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4 years ago

X + 12 = -5. solve using subtraction property of equality.

Mathematics

2 answers:

lys-0071 [83]4 years ago

7 0

Since is addition you do the opposite and subtract 12 from 12 and -5 then 12 cancels out and -5-12=-17

nalin [4]4 years ago

6 0

Answer:

Step-by-step explanation:

Here is a simpler way:

subtract 12 from the x side of the equation. do the same to the other side.

Now the equation looks like this x= -17

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expeople1 [14]

Answer:

$9^{4}$

Step-by-step explanation:

9^-5 = 9^4 x 9^-9

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7 0

3 years ago

Find the linear approximation of the function f(x, y, z) = x2 + y2 + z2 at (4, 4, 7) and use it to approximate the number 4.022

miss Akunina [59]

Answer:

80.66

Step-by-step explanation:

$L\left( x \right) = f\left( a \right) + f'\left( a \right)\left( {x - a} \right)$

$f(x, y, z) = x^2+y^2+z^2$

Since we have three variables,

$L(x, y,z) = f(a, b,c) + f_x (a, b,c) (x - a) + f_y (a, b,c) (y - b) +f_z(a,b,c)(z-c)$

$f(4, 4, 7) = 4^2+4^2+7^2=81$

$f_x (a, b,c)=2x=2*4=8\\f_y (a, b,c)=2y=2*4=8\\ f_z(a,b,c)=2z=2*7=14$

Therefore:

$L(x, y,z) = 81+ 8(x - 4) + 8 (y - 4) +14(z-7)$

Using the above:

f(4.02, 3.99, 6.97) =81+ 8(4.02 - 4) + 8 (3.99 - 4) +14(6.97-7)=80.66.

The approximation of $4.02^2 + 3.99^2 + 6.97^2$ is 80.66000.

3 0

3 years ago

Which ordered pair or pairs are solutions to the equation? Select ALL that apply.

mart [117]

Answer:

Step-by-step explanation:

its c because i got 100% on the topic test

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3 years ago

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Svetach [21]

5+w=6
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3 years ago

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Dima020 [189]

Answer:

180

Step-by-step explanation:

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3 years ago

Read 2 more answers