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3 years ago

A model airplane flew a distance of 330 ft in 15 seconds.

1 answer:

8 0

Okay. So we will solve this by seeing how many feet is in one second. The model airplane flies 22 feet in one second. I can tell you that the model airplane does fly 1,320 ft per minute, because 22 * 60 equals 1,320, not 1,056 ft per minute. It travels 15 miles an hour, because there are 5,280 ft in one mile. When you multiply 1,320 by 60, you get 79,200 ft. Divide that number by 5,280 and you get 15 miles, not 12 miles per hour. All of the unit rates equivalent to the speed are 15 miles an hour and 1,320 ft per minute.

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b) 7 of these cuboids of side 3 cm are put together to make this shape. Find the surface area of this shape. (3) Total marks: 5

valentina_108 [34]

Answer: 504 cm^2

The surface area of the shape is:

3 3 * 3=9

9 * 7=63

63+9=72 * 7

=504cm^2

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2 years ago

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olga_2 [115]

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2 years ago

X^3+3x^2y+3xy^2+y^3 ———————————— X^3+y^3

Hoochie [10]

To factor this fraction, you have be be aware of two special factoring formula:
a^3 + b^3 = (a + b)(a^2 – ab + b^2)

(a+b)³ = a³ + 3a²b + 3ab² + b³

You can see the top part in this case is (x+y)^3, and the bottom (denominator) can be factor into (x+y)(x^2-xy+y^2)
we can cancel (x+y), so what we have left is (x+y)^2/(x^2-xy+y^2)
or (x^2+2xy+y^2)/(x^2-xy+y^2)

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3 years ago

4. In a women's professional tennis tournament, the money a player wins depends on her finishing place in the

Stels [109]

Using geometric sequence concepts, it is found that:

a) The rule is: $P_n = 750000(0.5)^{n-1}$ .

b) An exponential relationship exists between the two variables.

<h3>What is a geometric sequence?</h3>

A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.

The nth term of a geometric sequence is given by:

$a_n = a_1q^{n-1}$

In which $a_1$ is the first term.

A geometric sequence represents an exponential relationship between the variables.

In this problem, considering that the first-place finisher wins half of $1.500.000 in total prize money, and each finisher earns half of the one who finished above, the first term and the common ratio are given by:

$a_1 = 750000, q = 0.5$ .

Hence the nth term of the sequence is given by:

$P_n = 750000(0.5)^{n-1}$

More can be learned about geometric sequence concepts at brainly.com/question/11847927

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1 year ago

Mr. Jones took a survey of college students and found that 60 out of 65 students are liberal arts majors. If a college has 8,943

Anit [1.1K]

Should be 5812.95 Students

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3 years ago