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Amiraneli [1.4K]
4 years ago
7

Karla bought 2 pounds of red beads , 1 3/4 pounds of green beads , and 10 ounces of string at the craft store. How much do Karla

's supplies weigh in all.
Mathematics
2 answers:
liberstina [14]4 years ago
7 0

Answer:

Karla's supplies weigh in all 4.375 pounds or 70 ounces.

Step-by-step explanation:

Karla bought red beads = 2 pounds

green beads = 1\frac{3}{4} pounds or 1.75 pounds

String = 10 ounces or 0.625 pound

1 pound = 16 ounces

First we convert each product's weight in pounds

red beads = 2 pounds

green beads = 1\frac{3}{4} or 1.75 pounds

string = 10 ounces 10 ÷ 16 = 0.625 pounds

Total = 2 + 1.75 + 0.625 = 4.375 pounds

4.375 × 16 = 70 ounces

Karla's supplies weigh in all 4.375 pounds or 70 ounces.

elixir [45]4 years ago
4 0
12 ounces are in 3/4 a pound.. and 16 ounces are in a pound.. so adding 16 and 10 gives you 26, which ends up with Karla's supplies weighing 4 pounds and 10 ounces all together.
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To answer this problem, we use the binomial distribution formula for probability:

P (x) = [n! / (n-x)! x!] p^x q^(n-x)

Where,

n = the total number of test questions = 10

<span>x = the total number of test questions to pass =   >6</span>

p = probability of success = 0.5

q = probability of failure = 0.5

Given the formula, let us calculate for the probabilities that the student will get at least 6 correct questions by guessing.

P (6) = [10! / (4)! 6!] (0.5)^6 0.5^(4) = 0.205078

P (7) = [10! / (3)! 7!] (0.5)^7 0.5^(3) = 0.117188

P (8) = [10! / (2)! 8!] (0.5)^8 0.5^(2) = 0.043945

P (9) = [10! / (1)! 9!] (0.5)^9 0.5^(1) = 0.009766

P (10) = [10! / (0)! 10!] (0.5)^10 0.5^(0) = 0.000977

Total Probability = 0.376953 = 0.38 = 38%

<span>There is a 38% chance the student will pass.</span>

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3 years ago
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4 years ago
Kim finds a 1-meter tree branch and marks it off in thirds and fifths. She then breaks the branch along all the markings and rem
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Answer:

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Step-by-step explanation:

We want to find the fraction of the original branch that remains, so we will assume a length of the branch in order to make our calculation easier.

Since Kim marks it off in thirds and fifths, let's find the least common multiple of 3 & 5.

Least common multiple of 3 & 5 is 15.

Thus,let's make the length of the branch to be 15-meter long.

Now, if the branch is 15 m long, considering the markings of thirds and fifths, the branch would be cut at:

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We are told that She then breaks the branch along all the markings and removes one piece of every distinct length. Thus;

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3 years ago
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Answer:

The answer is 108 cm²

Step-by-step explanation:

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4 years ago
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