02/20/20

The perimeter of a rectangle lot is 260 meters. The length exceeds the width by 20 meters . Find the dimensions of the lot.
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02/19/20

Triangle QRS is equilateral. QR=4x,RS=2x+1 and SQ÷6x-1. Find x and the measures of each side.

It's for geometry and I really need to know what this is cause it's really important. So can I plz get the right answer.
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02/19/20

Help with volume please!
The base of a solid in the region bounded by the parabola x2 + y = 4 and the line x + y = 2. Cross sections of the solid perpendicular to the x-axis are semicircles. What is the volume, in cubic... more
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02/18/20

A student leaves physics class and walks 3 meters south to a water fountain. Then walks 6 meters north to math class. What's the magnitude and direction of her total displacement between classes?
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02/18/20

A car accelerates at 5 m/s^2 at an angle of 45 degrees north of east. What is the car's acceleration due north?
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02/16/20

Algebra homework

Which of the following does NOT represent a linear relationship?A. y=2x+7B. y=2x-6/5C. 3y-4x+5=0D. y=5/2x-6
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11/21/19

The soil in Chernobyl
In soil near Chernobyl, Cesium-137 in decomposing slower that it does under laboratory conditions. Find the ecological half-life of Cesium-137 if the soil in the areas affected by the accident in... more
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11/21/19

2 Trigonometry Problems that I cannot solve
Hi, I have two trigonometry problems that I can't figure out, and I would be very grateful for help. 1.) Determine the horizontal and vertical components of the vector v with magnitude ||v|| = 4... more
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11/04/19

an airplane descends at 6degrees from the horizontal, from a height of 34000 ft. if the descent is in a straight line at 450mph, how long does it take ? (nearest minute)
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10/29/19

Which heights to use when in the equation
When a 0.40-kg block is suspended on a vertical spring, it causes it to stretch 3.00 cm. If the block is now pulled 7.80 cm below its equilibrium position and released, what is the speed of the... more
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06/30/19

Light is gathered from a distant star and one of teh spectral lines is observed at 520nm when it should be 400nm. The velocity of this star is ______km/s
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06/17/19

growth question
 A population of 20 deer are introduced into a wildlife sanctuary. It is estimated that the sanctuary can sustain up to 400 deer. Absent constraints, the population would grow by 80% per year.how... more
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03/16/19

Why is the Moon considered the major cause of tides, even though it is weaker than the Sun?
You have likely read in books that tides are mainly caused by the Moon. When the Moon is high in the sky, it *pulls* the water on the Earth upward and a high-tide happens. There is some similar... more
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03/16/19

Find all angles θ between 0° and 180° satisfying the given equation sin theta = 1/4

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03/16/19

A savings account offers 2% interest, compounded monthly. If you deposit "P" dollars into the account, what is the equation that calculates the amount A in the account after "t" years?
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03/16/19

A 50-meter line is used to tether a helium-filled balloon. Because of a breeze, the line makes an angle of approximately 55° with the ground. What is the height of the balloon?
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03/16/19

How do I convert XLSX to XLS?
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03/16/19

how many hydrogen atoms are present in 0.15 mole of H2S
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03/15/19

A 4.4-L sample has a pressure of 4.6 atm.What is the final volume, in liters, of this gas given to a patient at a pressure of 1.3 atm with no change in temperature and amount of gas?
Cyclopropane, C3H6, is a general anesthetic. A 4.4-L sample has a pressure of 4.6 atm. what is the final volume, in liters, of this gas given to a patient at a pressure of 1.3 atm with no change in... more
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03/15/19

Michael plays basketball and makes 3 more free throws than twice what Eli makes. Together they make 15 free throws. How many does Eli make?
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03/15/19

A spring has natural length 20 cm.
If a 25-N force is required to keep it stretched to a length of 30 cm (determining k, the spring constant), how much work is required to stretch it from 20 cm to 25 cm?
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