3 years ago

Why can’t we add 5x and 11 together

Mathematics

1 answer:

Pani-rosa [81]3 years ago

4 0

Because they don’t have the same variables

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Is (6,1)(8,-3)(6,7) a function

pochemuha

Answer:

No It's not

Step-by-step explanation:

Since

x=6 produces y=1 and y=7, the relation (6,1),(8,−3),(6,7) is not a function.

The relation is not a function.

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3 years ago

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Someone help please:

frozen [14]

Answer:

The sharing cone holds about 9 times more popcorn than the skinny cone.

Step-by-step explanation:

Cone volume:

$V = \frac{\pi r^{2}h}{3}$

r is the radius and h is the inches.

Skinny-size cone:

Radius is r, height h. So

$V_{sk} = \frac{\pi r^{2}h}{3}$

Sharing size:

Radius is now 3r. So

$V_{sh} = \frac{\pi (3r)^{2}h}{3} = \frac{9\pi r^{2}h}{3} = 3\pi r^{2}h$

How many times more popcorn?

$r = \frac{V_{sh}}{V_{sk}} = \frac{3\pi r^{2}h}{\frac{\pi r^{2}h}{3}} = \frac{3*3\pi r^{2}h}{\pi r^{2}h} = 9$

The sharing cone holds about 9 times more popcorn than the skinny cone.

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3 years ago

The mean temperature for the first 7 days in January was 4 °C. The temperature on the 8th day was 3 °C. What is the mean tempera

Bad White [126]

Answer:

Mean temperature for the first 8 days was $3.88^\circ$

Step-by-step explanation:

Mean = $\frac{4\cdot 7+3\cdot 1}{8}$

$=3.88^\circ$

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