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irina [24]
3 years ago
11

You pack sandwiches for a mountain hike with your friends. Each sandwich takes 2 slices of bread and each hiker eats one sandwic

h. How many slices of bread are used for m hikers?
Mathematics
1 answer:
Vadim26 [7]3 years ago
4 0

Answer:

  2m

Step-by-step explanation:

(2 slices/sandwich) × (1 sandwich/hiker) × (m hikers) = 2m slices

_____

"Unit analysis" can be helpful keeping the numbers straight.

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IRINA_888 [86]
The answer is A 18 inches
7 0
3 years ago
A pond has 150 fish and the population decreases by 8% each day. How many days before there are 30 fish
nlexa [21]

Answer:

19 days

Step-by-step explanation:

Given

a = 150 --- initial

r = 8\% -- rate

Required

Days when the fish gets to 30

The function is exponential and as such it follows;

y = ab^x

Where x represents the number of days and y the number of fishes

Because the fishes decreases;

b = 1 - r

So, we have:

b = 1 - 8\%

Express as decimal

b = 1 - 0.08

b = 0.92

In y = ab^x

a =150

y = 30

b = 0.92

So, we have:

30 = 150 * 0.92^x

Divide both sides by 150

0.2 = 0.92^x

Take log of both sides

log(0.2) = log(0.92^x)

Apply law of logarithm

log(0.2) = x\ log(0.92)

Make x the subject

x = \frac{log(0.2)}{log(0.92)}

x = \frac{-0.6990}{-0.0362}

x = 19.309

x \approx 19

<em>Hence, it takes approximately 19 days</em>

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3 years ago
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6 0
3 years ago
Find the 16th term , given the first term and the common difference. a1=8 and d=3
sattari [20]
By using the formula for arithmetic sequence, the 16th term of the progression can be obtained. Given A1=8 and d=3,
A16=A1+(n-1)d
A16=8+(16-1)(3)
A16=53
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Answer:

10

Step-by-step explanation:

6 0
3 years ago
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