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2 years ago

B(n)=-4-2(n-1) find the12th term in the sequence

Mathematics

2 answers:

pogonyaev2 years ago

8 0

ANSWER: -26

WHY:

B(12)= -4-2(12-1)
-4-2(11)
-4-22
-26

MARK ME BRAINLIEST PLEASE

bixtya [17]2 years ago

4 0

Answer:

The 12th term in the sequence is b(12)= -26

Step-by-step explanation:

For the 12th term, that means we need to find what the value of b is when n=12

To find b:

Substitute all 'n' with 12 (since its the 12th term)

b(n)= -4-2(n-1)

b(12)= -4-2(12-1)

Solve the equation in order of BEDMAS (aka PEDMAS)

b(12)= -4-2(11)

= -4- (2*11)

= -4-(22)

= -26

The 12th term in the sequence is b(12)= -26

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Let sin(−θ)=−3/5 and tanθ>0. What is the value of cos(−θ)?

Jobisdone [24]

Answer:

The value of Cos (-Ф) $\dfrac{\textrm 4}{\textrm 5}$ .

Step-by-step explanation:

Given Trigonometric function as :

sin( - Ф ) = $\frac{- 3}{5}$

- sin Ф = $\frac{- 3}{5}$

So, sin Ф = $\frac{ 3}{5}$

Now, as sin Ф = $\dfrac{\textrm perpendicular}{\textrm hypotenuse}$

So , $\dfrac{\textrm perpendicular}{\textrm hypotenuse}$ = $\frac{ 3}{5}$

So, perpendicular = 3

And hypotenuse = 5

Now, From Pythagoras Theorem

Base ² = Hypotenuse² - Perpendicular²

Or, Base ² = 5² - 3²

Or, Base ² = 25 - 9

Or, Base ² = 16

∴ Base = $\sqrt{16}$

I.e Base = 4

Now, Cos Ф = $\dfrac{\textrm base}{\textrm hypotenuse}$

So, Cos Ф = $\dfrac{\textrm 4}{\textrm 5}$

Now , Since

Cos ( - Ф ) = Cos Ф

So, Cos ( - Ф ) = Cos Ф = $\dfrac{\textrm 4}{\textrm 5}$

Hence The value of Cos (-Ф) $\dfrac{\textrm 4}{\textrm 5}$ . Answer

6 0

2 years ago

The set of x valúes of a function this is another name of range

marin [14]

Answer:

False?

Step-by-step explanation:

We can't tell what the question is here, but it looks like you want to know about the definition of domain and range.

The set of x-values is the domain.

The set of y-values is the range.

"range" is not another name for the set of x-values.

8 0

2 years ago

Can someone help me understand 1-6 pls

stiks02 [169]

Answer:

Take a look at my notes. I hope this helps.

7 0

3 years ago

three times a number is three more than twice the number which equation can be used to find the value of X the unknown number

Lyrx [107]

Let the value of the number be represented as x.

Then, write out an equation;

3x=2x+3 <--- Solve for x now
3x-2x=3
x=3

Therefore the number is 3.

Hope I helped :)

7 0

2 years ago

Read 2 more answers

Help please hurry need help

Misha Larkins [42]

Answer:

1: D

2: B

3: y=-4x+22

4: y=-8x+26

Step-by-step explanation:

1: Parallel lines have the same slope, and the only one with a slope of 3x is D

2: Perpendicular lines have an opposite slope, so a line with a slope of -1/2 would be 2, so you just flip the number and add or take away a negative sign, depending on the original slope

3: Like I said before, perpendicular lines have an opposite slope, so the slope would be -4. After you've figured that out, you just plug in the numbers given to you (and remember, x is first, y is last)

Plug in: 6=-4(4)+b

You would then solve for b.

6=-16+b

22=b

Then plug that into y=mx+b, with m being the slope (-4) and b being the y intercept (22)

4: The process for finding parallel and perpendicular lines is very similar, except you don't have to change the slope.

Plug in: 10=-8(2)-b

10=-16+b

26=b

Again, plug that into the equation y=mx+b

Hope I could be of help! Sorry if it doesn't make sense, this is my first time on this website.

5 0

3 years ago