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2 years ago

If a car car travels 190 km at 10 hours find how much speed will be travelled in one hour?

Mathematics

1 answer:

Fed [463]2 years ago

5 0

Answer:

19km

Step-by-step explanation:

190km divided by 10hr = 19km per 1hr

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2 years ago

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in a history class, the girl to boy ratio is 9 to 5. if there is a total of 70 students how many boys is there

DedPeter [7]

Answer:

25 boys.

Step-by-step explanation:

To solve this problem, first add the two parts of the ratio. 9 + 5 = 14. Then divide 70 by 14 to get 5. Since the total is 5 times the ratio total, multiply both sides of the ratio by 5. The result is 45 : 25. If you add them together, you get a total of 70. Therefore, there are 25 boys in the class.

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3 years ago

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Which statement about the simplified binomial expansion of (a + b)", where n is a positive integer, is true?

Alja [10]

Answer:

$(a+b)^n ={n \choose 0}a^{(n)}b^{(0)} + {n \choose 1}a^{(n-1)}b^{(1)} + {n \choose 2}a^{(n-2)}b^{(2)} + ..... +{n \choose n}a^{(0)}b^{(n)}$

Step-by-step explanation:

The Given question is INCOMPLETE as the statements are not provided.

Now, let us try and solve the given expression here:

The given expression is: $(a +b)^n, n > 0$

Now, the BINOMIAL EXPANSION is the expansion which describes the algebraic expansion of powers of a binomial.

Here, $(a+b)^n = \sum_{k=0}^{n}{n \choose k}a^{(n-k)}b^{(k)}$

or, on simplification, the terms of the expansion are:

$(a+b)^n ={n \choose 0}a^{(n)}b^{(0)} + {n \choose 1}a^{(n-1)}b^{(1)} + {n \choose 2}a^{(n-2)}b^{(2)} + ..... +{n \choose n}a^{(0)}b^{(n)}$

The above statement holds for each n > 0

Hence, the complete expansion for the given expression is given as above.

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2 years ago

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Karl had planned to drive for 1023 hours on a certain day during his road trip. When he became sleepy, however, he decided to de

netineya [11]

Since Karl became sleepy and decided to decrease his driving time by 25%, he drove <u>767.25 hours</u> that day.

<h3>What is driving time?</h3>

Planned driving time is the estimated time that Karl planned to drive between two points or to one's destination.

The Actual driving time is the actual time that it took Karl to drive from one point to his destination.

Driving time can be estimated or calculated by dividing the distance by the speed.

<h3>Data and Calculations:</h3>

The planned driving hours on a certain day = 1,023 hours

Decrease in driving time = 25%

Percentage of hours Karl drove = 75% (100 - 25)

Hours drove that day = 767.25 hours (1,023 x 75%)

Thus, Karl drove <u>767.25 hours</u> that day.

Learn more about driving time at brainly.com/question/4931057

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1 year ago

Find the product of −2 1/4 and 2 1/2. enter answer as a mixed number in simplest form.

const2013 [10]

Umm kid u forgot to put in like -, +, or x, or at least /
but here are the answers, if its addition the answer is 1/4, if its subtraction answer is -19/4 but if u simplify it to mixed fraction answer would be -4 3/4, if its multiplication answer would be -45/8 but simplify that and it would be -5 5/8, if its division answer would be -9/10 hope this helps

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2 years ago

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If a car car travels 190 km at 10 hours find how much speed will be travelled in one hour?​

If a car car travels 190 km at 10 hours find how much speed will be travelled in one hour?