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3 years ago

What is -9 minus ( -5 )

Mathematics

2 answers:

Vinil7 [7]3 years ago

6 0

Answer:

-4

Step-by-step explanation:

-9 - (-5)

Double negative = positive

-9 + 5 = -4

S_A_V [24]3 years ago

3 0

The answer would be -4

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If y=26−(3x+2), then x = ?

Anna71 [15]

Answer:

-1/3y +8 = x

Step-by-step explanation:

y=26−(3x+2)

Distribute

y = 26 -3x-2

Combine like terms

y = 24 -3x

Subtract 24 from each side

y -24 = -3x

Divide each side by -3

y / -3 -24/-3 = -3x/-3

-1/3y +8 = x

3 0

3 years ago

How to write half of a number is equal to -5?

Oxana [17]

1/2x=-5 is the answer

7 0

3 years ago

Read 2 more answers

A. (4,0)<br> b. (3,2)<br> c. (6,4) <br> d. (0,0)

belka [17]

(3,2) because it is in the direct center

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3 years ago

Evaluate the expression 8p6

Margaret [11]

Answer:

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Step-by-step explanation:

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3 years ago

Calculus 3 chapter 16

o-na [289]

Evaluate $\vec F$ at $\vec r$ :

$\vec F(x,y,z) = x\,\vec\imath + y\,\vec\jmath + xy\,\vec k \\\\ \implies \vec F(\vec r(t)) = \vec F(\cos(t), \sin(t), t) = \cos(t)\,\vec\imath + \sin(t)\,\vec\jmath + \sin(t)\cos(t)\,\vec k$

Compute the line element $d\vec r$ :

$d\vec r = \dfrac{d\vec r}{dt} dt = \left(-\sin(t)\,\vec\imath+\cos(t)\,\vec\jmath+\vec k\bigg) \, dt$

Simplifying the integrand, we have

$\vec F\cdot d\vec r = \bigg(-\cos(t)\sin(t) + \sin(t)\cos(t) + \sin(t)\cos(t)\bigg) \, dt \\ ~~~~~~~~= \sin(t)\cos(t) \, dt \\\\ ~~~~~~~~= \dfrac12 \sin(2t) \, dt$

Then the line integral evaluates to

$\displaystyle \int_C \vec F\cdot d\vec r = \int_0^\pi \frac12\sin(2t)\,dt \\\\ ~~~~~~~~ = -\frac14\cos(2t) \bigg|_{t=0}^{t=\pi} \\\\ ~~~~~~~~ = -\frac14(\cos(2\pi)-\cos(0)) = \boxed{0}$

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2 years ago