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3 years ago

Find the 20th term of the following sequence. -6, -4,-2, O,...

Mathematics

1 answer:

pav-90 [236]3 years ago

8 0

Step-by-step explanation:

An=-6+(20-1)×2

=-6+19(2)

=-6+38

=32

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Help meeeeeeeee plssss

Kipish [7]

Answer:

5.16 m

Step-by-step explanation:

$\cos( \alpha ) = \frac{bc}{x} \\ \cos(29) = \frac{bc}{5.9} \\ bc = 5.9 \cos(29) \\ bc = 5.16 m$

7 0

3 years ago

Scientists found an animal skull during an excavation and tested the amount of carbon-14 left in it. They found that 55 percent

DanielleElmas [232]

55% of the Carbon is left in the skull.

If A₀ was the original amount of Carbon, the amount of Carbon that is remaining will be 55% of A₀ which equals 0.55A₀

Using the given equation:

$A= A_{o}e^{-0.000124t} \\ \\ 
0.55A_{o}=A_{o}e^{-0.000124t} \\ \\ 
0.55=e^{-0.000124t} \\ \\ 
ln(0.55)=ln(e^{-0.000124t}) \\ \\ 
ln(0.55)=-0.000124t*ln(e) \\ \\ 
ln(0.55)=-0.000124t \\ \\ 
t= \frac{ln(0.55)}{-0.000124} \\ \\ 
t= 4821$

Rounding of to nearest year, we can conclude that the animal was buried 4821 years ago. So option D gives the correct answer

3 0

3 years ago

The number name for this number is six hundred forty million, four hundred nine thousand, two hundred ten

algol [13]

6 x 100 000,000
4 x 10, 000,000
4 x 100 ,000
9 x 1 ,000
2 x 100
1x 10
hope this is what you require = 640,409,210

5 0

3 years ago

Bet u can’t solve this

S_A_V [24]

Answer:

Step-by-step explanation:

Assuming you're solving for p:

$m=2^{-1} *2^p(2^p-1)$

Let $y=2^p$

Now we can re-write the equation with $y$ instead of $2^p$ .

$m=\frac{1}{2} y(y-1)$

$2m=y^2-y$

$y^2-y-2m=0$

Use the quadratic formula to get:

$y = \frac{1+\sqrt{1+8m} }{2}$

$y = \frac{1-\sqrt{1+8m} }{2}$

Therefore, using natural log and log rules:

$2^p = \frac{1+\sqrt{1+8m} }{2}$ , $ln(2^p)= ln(\frac{1+\sqrt{1+8m} }{2})$ , $pln(2) = ln(\frac{1+\sqrt{1+8m} }{2})$ , $p = \frac{ln(\frac{1+\sqrt{1+8m} }{2})}{ln(2)}$

$2^p = \frac{1-\sqrt{1+8m} }{2}$ , $ln(2^p)= ln(\frac{1-\sqrt{1+8m} }{2})$ , $pln(2) = ln(\frac{1-\sqrt{1+8m} }{2})$ , $p = \frac{ln(\frac{1-\sqrt{1+8m} }{2})}{ln(2)}$

If I haven't made any mistakes this should be correct!

7 0

3 years ago

8(1 + 5x) + 5= 13 + 5x

Rufina [12.5K]

Answer:

0 will be answer as shown in image

7 0

4 years ago