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3 years ago

Please help!! First person gets award or whatever it is!! Awarding 10 points

Mathematics

1 answer:

Gekata [30.6K]3 years ago

5 0

2c^2
Square root

Brainly wants me to have 20 characters so don’t mind the text down here

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a carpenter has a board that is 8 feet long. he cuts off two pieces. one piece is 31/2 Feet long and the other is 21/3 Feet long

LenKa [72]

First, add the two measurements up, then subtract it from 8.

3 1/2 + 2 1/3

Convert to improper fractions:

7/2 + 7/3

Convert to denominators of 6:

21/6 + 14/6

Add the numerators:

35/6

Subtract from 8:

8 - 35/6

Convert 8 into a denominator of 6:

48/6 - 35/6

Subtract the numerators:

13/6

Convert to a mixed number:

2 1/6

So 2 1/6 of the board is left.

4 0

3 years ago

Read 2 more answers

Let X be the waiting time for a car to pass by on a country road, where X has an average value of 35 minutes. If the random vari

Gelneren [198K]

Answer:

Probability that the wait time is greater than 37 minutes is 0.3474.

Step-by-step explanation:

We are given that the random variable X is known to be exponentially distributed and X be the waiting time for a car to pass by on a country road, where X has an average value of 35 minutes.

Let X = waiting time for a car to pass by on a country road

The probability distribution function of exponential distribution is given by;

$f(x) = \lambda e^{-\lambda x} , x >0$ where, $\lambda$ = parameter of distribution.

Now, the mean of exponential distribution is = $\frac{1}{\lambda}$ which is given to us as 35 minutes that means $\lambda = \frac{1}{35}$ .

So, X ~ Exp( $\lambda = \frac{1}{35}$ )

Also, we know that Cumulative distribution function (CDF) of Exponential distribution is given as;

$F(x) = P(X \leq x) = 1 - e^{-\lambda x}$ , x > 0

Now, Probability that the wait time is greater than 37 minutes is given by = P(X > 37 min) = 1 - P(X $\leq$ 37 min)

P(X $\leq$ 37 min) = $1 - e^{-\frac{1}{35} \times 37}$ {Using CDF}

= 1 - 0.3474 = 0.6525

So, P(X > 37 min) = 1 - 0.6525 = 0.3474

Therefore, probability that the wait time is greater than 37 minutes is 0.3474.

4 0

3 years ago

11 more than four times a number is 39

Aliun [14]

Hello!

Your answer is: 7

(X = "A number")

"11 more than four times a number is 39" in equation form is: 4X + 11 = 39

to solve, first subtract 11 from both sides:

4X = 28

then divide both sides by 4 to get:

X = 7

I hope this helps, and have a nice day!

4 0

3 years ago

Graph the function y=square root x+6+2. which poits lies on the graph?

Zolol [24]

Hello :
y= √(x+6) +2
answer :
d.(-2,4)
because : when x =-2 y =√(-2+6) +2 = √4 +2 2+2 = 4

7 0

3 years ago

Find the 12th term of following geometric sequence 5, 20,80, 320,

vesna_86 [32]

5, 20, 80, 320, 1280, 5120, 20480, 81920, 327680, 1310720, 5242880, 20971520

The 12th term would be 20,971,520
Everything is being multiplied by 4 each time

5 0

3 years ago