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3 years ago

12

There are 7 books on the floor. The number of books on the shelf is 2 more than 3 times a number of books on the floor. How many

books are on the shelf

1 answer:

Radda [10]3 years ago

8 0

If there are 7 books on the floor, 7 x 3 is 21. Plus two extra books, 21 + 2 = 23. There are 23 books on the bookshelf.

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In a New York coupon experiment, the experiment was conducted to test the effects of the face value of coupons on the likelihood

steposvetlana [31]

Answer:

The correct approach will be "the likelihood of cashing the coupon".

Step-by-step explanation:

That what's being examined as well as calculated throughout the experiment or observational study seems to be the dependent variable (almost always widely recognized as that of the responding variable). As a consequence of the modifications to something like the independent variable, that's what modifications.
Whether large you are really at various ages would be an illustration of some kind of dependent variable.

5 0

3 years ago

Given that sin(30)=1/2 and cos(30)=(sqrt3)/2, use trigonometric identities to find the value of cot(30)

Anit [1.1K]

<u>Your question: </u>given that sin(30)=1/2 and cos(30)=(sqrt3)/2, use trigonometric identities to find the value of cot(30)

The correct answer would be D $\sqrt{3}$

5 0

3 years ago

Please Show Your Work

Morgarella [4.7K]

The area of the trapezoid will be 32.5 square feet. Then the volume of the geometry will be 341.25 cubic feet.

<h3>What is Geometry?</h3>

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

The figure is shown.

Then the volume of the given geometry will be

Volume = Area of the trapezoid × Height

Then the area of the trapezoid will be

$\rm Trapezoid \ area = \dfrac{1}{2} \times (8 + 5) \times 5\\\\\\Trapezoid \ area = 32.5 \ ft^2$

Then the volume of the geometry will be

Volume = 32.5 × 10.5

Volume = 341.25 cubic ft.

More about the geometry link is given below.

brainly.com/question/7558603

#SPJ1

7 0

2 years ago

A rectangle has an area of 36 square units explain whether the length of the rectangle is inversely proportional to its width. I

Vlad1618 [11]

Answer:

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6 0

2 years ago

A hemispherical tank is filled with water and has a diameter of 4 feet. If water weighs 62.4 pounds per cubic foot, what is the

yulyashka [42]

The total weight of the water in a full tank, to the nearest pound is 1056 pounds, if water filled with water in the 4 diameter hemispherical tank and weighs 62.4 pounds per cubic foot.

Step-by-step explanation:

The given is,

A hemispherical tank is filled with water and has a diameter of 4 feet.

Water weighs 62.4 pounds per cubic foot

Step:1

Formula to weight of water is,

= Volume of water tank × weight of water per foot......(1)

Step:2

Formula to find volume of the tank is,

$V = \frac{2}{3} \pi r^{3}$ ...................................(2)

From given, r = Radius of Hemisphere

$r = \frac{d}{2}$

$= \frac{4}{2}$

r = 2 foot

From equation (2),

= $\frac{2}{3}$ × $\pi$ × $2^{3}$

= 16.755 cubic foot

Step:3

From equation (1),

= 16.775 × 62.4 (∵ Water weighs 62.4 pounds per cubic foot )

= 1045.52 pounds ( ∵ $foot^{3}$ × $\frac{pounds}{foot^{3}}$ = $pounds$ )

≅ 1046 pounds

Weight of water in tank = 1046 pounds

Result:

The total weight of the water in a full tank, to the nearest pound is 1056 pounds, if a hemispherical tank is filled with water and it has 4 feet diameter and water weighs 62.4 pounds per cubic foot.

7 0

2 years ago