All Questions ⁺⁰237722 Questions

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help

The length of the earth’s equator is approximately 40000 km. What is the approximate length of the 60 degree parallel?

Guest May 13, 2020

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435

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help

What is the angle formed by the line (1,2,0) + t(-1,2,1) and a normal vector of the plane x+y-z = 4? Give your answer in degrees.

Guest May 13, 2020

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392

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help

The intersection of the planes 8x + y - 12z = 35 and 6x + 7y - 9z = 70 is a line. Find the point where this line intersects the xy-plane.

Guest May 13, 2020

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892

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+16

How many of the first 2019 positive integers have no odd single-digit prime factors?

How many of the first 2019 positive integers have no odd single-digit prime factors?

hiiiiguest May 13, 2020

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568

1

+16

help urgent

How many of the first 2019 positive integers have no odd single-digit prime factors?

hiiiiguest May 13, 2020

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560

1

+16

help it's urgent

David throws a dart at a triangular dartboard whose side lengths are 5 ,5 and 6 and the dart lands in a random location on the dartboard. What is the probability that the sum of the squares of the 3 distances from the dart's location to the corners read more ..

hiiiiguest May 13, 2020

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433

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????

How do i put |_frac_{{d};{dt}}|_matrix1x3_{{x};{y};{z}}=|_matrix1x3_{{10({y-x})};{28x-y-xz};{-|_frac_{{8};{3}}z+xy}}, |_matrix1x3_{{x};{y};{z}}=|_matrix1x3_{{-10};{10};{25}}, t=0…30 into a 3d graph

Guest May 13, 2020

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387

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-7y-343

Guest May 13, 2020

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477

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i need help plz

A bookstore is deciding what price it should charge for a certain book. After research, the store finds that if the book's price is dollars (where ), then the number of books sold per month is . What price should the store charge to maximize its revenue? read more ..

Guest May 13, 2020

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519

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+9

HELP

A parked ambulance is 100 m away from a girl and 900 m away from a boy :
A) the girl will hear a higher pitch than the boy
B) the boy will hear a higher pitch than the girl
C) both hear the same pitch read more ..

ssaayyaa May 13, 2020

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4544

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math help

A roof has a cross section that is a right triangle. The diagram shows the approximate dimensions of this cross section. Find the height h of the roof. Round your answer to the nearest tenth.

read more ..

Guest May 13, 2020

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613

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help urgent

A circle is tangent to the positive x-axis at x=3. It passes through the distinct points (6,6) and (p,p) What is the value of (p)? Express your answer as a common fraction.

Guest May 13, 2020

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392

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help please with this math question

Please help, I need to find this question out but I can not understand it.
A recent survey of 128 high school students indicated the following information about release times from
school.
-35 percent wanted to start school and hour earlier and read more ..

Guest May 13, 2020

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599

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help please

David throws a dart at a triangular dartboard whose side lengths are 5 ,5 and 6 and the dart lands in a random location on the dartboard. What is the probability that the sum of the squares of the 3 distances from the dart's location to the corners read more ..

Guest May 13, 2020

0

589

1

+16

helpp

How many of the first 2019 positive integers have no odd single-digit prime factors?

hiiiiguest May 13, 2020

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506

1

need help

You walk one mile to school every day. You leave home at the same time each day, walk at a steady speed of 3 miles per hour, and arrive just as school begins. Today you were distracted by the pleasant weather and walked the first half mile at a speed of read more ..

Guest May 13, 2020

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574

2

help

Let ABCDEF be a regular hexagon. Let P be the midpoint of BC, and let Q be the midpoint of EF. Find the ratio of the area of APDQ to the area of ABCDEF.

Guest May 13, 2020

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504

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+174

Help Fast

, Turn this into base 3. I've read https://web2.0calc.com/questions/help-thanks_8 already, but I don't understand why you need to keep multiplying
Can someone please explain, thanks!

Forumofweb2.0cal May 13, 2020

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433

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Help-Tough problem!

A businessman started a retirement plan at the age of 30. He contributed to it annually in equal amounts with an APR of 5% for 25 years. Due to some personal issues, he was unable to contibute to his plan for 5 years. Then he resumed the same payments as read more ..

Guest May 13, 2020

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1614

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math help

The terminal ray of angle θ drawn in standard position passes through (1,−3) .
What is the value of cscθ ?
Enter your answer in the box. Enter your answer in simplest form.

Guest May 13, 2020

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740

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+52

Riddle.

United we are an army of wet and cold
Never truly together, yet never truly alone
What are we?
Hint: This one has two answers but both are similar. read more ..

off-topic

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Question May 13, 2020

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