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3 years ago

10

I need help finding the domain and range of the graph shown. I put (infinity, 2) for the domain and it was wrong. I am not sure

how to solve correctly.

1 answer:

Ede4ka [16]3 years ago

7 0

The domain is $[-1,2)$ , while the range is $(0,4]$ .

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A nurse mixes 50 cc of a 60% saline solution with a 20% saline solution to produce a 28% saline solution. How much of the 20% so

Alex17521 [72]

Answer:

200 cc

Step-by-step explanation:

Let x be the added 20% solution.

<u>The salt content is same:</u>

50*0.6 + x*0.2 = 0.28*(x + 50)
30 + 0.2x = 0.28x + 14
0.28x - 0.2x = 30 - 14
0.08x = 16
x = 16/0.08
x = 200

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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I don’t understand this equation please help me

Reika [66]

Answer:

Evaluated, you get 4x^4

Step-by-step explanation:

Differentiated, you get 16x^3

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8 0

2 years ago

Mark ran 875 miles this year in the track club.Mark ran in 52 track meets and ran the same number of miles in each.How many mile

shepuryov [24]

Answer:

The number of miles Mark runs in each track be $16 \frac{43}{52}\ miles$

Step-by-step explanation:

Let us assume that the number of miles Mark run in each track meet be x.

As given

Mark ran 875 miles this year in the track club.

Mark ran in 52 track meets and ran the same number of miles in each.

Than the equation becomes

52 × x = 875

$x = \frac{875}{52}$

$x = 16 \frac{43}{52}\ miles$

Therefore the number of miles Mark runs in each track be $16 \frac{43}{52}\ miles$

7 0

3 years ago

Find the 78th term of the arithmetic sequence<br> -12,-13,-14,

creativ13 [48]

Answer:

-89

Step-by-step explanation:

The first term of the sequence is a1 = -12.

The common difference between terms is ...

d = -13 -(-12) = -1

The generic term is given by ...

an = a1 +d(n -1)

Then the 78th term is ...

a78 = -12 +(-1)(78 -1) = -12 -77

a78 = -89

8 0

2 years ago