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2 years ago

If 3 bananas cost of 50 cents, how many bananas can be bought for 20 dollars?

Mathematics

1 answer:

GuDViN [60]2 years ago

6 0

Answer:

120 bananas

Step-by-step explanation:

$20 = 2000 cents

Create a proportion:

Cross multiply, then divide: 3 × 2000 = 6000, 6000 ÷ 50 = 120

So, you can buy 120 bananas for $20

hope this helps

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The legs of an isosceles trapezoid have lengths of 48 - 7x and x + 8. What is the length of one of the legs?

sdas [7]

Answer:

13 units

Step-by-step explanation:

The legs of an isosceles trapezoid are congruent, then

x + 8 = 48 - 7x ( add 7x to both sides )

8x + 8 = 48 ( subtract 8 from both sides )

8x = 40 ( divide both sides by 8 )

x = 5

Then

leg = x + 8 = 5 + 8 = 13

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3 years ago

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ludmilkaskok [199]

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2min per lap

Step-by-step explanation:

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2 years ago

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In a computer instant messaging survey, respondents were asked to choose the most fun way to flirt, and it found that P(D) =0

ikadub [295]

Answer:

P(Dᶜ )=0.41

Step-by-step explanation:

In the survey, the event D is the event of people who prefer to flirt directly in person.

Given that P(D)=0.590.

If someone is selected randomly, the probability that the individual prefers to flirt directly in person is 0.590.

If the person does not like to flirt in person, the probability of it will be the complement of event D.

From Probability Theory,

P(D)+P(Dᶜ )=1

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The probability that the selected person does not like to flirt in person is 0.41.

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3 years ago

A recipe calls for 2 teaspoons of orange juice. A can of orange juice is 22 fluid ounces. How many teaspoons of juice are in a c

Dmitrij [34]

Answer:

132 teaspoons in a 22 ounce can

Step-by-step explanation:

There are 6 teaspoons in 1 ounce

22 * 6 = 132

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2 years ago

The NCAA is interested in estimating the difference in mean number of daily training hours for men and women athletes on college

hammer [34]

Answer:

$s^2_p = \frac{9*0.3^2 +9*0.4^2}{10+10-2}=0.125$

$s_p =\sqrt{0.125}=0.354$

$(2.7 -2.4) - 2.1*0.354\sqrt{\frac{1}{10}+\frac{1}{10}}=-0.032$

$(2.7 -2.4)+ 2.1*0.354\sqrt{\frac{1}{10}+\frac{1}{10}}=0.632$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Data given

$\bar X_M = 2.7$ represent the sample mean for men