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astraxan [27]
4 years ago
7

For what values of x is f(x) = square root of x-4 equal to 4?

Mathematics
1 answer:
zaharov [31]4 years ago
3 0

Answer:

x = 20

Step-by-step explanation:

given f(x) = \sqrt{x-4}, we have to solve

\sqrt{x-4} = 4

Square both sides

(\sqrt{x-4})² = 4²

x - 4 = 16 ( add 4 to both sides )

x = 20

As a check

\sqrt{20-4} = \sqrt{16} = 4 ← correct




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Please help with either of these questions. Put the answer in the comments please
Lena [83]

Answer:

2) distance = 4 km

Displacement = 4 km east

3) distance = 35 km

Displacement = 5 km north

Step-by-step explanation:

2. He runs for 3 km in the east direction and then stops.. He now runs another 1 km in the same direction then stops.. Thus,

Total distance covered = 3 + 1 = 4 km

Total displacement is how far he is from his starting point = 3 + 1 = 4 km east

3) Runs 20km north and then runs 15 km back from starting point.

Thus;

Total distance covered = 20 + 15 = 35 km

Total displacement is distance from starting point = 20 - 15 = 5 km north

Subtracted because an opposite direction was taken after the 20km back to her starting point.

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3 years ago
What is nine and three hundredths as a fraction and decimal?
Ratling [72]
Decimal=9.03 &
fraction= 9 3/100
8 0
3 years ago
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A printer is printing photos, for every 6 photos, the printer takes 2 minutes
patriot [66]
Whats the question? It prints 3 photos a minute.
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3 years ago
Find the​ mean, median, and mode of the​ data, if possible. If any of these measures cannot be found or a measure does not repre
Ber [7]

Answer:

The mean cholesterol levels

= 173873.7

Step-by-step explanation:

For The mean

The mean is going to be sum of the numbers divide by the number

Mean = (130130 +145145+ 215215 +170170+ 165165 +225225+ 240240 +185185+ 130130 +132132 )/10

Mean =1738737/10

= 173873.7

For Median

Wee arrange ascending order

130130, 130130, 132132, 145145, 165165, 170170, 185185, 215215, 225225, 240240

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Median = 167667.5

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4 0
4 years ago
Simplify the following;<br><br> 8v + w + 7 - 8v + 2w<br> 4c² + 6c - 3c² - 2c - 3<br><br> Thanks!
Dominik [7]

Answer:

3w+7

c^2 + 4c - 3

Step-by-step explanation:

8v+w+7-8v+2w

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3w+7

4c^2+6c-3c^2-2c-3

4c^2-3c^2 + 6c-2c -3

c^2+4c-3

3 0
4 years ago
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