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Dahasolnce [82]

4 years ago

14

A spider walked 80 centimeters in the same time that a snail traveled 7 centimeters. How many more centimeters did the spider tr

avel?

2 answers:

almond37 [142]4 years ago

7 0

The spider walked 73 centimeters more than the snail,

That is because to find the difference of the walking of the spider and the snail, subtract the 2 numbers

80 - 7 = 73 centimeters

sladkih [1.3K]4 years ago

5 0

73 centimeters.............. ..

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You have a biased coin for which p(h)=pp(h)=p. you toss the coin 2020 times. what is the probability that you observe 88 heads a

Nat2105 [25]

The question describes a binomial probability with p(h) = p, then p(t) = 1 - p and number of trials (n) = 20

The probability of a binomial distribution is given by

$P(x)=\, ^nC_xp^x(1-p)^{n-x}$

Part A:

The probability of observing 8 heads and 12 tails is given by:

$P(8)=\, ^{20}C_8p^8(1-p)^{20-8}=\, ^{20}C_8p^8(1-p)^{12}$

Part B:

<span>You observe more than 8 heads and more than 8 tails, when you observe 9 heads and 11 tails, 10 heads and 10 tails, and 11 heads and 9 tails.

Therefore, the probability of </span><span>observing more than 8 heads and more than 8 tails</span> is given by:

$P(9)+P(10)+P(11) \\ \\ =\, ^{20}C_9p^9(1-p)^{20-9}+\, ^{20}C_{10}p^{10}(1-p)^{20-10}+\, ^{20}C_{11}p^{11}(1-p)^{20-11} \\ \\ =\, ^{20}C_9p^9(1-p)^{11}+\, ^{20}C_{10}p^{10}(1-p)^{10}+\, ^{20}C_{11}p^{11}(1-p)^{9}$

7 0

3 years ago

My exam is so hard plz help

nevsk [136]

Answer:

There are four correct expressions.

Step-by-step explanation:

Four correct expressions:

${x}^{2} - x - 42$

${x}^{2} +6x −7x −42$

$x(x−7)+6(x−7)$

$2x +6x-7x−42$

Simplify:

${x}^{2} - x - 42$

$(x+6)(x−7)$

$x(x−7)+6(x−7)$

$2x +6x-7x−42$

${x}^{2} −7x+6x−42$

${x}^{2} - x - 42$

<h3>Hope it is helpful....</h3>

6 0

3 years ago

Read 2 more answers

X+8=0 what are the steps for the quation

nadezda [96]

There is only one step
you pass the number in one side and x in othr side of =
x=-8

8 0

3 years ago

Work out the value of 4^0 x 16^0

NNADVOKAT [17]

Answer:

1

Step-by-step explanation:

Anything to the power of 0 is 1. <em>So</em>,

1 x 1 = 1

8 0

3 years ago

Read 2 more answers

A man measured his height and found 5.7 feet. However, after he carefully measured his height a second time, he found his real h

Lina20 [59]

Answer:

percentage error = 12.28%

Step-by-step explanation:

5 x 0.14 = 0.7

5 x 1.14 = 5.7

as increase is not the same as error decrease.

We use the same numbers 12.28% = 0.1228.

5.7 x 0.1228 = 0.69996 = 12.28%

5.7 - 0.69996 = 5.00004 foot. As decrease.

And find it is correct.

His error therefore was 12.28% out.

As we work the first numbers 5.7 and can only x by a number to see 5ft

We take 5.7 x 0.1228 and find 0.69996 when taken from 5.7 ft. is unmistakably 5 foot. (5.00004) ft.

5 0

3 years ago

Read 2 more answers