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Tamiku [17]
3 years ago
9

How do you solve -9+11+(-9)+12

Mathematics
1 answer:
Gnom [1K]3 years ago
7 0
So basically, what you want to do, is just add or subtract everything together.

Think of -9 as a number 9 to the left of a number line, and then you're adding 11 units, moving -9 11 times to the right. Once you do this, you get 2. Now, adding negative 9 is the same thing as moving 2 9 times to the right. Once you do that as well, you'll get -7. And then just move -7 12 units to the right on the number line and you'll get 5.

Haha that was a really bad explanation, but hope I helped!
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Solve the system of equations by substitution and show work.<br> ​​y=−6x+13<br> y=3x+4
sukhopar [10]

Answer: x= 1 , y = 7

Step-by-step explanation:

y = -6x + 13 ................. equation 1

y = 3x + 4 ................ equation 2

substitute y = 3x + 4 into equation 1 , then we have

3x + 4 = - 6x + 13

collect the like terms , we have

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6 0
3 years ago
Read 2 more answers
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OverLord2011 [107]

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2 years ago
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Match the integrals with the type of coordinates which make them the easiest to do.
WARRIOR [948]

Answer:

1. C. cylindrical coordinates

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Step-by-step explanation:

USE THE BOUNDARY INTERVALS TO IDENTIFY

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2. ∭E z^2 dV where E is:  

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3. ∭E z dV where E is:

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4. ∫10∫y^20 1/x dx  ---- This is A CARTESIAN COORDINATES

5. ∬D 1/x^2 + y^2 dA where D is: x^2 + y^2 <=4  This is A POLAR COORDINATES

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3 years ago
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