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Lady_Fox [76]
3 years ago
9

What is the Value of the expression below when y=4 and z=4? 6y-3z

Mathematics
1 answer:
VLD [36.1K]3 years ago
8 0

Answer: 12

Step-by-step explanation:

6y - 3z

6(4) - 3(4)

24 - 12

12

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Answer:

It is the third option: (10C1) (20C1( / 50C2.

Step-by-step explanation:

The number of ways of selecting 2 marbles = the number of combination of any 2 marbles in the 50 marbles in the bag and this is 50C2. It is combinations because the order of drawing the marbles does not matter.

The number of combinations  of one being red and the other blue =  10C1 times 20C1.

So the answer is (10C1) (20C1( / 50C2.

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3 years ago
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If t varies 1/s and t=2 when s=60 find the relationship between t and s, b, find the value of t when s=90 c, find s when t=2,1/2
suter [353]

Answer:

t = k \frac{1}{s}  \\ 2 = k. \frac{1}{60} \\ k = 120 \\ k \:  \: is \: constant \: of \: variation \\ relationship \: is  \\ t =  \frac{120}{s} . \\ when \: s \:  = 90 \\ t =  \frac{120}{90}  \\ t =  \frac{4}{3}  \\ when \: t = 2 \frac{1}{2}  \\ s =  \frac{120}{2 \frac{1}{2} }  \\ s = 48

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1. What is the slope of a line that passses through (-1,-5) and (6, 8)?
elena-s [515]

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Step One: Identify two points on the line.

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Step Three: Use the slope equation to calculate slope.

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Step-by-step explanation:

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