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Masteriza [31]
3 years ago
15

Y is directly related to x and y is 81 when x is 27 the constant of.variation is

Mathematics
1 answer:
s2008m [1.1K]3 years ago
8 0

Answer:

k = 3

Step-by-step explanation:

Given that y and x are directly related then the equation relating them is

y = kx ←  k is the constant of variation

To find k use the condition y = 81 when x = 27

k = \frac{y}{x} = \frac{81}{27} = 3

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Lauren coordinates a construction projects for a cement company. A government project requires constructing two rectangular conc
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Answer:

7

Step-by-step explanation:

Total concrete for slabs

24 * 24 * 1 = 576 ft³

Additional 20 %

By rule of three      

if     576       ⇒    100

        x??      ⇒     20           x = 115,2

And there are 2 slabs, the total volume of concrete is:

Q(t)  = 2* (576 + 115,2 )      Q(t)  =  1382,4 ft³   (1)

If the truck can carry a maximum of 8 yd³, as 1 ft³  = 0,037 yd³

then a truck can carry a maximum of

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5 0
3 years ago
A clock face a circumference of 166 cm. what is the diameter
Ratling [72]

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Step-by-step explanation:

Circumference is diameter times pie to divide the circumference  by pie.

166/3.14    use 3.14 as an approximation for pie.

166/3.14 = 52.87  rounded to the nearest hundredth

8 0
3 years ago
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U − -23<br> _______ = -8<br> -9 <br><br> Solve for u<br> Thanks!
Romashka [77]

Answer:

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Step-by-step explanation:

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Lets multiply by -9 the whole equation

u - -23=-8*9

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- * - = +

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So, our equations becomes>

u+23=-72

Lets now subtract 23 to both sides

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A sphere with center A is shown. Which represents a radius?
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