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3 years ago

What is question number 21?

Mathematics

1 answer:

dexar [7]3 years ago

4 0

I tried working it out but I am not sure

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A team of storm enthusiasts collected data to show the relationship between the time between seeing lightning and then hearing t

never [62]

Answer:

Proportionality constant = $\frac{1}{5}$

Step-by-step explanation:

From the graph attached,

Data set representing the relation between seeing lightning and the hearing thunder is,

{(15, 3), (25, 5), (35, 7), (45, 9)}

Since, Distance from lightening (d) ∝ Time between lightening and thunder (t)

d = kt

Here k = proportionality constant

k = $\frac{d}{t}$

From the data set one point is (15, 3).

k = $\frac{3}{15}$

k = $\frac{1}{5}$ miles per second

Therefore, proportionality constant is $\frac{1}{5}$ miles per second.

3 0

3 years ago

Pleas help will mark brainlest the choices are at the bottom

dusya [7]

Answer:

1. x is greater than -1

2. x is less than or equal to -1

3. x greater than or equal to -1

4. x is less than -1

Step-by-step explanation:

The filled in dots means it could be equal to, non-filled dots mean it can only be greater or less. When the variable is first, look at the direction of the line

6 0

3 years ago

Read 2 more answers

A commuter is driving along a highway on which the speed limit is 45 miles per hour when he unknowingly runs into a speed trap i

Anna71 [15]

Here is a screen shot of what I found...hope this helps =)

3 0

3 years ago

1368 roses are packed in cartons that each hold 28 roses. How many cartons will be needed to hold all of the roses?

Nitella [24]

Answer:

49 cartons

Step-by-step explanation:

1: we need to find how many cartons the roses will fill so

1368/28 = 48.857 cartons.

2: We can't have .857 of a carton, so we need 49 cartons to hold all the roses.

6 0

3 years ago

The __________ cipheris the simplest single-alphabet substitution cipher. it is really just a permutation of the caesar cipher.

mario62 [17]

<span>monoalphabetic cipher uses a fixed subtitution over the entire message</span>

3 0

3 years ago