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Shane
Questions (271)
What are the factors of 12?
1 answer
304 views
I need help with Maps and scale
The question is : The actual Distance between two cities is 135.km and the map scale 100 km find
1 answer
622 views
A)A lighthouse emits a beam of light that rotates (counterclockwise from a birds-eye perspective) at a constant rate with one
1 answer
762 views
Calculate the solubility of the compoud PbI2 in a 0.0333 M solution of Mg(ClO4)2 using (1) activities and (2) molar
1 answer
1,179 views
Suppose the population of a colony of ants grows at the rate:
P’(x) = 1 + 5/sqroot(t+1) If there are 250 ants after 120 hours,
1 answer
631 views
Suppose the annual revenue for a company between 2000 and 2005 is approximated by R(t)=18t^2+4t+3, where t=0 represents the year
1 answer
663 views
Ethel collects animal stickers.She has 30 cat stickers,15 horse stickers,19 dog stickers and 11 rabbit stickers. One third of
1 answer
611 views
a ferris wheel is elevated 1 meter above ground. When car reaches the highest point of the Ferris wheel, it's altitude from
5 answers
15,125 views
A ferris wheel is elevated 1 meter above ground. When car reaches the highest point of the ferris wheel it's altitude from
3 answers
1,922 views
A 5.20 g pellet is shot horizontally from a BB gun at a speed of 29.1 m/s into a 20.8 g wooden block. The wooden block is
0 answers
518 views
What are two themes in Perseus Adventures? Reading the book but really don't understand the question
1 answer
458 views
The sum of 3 consecutive odd numbers is 63. What is the smallest of these numbers
1 answer
496 views
Describe in 7 sentences the significant of each individual.
1. Aryans 2. Asoka 3. Brahmins 4. Confucius 5. Laozi 6. Shi Huangdi
1 answer
603 views
The difference between twice a number and a number that is 5 more than 3. Write an equation that could be used to find the value
3 answers
3,001 views
Identify and define the causes of mental disorders
1 answer
451 views
A rectangle has dimensions in feet as shown in the figure it is 2x +5
And one side is 8. I need to write an expression for the
2 answers
930 views
An object with initial velocity of 20 m/s accelerates uniformly at 5 m/s in the direction of its motion for a distance of 10 m.
2 answers
2,088 views
Estimate the area under the curve f(x) = x2 + 1 from x = 0 to x = 6 by using three circumscribed (over the curve) rectangles.
4 answers
1,845 views
A piece of cobalt has a mass of 41 g and is initially electrically neutral. It is then charged with q = +0.6 µC.
(a) How many
1 answer
594 views
Determine the magnitude of the force between an electric dipole with a dipole moment of 2 ✕ 10-29 C m and an electron. The
1 answer
610 views
An object in equilibrium has three forces exerted on it. A 25 N force acts at 90 from the x-axis and a 48 N force acts at 60.
1 answer
903 views
The radiator in a car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the the antifreeze suggests
1 answer
2,297 views
The radiator in a car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the the antifreeze suggests
1 answer
737 views
Two cars leave the same town and travel in opposite directions. At the end of 8 hours, the cars are 896 miles apart. Find the
2 answers
694 views
Gab and Van can mow the lawn in 40 minutes if they work together. If Gab works twice as fast as Van, how long does it take Gab
2 answers
496 views
What does this poll most suggest about U.S. citizens?
a.) they belive that higher taxes are worth the cost and benefits b.) they
3 answers
522 views
What is one certain long-term cost of adding to national debt?
a.) Americans in the future must have fewer public services b.)
3 answers
568 views
Let 70.0 J of heat be added to a particular ideal gas. As a result, its volume changes from 65.0 cm3 to 169.0 cm3 while the
1 answer
642 views
An engineer has an odd-shaped object of mass 16 kg and needs to find its rotational inertia about an axis through its center of
0 answers
663 views
A 2.40 kg mess kit sliding on a frictionless surface explodes into two 1.20 kg parts:
3.78 m/s, due north, and 5.28 m/s, 32.8°
1 answer
1,103 views
Frank teacher was teaching the class about fractions. She posted the fractions 1/7 and 3/9 on the board. Frank was supposed to
2 answers
988 views
There are two fractions that are given. The two fractions are 3/12 and 7/12.what answer so you come up with if you were to add
1 answer
445 views
I'm stumped
4ko2 + 2co2 ----2k2co3 + 3o2 What mass of k02 in grams is required to react with 8.90 l at 22.0 c and 767 mm hg?
1 answer
1,524 views
Prove the identity:
sec^4x - tan^4x = 1+2tan^2x
3 answers
2,455 views
A small quantity of hydrochloric acid and a large quantity of limestone chips (CaCO3) are reacted on a beaker, which was placed
2 answers
683 views
If EF= 10x+12, FG=14, and EG= 136, what is the value of x?
0 answers
393 views
For the electrolysis of molten potassium bromide:
(a) write the equation for the reaction at cathode. (b) write the equation for
4 answers
3,425 views
For the electrolysis of molten potassium bromide:
Write the equation for the overall reaction.
3 answers
1,352 views
In the electrolytic refining of copper, write equation for the reaction of the impure copper.
1 answer
597 views
Write the anodic reaction for the electrolysis of concentrated zinc chloride solution.
(a) Using plantium electrodes. (b) Using
3 answers
1,829 views
Please I need help.
Many,but not all, compounds are made up of positive and negative ions. Three positive ions A^+, B^2+ and C^3+
1 answer
638 views
How many moles of atoms are there in 32g of sulfur?
