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chubhunter [2.5K]
3 years ago
13

Working together, Tyler and Evan painted a fence in 8 hours. If it takes Tyler 12 hours less than it takes Evan to paint the fen

ce, how long does it take Evan to paint the fence alone?
Mathematics
1 answer:
Rudik [331]3 years ago
8 0

Answer:

24hours

Step-by-step explanation:

let Evan be x, Tyler=x-12,equate;1/x+1/(x-12)=1/8,to get x=24 or 4.The correct value of x=24 because if you take x=4 means that Tyler=-8hours which is impossible

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One method for estimating abundance of animals is known as line-intercept sampling. The theory of this method, when applied to A
Kruka [31]

Answer:

0.6848

Step-by-step explanation:

Mean of \hat{p} = 0.453

Answer = 0.453

Standard deviation of \hat{p} :

= \sqrt{\frac{\hat{p}(1-\hat{p})}{n}} = \sqrt{\frac{0.453(1-0.453)}{100}} = 0.0498

Answer = 0.0498

P(0.0453 - 0.05 < p < 0.0453 + 0.05)

On standardising,

= P(\frac{0.0453-0.05-0.0453}{0.0498} <Z<\frac{0.0453+0.05-0.0453}{0.0498})

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3 0
3 years ago
WILL GIVE BRAINIEST As a fundraiser the school has a pie eating contest. Matt eats 2.75 pies in 300 seconds. If Matt eats at a c
romanna [79]

Answer:

0.01

Step-by-step explanation:

300 seconds = 2.75 pies

1 second = (1/300) × 2.75

= 0.009167

Approximately, 0.01 pie

5 0
2 years ago
Consider the function p(c)=2^c+1 . What is p(3)? 8 6 9 -8
Brilliant_brown [7]

Answer:

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Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Simplify the given polynomial expressions as much as possible
bazaltina [42]

Answer:

34a^2 + 21a - 20

Step-by-step explanation:

(12a^2 + 6a -8) - (-22a + 12 - 15a)

12a^2 + 6a - 8 + 22a + 12 - 15a

34^2 + 6a - 8 - 12 + 15a

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How many pieces 3 and three fifths in. long can be cut from 28 metal rods each 15 in.​ long? Disregard waste.
Murrr4er [49]

Answer: 112 pieces


Step-by-step explanation:

1. Rewrite 3^{\frac{3}{5}} as a decimal. Divide the numerator and the denominator of the fractional part and add it to the integer part:

3+0.6=3.6in

2. You know that each metal rod is 15 inches long. Then, you must divide the lenght of each one by 3.6:

pieces=\frac{15in}{3.6in}4.16

3. The waste is 0.16, therefore, you obtain 4 pieces from a metal rod. The total pieces obtained from 28 metal rods are:

total=4pieces*28=112pieces

8 0
2 years ago
Read 2 more answers
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