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3 years ago

Solve for b -8b-14+5b=11

Mathematics

2 answers:

gavmur [86]3 years ago

5 0

I hope this helps you

Natasha_Volkova [10]3 years ago

5 0

-8b - 14 + 5b = 11...simplify
-3b - 14 = 11...add 14 to both sides
-3b = 11 + 14
-3b = 25
b = -25/3 or -8 1/3

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An object is moving at the constant rate of 32 feet per second.

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3 years ago

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E temperature t of a metal sphere is inversely proportional to the distance from the centre of the sphere (the origin (0, 0, 0))

olasank [31]

(-x, -y, -z) the vector form (x, y, z) to the origin, in the direction of the greatest increase.

<h3>How to calculate temperature?</h3>

The quantity or amount of radiation contained in material or item, as measured by a temperature or sensed by touch and stated on a numerical scale.

The temperature T of a ball bearing is inverse to the length first from the origin, which we consider to be the center of the ball. The temperature at the exact location

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$T(x,y,z)= \dfrac{k}{(x^2 +y^2+z^2)^{1/2}}$

Where k is constant, then we have

T(1, 2, 2) = k/3 = 170

k = 510

$T(x,y,z)= \dfrac{510}{(x^2 +y^2+z^2)^{1/2}}$

Then we have

$\rm \triangledown T = \left ( -\dfrac{510x}{(x^2 +y^2+z^2)^{1/2}}, -\dfrac{510y}{(x^2 +y^2+z^2)^{1/2}}, \dfrac{510z}{(x^2 +y^2+z^2)^{1/2}} \right )\\\\\\\triangledown T (1, 2, 2) = -\dfrac{510}{27} (1, 2, 2) =-\dfrac{170}{9} (1, 2, 2)$

Then the direction will be from (1, 2, 2) to (4, 3, 5) will be (3, 1, 3)

So u = (3/√19, 1/√19, 3/√19)

Then we get

$\rm \triangledown T \cdot u = \dfrac{-170}{9}(1, 2, 2) \cdot \left (\dfrac{3}{\sqrt{19}}, \dfrac{1}{\sqrt{19}}, \dfrac{3}{\sqrt{19}} \right )\\\\\\\triangledown T \cdot u = - \dfrac{170}{9\sqrt{19}} (3 + 2 + 6)\\\\\\\triangledown T \cdot u = -\dfrac{1870}{9\sqrt{19}}$

The direction of the greatest inverse in the temperature is given by any vector parallel to and having the same direction $\triangledown$ T. (-x, -y, -z) the vector form (x, y, z) to the origin, in the direction of the greatest increase.

More about the temperature link is given below.

brainly.com/question/11464844

#SPJ4

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2 years ago

Help!!!!!!!!!!!!!!! A square tabletop has side lengths of (4x − 8) units. Enter a polynomial that represents the area of the tab

kherson [118]

Answer: $16x^{2}-64x+64$

Step-by-step explanation:

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$A=s^{2}$

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$(4x-8)^{2}$

3. By definition, the square of a binomial is always a trinomial:

$(a-b)^{2}=a^{2}-2ab+b^{2}$

4. Then, you obtain:

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3 years ago

PLS HELP ILL GIVE 50 POINTS

Sloan [31]

Answer:

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Since we have similar triangles, we can use proportions. Put the small triangle sides over the large triangle side.

WC WD

----------- = -------------

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Using cross products

26*110 = 20* (36x-1)

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Add 20 to each side

2860+20 = 720x-20+20

2880 = 720x

Divide by 720

2880/720 = 720x/720

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We need to find CU

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Substituting in what we know

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3 years ago

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svet-max [94.6K]

Answer: 94,1%

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