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4 years ago

Someone please help!

Mathematics

1 answer:

pav-90 [236]4 years ago

7 0

We need to find an expression which will help Sara calculate the total weight of the truck.

By hypothesis, we know that x represents the number of cans in the truck. And each can weigh 14 ounces, so the total weight of the cans in the truck is 14*x = 14x.

Now in the truck, there's a total of 840 cans and bottles combined. And x is the number of cans. So 840 - x is the number of bottles. And since each bottle's weight is 70 ounces, the total weight of the bottles in the truck is 70*(840-x) = 70*840 - 70*x = 58800 - 70x.

Now to find the total weight, we add the weight of the cans to the weight of the bottle: 14x + 58800 - 70x = 58800-56x.

So the equation to find the total weight of the truck is:

58800-56x, in which x represents the number of cans in the truck.

Hope this helps! :)

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I really really need help with this . No links

Diano4ka-milaya [45]

Answer:

pretty sure its 123

Step-by-step explanation:

3 0

3 years ago

A. A fair 6-face die will be rolled some number of times, and you win if it shows an ace (one spot) 20% or more of the time. Oth

butalik [34]

Answer: The complete question is found in the attachment

Step-by-step explanation:

Law of large numbers: The probability of occurrence of an event becomes closer to the theoretical probability as the number of trials increases

P(an ace) = 1/6

= 0.1667

= 16.67%

a) In 600 rolls, the value will be close to 16.67. compared to 60 rolls

Greater than 20% interval doesn't include 16.67%. So, for more than 20% ace, 60 rolls is better.

b) More than 15% interval includes 16.67. So, it is better to roll 600 times

c) The interval between 15% and 20% include 16.67% and hence, 600 rolls is better

d) Larger number of trials is better to get exactly 16

So, 600 rolls is better

4 0

3 years ago

A basketball player makes 70% of the free throws he shoots. Suppose that he tries 15 free throws.

Volgvan

Answer:

a.) .95

b.) The expected number of baskets is 10.50.

c.) 1.7748

Step-by-step explanation:

a.) This is a binomial distribution as there are two possibilities: makes a free throw or doesn't. This means that you can use the binomial function on a calculator to figure out the answer. Use the binomial CDF function on a calculator and the number of trials=15, probability of success=.7, lower bound=0, upper bound=7. Once you have evaluated the answer, .0500, it will need to be subtracted from1, as you want everything not included in this section. The answer to part a is thus 1-.0500=.95.

b.) The expected value is calculated by taking the total number of shots and multiplying it by the probability of making the shot: 15×.7=10.5 shots.

c.) The standard deviation of a binomial distribution can be calculated by the formula $\sqrt{(sample size)(probability)(1-probability)}$ . Plugging in the numbers you get $\sqrt{(15)(.7)(.3)}$ =1.7748.

8 0

3 years ago

I really need help guys im begging

soldier1979 [14.2K]

Havent done this in years but i think it would just be 12

3 0

3 years ago

Read 2 more answers

madeline studies honeybees. every week she weighs the same honeybee hive, the first week the hive weighs 11.607 kilograms. its w

fomenos

So, we already know that one hive has a weight of 11.607kg and .204kg is add each week, so we add on .204kg times, w, representing weeks onto 11.607kg and our t is our total of weight of a hive with respect to weeks

$w = weeks \\ t = total \: weight \: with \: respect \: to \: weeks$
So in this case our w is 7.5 weeks and now we evaluate t

$w = 7.5 \: weeks \\ t = ?$
Solve
$11.607kg + .204kg(w) = t \\ 11.607kg + .204kg(7.5) = t \\ t = 13.137kg$
Answer:

Hive's weight will increase by 1.53kg in 7.5 weeks to 13.137kg

6 0

3 years ago