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geniusboy [140]

3 years ago

8

Suzi starts her hike at an elevation below sea level when she reaches the end of the hike she is still below sea level at -127 f

eet what was the change in elevation from the beginning of suzi's hike to the end of the hike

2 answers:

Tcecarenko [31]3 years ago

4 0

egfszdrbfhtzdsgdsgrfbstrefwgnfhdtfqewheregeazs

goblinko [34]3 years ago

4 0

Answer:

wait whats the answer

134?

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kelly is using a bucket to fill up a barrel with water from a well. The barrel holds 25.5 liters.the bucket holds 800 millileter

SVEN [57.7K]

To determine how much of the barrel is left to fill, you must subtract the amount of water already in it from the total mass of the bucket.

25.5 - 5.2 = 20.3 Litres

In order to the fill the entire barrel, Kelly must collect 20.3 Litres of water. You must then covert the measurement from litres to millilitres so that the bucket and barrel are measured in the same units.

20.3L = 20300mL

You must then divide the amount of space left by the mass of the bucket. This will determine the least number of buckets needed to fill the barrel.

20300 <span>÷ 800 = 25.375

That means the you would have to do a minimum on 25.375 buckets to fill the barrel, or 26.

Hope this helps :) </span>

6 0

3 years ago

Find the volume of the cone shown as a decimal rounded to the tenth. 22m 12m

Luda [366]

Answer:

b

Step-by-step explanation:

the volume (V) of a cone is calculated as

V = $\frac{1}{3}$ πr²h ( r is the radius , h is the height )

here diameter = 12 , so r = 12 ÷ 2 = 6 and h = 22 , then

V = $\frac{1}{3}$ π × 6² × 22

= $\frac{1}{3}$ π × 36 × 22

= $\frac{1}{3}$ π × 792 ( cancel 3 and 792 by 3 )

= π × 264

≈ 829.4 m³ ( to the nearest tenth )

3 0

2 years ago

How to unscramble this word nioarlta

Zielflug [23.3K]

Since this is in the Mathematics subject my best answer would be Rational.

6 0

3 years ago

Simplify: -4b^6 + (-26b^6)

DENIUS [597]

Answer:

-30 $b^{6}$

Step-by-step explanation:

-4b^6 + -24b^6 = -30b^6

7 0

3 years ago

Many utility companies promote energy conservation by offering discount rates to consumers who keep their energy usage below cer

aleksley [76]

Answer:

a. 0.1681 = 16.81% probability that all five qualify for the favorable rate.

b. 0.5283 = 52.83% probability that at least four qualify for the favorable rates

Step-by-step explanation:

For each Puerto Rico resident, there are only two possible outcomes. Either they qualify for discounted rates, or they do not. The probability of a person in the sample qualifying for discounted rates is independent of any other person in the sample. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

70% of the island residents of Puerto Rico have reduced their electricity usage sufficiently to qualify for discounted rates.

This means that $p = 0.7$

Five residential subscribers are randomly selected from San Juan, Puerto Rico

This means that $n = 5$

a. All five qualify for the favorable rate

This is P(X = 5). So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 5) = C_{5,5}.(0.7)^{5}.(0.3)^{0} = 0.1681$

0.1681 = 16.81% probability that all five qualify for the favorable rate.

b. At least four qualify for the favorable rates

This is

$P(X \geq 4) = P(X = 4) + P(X = 5)$

So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 4) = C_{5,4}.(0.7)^{4}.(0.3)^{1} = 0.3602$

$P(X = 5) = C_{5,5}.(0.7)^{5}.(0.3)^{0} = 0.1681$

$P(X \geq 4) = P(X = 4) + P(X = 5) = 0.3602 + 0.1681 = 0.5283$

0.5283 = 52.83% probability that at least four qualify for the favorable rates

5 0

3 years ago