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4 years ago

What does 6+(-6) equal?

Mathematics

2 answers:

Ganezh [65]4 years ago

4 0

Answer:

Step-by-step explanation:

6+(-6)= 6-6=0

djyliett [7]4 years ago

3 0

The answer is 0 because a positive symbol with a negative symbol is equal to negative so basically you have subtract

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You're planning a BBQ to celebrate your friend's birthday. if hot dogs come in packs of 8,and buns come in packs of 12,what is t

dezoksy [38]

So for this we have to find a number both can fit into. Let's list multiples of both numbers to find it.

8, 16, 24, 32, 40

12, 24, 36, 48

Looks like 24. The answer is 24.

4 0

3 years ago

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99 PNTS!!!!!

Brilliant_brown [7]

Answer:

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3 years ago

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Vector question. Let v=<-2,1> u=<3,-5> , find:

lyudmila [28]

Answer:

1. ) $\vec {v}.\vec{u}= -11$

2.) The angle between v and u is 147.52°.

Step-by-step explanation:

Given:

$\vec {v}= ( -2 , 1 )\\\vec {u}= ( 3 , -5 )$

To Find:

1. $\vec {v}.\vec{u}= ?$

2. $\theta = ?$

Solution:

$\vec {v}.\vec{u}$ is scalar product given as,

$\vec {v}.\vec{u}=|\vec {v}||\vec {u}|\cos \theta$

$|\vec {v}|=|(-2, 1)|=\sqrt{(-2)^{2} +1^{2}}=\sqrt{5}\\|\vec {u}|=|(3, 5)|=\sqrt{(3)^{2} +(-5)^{2}}=\sqrt{34}$

$\vec {v}.\vec{u}=(-2i +j).(3i-5j)\\$

Here only i.i = j.j =1 and i.j = j.i = 0

∴ $\vec {v}.\vec{u}=(-2\times 3 +1\times -5)\\\vec {v}.\vec{u}=-6-5=-11 \\$

Now, Substituting the above values we get

$-11=\sqrt{5}\times \sqrt{34}\cos \theta\\ \cos \theta=\frac{-11}{\sqrt{170}} \\ \cos \theta =-0.84366\\\therefore \theta =cos^{-1}(-0.84366)\\\therefore \theta =147.52\°$

As it is negative mean $\theta$ is in Second Quadrant Because Cosine is negative in Second Quadrant.

1. ) $\vec {v}.\vec{u}= -11$

2.) The angle between v and u is 147.52°.

5 0

3 years ago

Find x, if<br>2.25% of x is 630.

miv72 [106K]

2.25/100 x =630
x= 630 x 100/2.25
x= 28000

8 0

3 years ago

C(3) = 4/3x + -4<br><br> solve plsss, i appreciate it

pogonyaev

The equation given is:

c(x) = 4/3x + (-4)

Plug in 3 and solve:

c(3) = 4/3(3) + (-4)

c(3) = 12/3 + (-4)

c(3) = 4 + (-4)

Answer: c(3) = 0

Hope I helped!

-Char

8 0

3 years ago