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nexus9112 [7]
3 years ago
10

A set of silverware contains 30 pieces. The set contains only spoons, forks, and knives. It contains the same number of spoons a

nd forks and twice as many spoons as knives. How many forks are there in the set?
Mathematics
2 answers:
Tema [17]3 years ago
5 0
Let the number of knife be x.
Knife = x
Spoon = 2x
forks = 2x

Total = 30
x + 2x + 2x = 30
5x = 30 
x = 6

Knife = x = 6
forks = 2x = 12
Spoon = 2x = 12

Answer: There are 12 forks.

larisa86 [58]3 years ago
5 0
S = f   (where s = number of  spoons and f = number forks)
s = 2k ( k = number of knives)
s + f + k = 30
2s + k = 30 ( because  s = f)
4k + k = 30
k = 6 
Number of forks (f) =  twice number of  knives = 2*6 = 12 Answer



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Step-by-step explanation:

y = ax + b

I see already the result (y = x/10 × 1/6), but let's go in formally.

we have multiple function points to use to officially calculate a and b.

1/6 = a×10 + b

2/3 = a×40 + b

5/6 = a×50 + b

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let's e.g subtract equation 1 from equation 3.

4/6 = a×40 + 0

a = 4/40 / 6 = 4 / 240 = 1/60

1/6 = 10/60 + b

1/6 = 1/6 + b

b = 0

so, the function is

y = x/60

x = 25

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3 years ago
If the length of a rectangular garden is 2 feet less than the length of a house and the width of the garden is 5 feet less than
Goshia [24]

Answer:

A(h)  =  h²/2 - 6*h + 10

Step-by-step explanation:

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A(r) = L*w

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Now if we call "h" the length of the house, we have the following expressions

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The expression for the area f the ectangle as a function of the length of the house is:

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statuscvo [17]

(3,5) is the answer i think

hope it helpss

8 0
3 years ago
I need help with this will mark u as brainliest.
Amanda [17]
1. B
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4 years ago
5 points
noname [10]

Answer:

A. y=10x+50

Step-by-step explanation:

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