -49.

Step-by-step explanation:

You add all numbers and then divide by the numbers that your adding:

8+-67+-99+-91+-59+-81+46= -252

-252/7= -49

7 0
3 years ago
A force of 10 newtons act in a direction 75 above horizontal moving an object 15 meters from (0,0) to (15,0). What is the work d
givi [52]

Answer:

C

Step-by-step explanation:

i think

4 0
3 years ago
Read 2 more answers
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