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RideAnS [48]
3 years ago
13

Martha has 3 cards but she wants more.if she makes 5 cards an hour, how many cards will she have after 6 hours?

Mathematics
2 answers:
xenn [34]3 years ago
7 0

Answer:

33 cards

Step-by-step explanation:

the equation is y=5x+3

3 being the amount she started with and 5 the amount she makes an hour

if we plug in 6hours as x we can get the answer

y=5(6)+3

y=30+3

y=33 cards

Paraphin [41]3 years ago
5 0

Answer:

33 cards

Step-by-step explanation:

3 cards already.  5 in 1 hour = 5 x 6 hours = 30 cards + 3 cards


33 cards

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Old Mc Donald raises ducks and cows. The animals have a total of 100 heads and 354 feet. How many ducks and how many cows does O
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Answer:

The number of ducks Old Mc Donald raises are 23 and the number of cows Old Mc Donald raises are 77.

Step-by-step explanation:

We are given that Old Mc Donald raises ducks and cows. The animals have a total of 100 heads and 354 feet.

Let the number of ducks Old Mc Donald raises be 'x' and the number of cows Old Mc Donald raises be 'y'.

So, according to the question;

  • The first condition states that the animals have a total of 100 heads, that means;

                                   x+y=100

                                    x=100-y  -------------------- [equation 1]

{because one head of a duck and one head of cow}

  • The second condition states that the animals have a total of 354 feet, that means;

                                   2x+4y=354

                                   x+2y=177   --------------- [equation 2]

{because there are two feet of a duck and four feet of cow}

Now, putting the value of x in equation 2 we get;

                                  100-y+2y=177

                                  y=177-100

                                    y = 77 cows

Putting this value of y in equation 1 we get;

                                 x = 100 - y

                                 x = 100 - 77 = 23 ducks

Hence, the number of ducks Old Mc Donald raises are 23 and the number of cows Old Mc Donald raises are 77.

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3 years ago
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Answer:

we are going to place 2 at the place where x is

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5(2)-5

10-5

5 is your answer I believe

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