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3 years ago

State whether the equation represents exponential growth, exponential decay, or neither. y=2*0.68^x

Mathematics

2 answers:

faltersainse [42]3 years ago

8 0

an exponential equation will look like

y = a(b)ˣ

now, the tale-tell guy is the "b" component, or growth/decay factor.

if "b" is less than 1, is decay, if "b" is greater than 1, is growth.

in this case b = 0.68, that's less than 1, so decay.

VladimirAG [237]3 years ago

5 0

Answer:

y=2*0.68^x = exponential decay

Step-by-step explanation:

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In how many ways can a

Tomtit [17]

Answer:

The answer is 364. There are 364 ways of choosing a recorder, a facilitator and a questioner froma club containing 14 members.

This is a Combination problem.

Combination is a branch of mathematics that deals with the problem relating to the number of iterations which allows one to select a sample of elements which we can term "<em>r</em>" from a collection or a group of distinct objects which we can name "<em>n</em>". The rules here are that replacements are not allowed and sample elements may be chosen in any order.

Step-by-step explanation:

Step I

The formula is given as

$C (n,r) = \frac{n}{r} = \frac{n!}{(r!(n-r)!)}$

n (objects) = 14

r (sample) = 3

Step 2 - Insert Figures

C (14, 3) = $(\frac{14}{3})$ = $\frac{14!}{(3!(14-3)!)}$

= $\frac{87178291200}{(6 X 39916800)}$

= $\frac{87178291200}{239500800}$

= 364

Step 3

The total number of ways a recorder, a facilitator and a questioner can be chosen in a club containing 14 members therefore is 364.

Cheers!

6 0

3 years ago

Two boys who live 14 miles apart start at noon to walk toward each other at rates of 3 mph and 4 mph respectively. In how many h

aniked [119]

Since you have the answers given, just track their walking.
After one hour, one guy has covered 3mi and the other 4mi, which is in total 7, not 14
After 2 hours, one guy has covered 6mi and the other 8mi, which is 14mi

The algebraic way would be:
3x +4x = 14 *x being the hour
7x = 14
x =2

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3 years ago

Read 2 more answers

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Rama09 [41]

Answer:

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Step-by-step explanation:

.00019

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2nd 0: hundredths

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arlik [135]

Answer:

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2 years ago