All categories

3 years ago

-(5m+1) please help me!!!!!!!!

Mathematics

1 answer:

Art [367]3 years ago

4 0

Answer:

-5m-1

Step-by-step explanation:

You have to multiply the negative sign by 5m and 1.

(-)(5m)= -5m

(-)(1)= -1

-5m - 1

You might be interested in

Derive these identities using the addition or subtraction formulas for sine or cosine: sinacosb=(sin(a+b)+sin(a-b))/2

Sergeu [11.5K]

Answer:

The work is in the explanation.

Step-by-step explanation:

The sine addition identity is:

$\sin(a+b)=\sin(a)\cos(b)+\cos(a)\sin(b)$ .

The sine difference identity is:

$\sin(a-b)=\sin(a)\cos(b)-\cos(a)\sin(a)$ .

The cosine addition identity is:

$\cos(a+b)=\cos(a)\cos(b)-\sin(a)\sin(b)$ .

The cosine difference identity is:

$\cos(a-b)=\cos(a)\cos(b)+\sin(a)\sin(b)$ .

We need to find a way to put some or all of these together to get:

$\sin(a)\cos(b)=\frac{\sin(a+b)+\sin(a-b)}{2}$ .

So I do notice on the right hand side the $\sin(a+b)$ and the $\sin(a-b)$ .

Let's start there then.

There is a plus sign in between them so let's add those together:

$\sin(a+b)+\sin(a-b)$

$=[\sin(a+b)]+[\sin(a-b)]$

$=[\sin(a)\cos(b)+\cos(a)\sin(b)]+[\sin(a)\cos(b)-\cos(a)\sin(b)]$

There are two pairs of like terms. I will gather them together so you can see it more clearly:

$=[\sin(a)\cos(b)+\sin(a)\cos(b)]+[\cos(a)\sin(b)-\cos(a)\sin(b)]$

$=2\sin(a)\cos(b)+0$

$=2\sin(a)\cos(b)$

So this implies:

$\sin(a+b)+\sin(a-b)=2\sin(a)\cos(b)$

Divide both sides by 2:

$\frac{\sin(a+b)+\sin(a-b)}{2}=\sin(a)\cos(b)$

By the symmetric property we can write:

$\sin(a)\cos(b)=\frac{\sin(a+b)+\sin(a-b)}{2}$

3 0

3 years ago

Help please ?!?!?!!???????!???!???!!????!!??!??!?!?!!??!?!!????

Jobisdone [24]

I would guess positive linear considering it’s a positive graph that looks basically linear.

4 0

2 years ago

Help help help help

stich3 [128]

Answer:

i think the first graph is the correct

5 0

2 years ago

Find the 7th term of the geometric sequence -5, 15, 45, 135, 405,...

katovenus [111]

Answer:

1,215

Step-by-step explanation:

Because if you think of it it multiplies by 3x so 3x5=? 15! 15x3=? 45! 45x3=? 405! 405x=3? 1,215! 1,215x3=? 3,645! anyways, I can go on and on I hope this answer was right!

7 0

3 years ago

Ben is 3 times as old as Daniel and is also 4 years older than Daniel.<br> How old is Daniel?

Georgia [21]

B=3d and b=d+4

Since b=b we can say:

3d=d+4 subtract d from both sides

2d=4 divide both sides by 2

d=2

Daniel is 2 years old. (and Ben is 6 years old)

5 0

3 years ago