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antoniya [11.8K]
3 years ago
14

HELP PLEASE! I'll give you the most stars for explaining and giving the answer

Mathematics
1 answer:
never [62]3 years ago
3 0
1. Because each element in the domain is matched exactly with one element I. The range.
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Kelly blends coffee. She mixes brand A costing $6 per kilogram with brand B costing $8 per kilogram. How many kilograms of each
sukhopar [10]

Step-by-step explanation:

Let

x

be the kg of coffee of brand A in the mix and

y

be the kg of coffee of brand B in the mix.

The total kg must be

50

.

x

+

y

=

50

The cost per kg of the mix must br

$

7.20

. For this, the total cost of the mix will be

6

x

+

8

y

, so the total cost per kg of the mix will be

6

x

+

8

y

50

.

6

x

+

8

y

50

=

7.20

Now that we have our two equations, we can solve.

6

x

+

8

y

=

7.20

⋅

50

6

x

+

8

y

=

360

From the first equation, we can multiply both sides by

6

to get:

6

x

+

6

y

=

300

Subtracting, we get:

2

y

=

60

y

=

30

Thus, we need

30

kg of brand B in our mix. This means that

50

−

30

=

20

kg will be of brand A.

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2 years ago
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Answer:

I am looking for this anwer to

Step-by-step explanation:

8 0
3 years ago
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tia_tia [17]
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Roberto finished 2/3 of the race in 4 hours. How long is the entire race?
Tcecarenko [31]

Answer:

6 hours

Step-by-step explanation:

because it took 4 hours to do 2/3 meaning that in one hour it took 2 hours so due to 3/3 being done at 2 hours a piece puts it at 6 hours

6 0
2 years ago
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