1 answer
464 views
Calculate the molarity of sulfuric acid if 25.00 mL of 0.095 mol L NAOH reacts with 26.45 mL of the acid.
1 answer
523 views
How many grams are there in 2.5 moles of CuSO4.5H2O?
1 answer
620 views
A 25 mL solution of nitric acid was placed in a flask and a few drops of phenolphthalein were added. Dilute sodium hydroxide was
2 answers
671 views
A parallelogram has two adjacent sides of length 4cm and 6cm reapectively. If the included angle measures 52 degrees, find the
5 answers
2,737 views
John wishes to determine the height of a flagpole. He takes a sighting of the top of the flagpole from point P. He then moves
1 answer
2,248 views
An aircraft dropped a box of emergency supplies to a group of trampers. The height of the box above the ground, h, at time, t is
1 answer
529 views
Please I need help..how can I solve this guadratic equation??
520 - 5t^2 = 0
1 answer
471 views
Solve this equation by completing squares and then check the solution..
x = 21/x-4
1 answer
455 views
a)Express y = 2 (x - 1) (x - 5) in the form y = ax^2 + bx + c.
b) From the above quadratic equation calculate the following: I) x
1 answer
542 views
An aircraft dropped a box of emergency supplies to a group of trampers. The height of the box above the ground, h, at time, t,
1 answer
519 views
Write without negative indices: a^-3b/c^-1
1 answer
666 views
Write 1/2^1-n in non- fractional form.
2 answers
1,171 views
Write as powers of 2.
(a) 16 (b) 2^m/8
1 answer
383 views
Find the coordinates of the points of intersection of the straight line y = 3x - 6 with the parabola y = x^2 - 6x + 8 and solve
1 answer
661 views
Given the quadratic equation y = -x^2 + 2x + 3.
a) Will the graph turn upwards or downwards? b) What are the coordinates of x and
1 answer
727 views
2/ x^2 - 9xy^2 - 3/3x + 12y
1 answer
522 views
Simplify; x^2 - x - 6/ 6xy divide x^2 - 9/2x^2y
1 answer
457 views
Simplify; (x - y)^3 divide x^2z - 2xyz + y^2z
1 answer
411 views
Simplify 5x/7 × 15y/8x
1 answer
455 views
Simplify; p^2 - p - 42
1 answer
385 views
Solve this equation; p^2 - p - 42
1 answer
373 views
Solve this equation; p^2 - p - 42
1 answer
350 views
Simplify; x^2 + ax + bx + ab divide x^2 + 2ax + a^2.
1 answer
435 views
Simplify this expression;
X^2 + ax + bx + ab/x^2 + 2ax + a^2
1 answer
417 views
Simplify 5x/7 × 15y/8x
1 answer
396 views
Solve this equation. 2/5 (x^2 + 1) = x
1 answer
795 views
Find the coordinates of the points of intersection of the straight line y = 3x - 6 with the parabola y = x^2 - 6x + 8.
a)
1 answer
505 views
Given the quadratic equation y = -x^2 + 2x + 3.
a) Will the graph turn upwards or downwards? b)What are the coordinates of x and
1 answer
842 views
How do you factor 2a^2+5x+3
1 answer
401 views
Write the equations below in the form y = mx + c.
State how many solutions each systems of linear equation have. 3x = 6y 2y - 6x
1 answer
479 views
What is the equation of the line which has gradient 2, and passes through midpoint of (3,4) and (5,6)
1 answer
509 views
What is the value of p if the line (3p + 1)x - 2y = 6p is perpendicular to the line 2x - y + 1 = 0
1 answer
336 views
Solve 2y - 5x = 3 and x + y = 5 using substitution.
1 answer
449 views
Show by calculations weather the following lines are parallel or not.. y + 5x = 1 and 0.2 = y - 5.
1 answer
428 views
Construct the table of values for the following equation 1 - 3x = 2y for -4<x <4. Use the answer to sketch the graph.
1 answer
717 views
If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will
2 answers
758 views
One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 7 days. How long will it take two pumps,
1 answer
498 views
When the function f(x) is equal to 2xn + ax2 - 6 is divided by (x-1), the reminder is -7 and when divided by (x+3), the reminder
1 answer
428 views
Calculate the arc length that subtends an angle of 55 degree at the centre of a circle with radius r = 5cm.
3 answers
2,125 views
The relationship between the vertical height and the horizontal distance of a ball thrown at 45 degree is given by the equation
1 answer
1,051 views
The length of a rectangle is 10cm greater than its width. The perimeter of the rectangle is 1m. Find the simplest expression for
1 answer
558 views
Find dy/dx if y = 1/8.
1 answer
339 views
Does the parabola y = -3x^2 + 2x - 1 have a maximum or minimum value?
1 answer
1,056 views
Find the line that is perpendicular to y = -3/4 x + 2 and passes through (3,4).
1 answer
965 views
Sine and Cosine rule are both used in solving trigonometry problems.Give an example of when the cosine rule is more appliciable
1 answer
1,226 views
Find the two stationary points on the curve when y = 2x/x^2 + 1
1 answer
1,696 views
A circle x^2 + y^ + 2x - 2y -1 = 0 expressed in the following form (x-h)^2 + (y-k)^2 = r^2 where h, k are the coordinates of the
1 answer
465 views
A circle x^2 + y^ + 2x - 2y -1 = 0 expressed in the following form (x-h)^2 + (y-k)^2 = r^2 where h, k are the coordinates of the
1 answer
430 views
0.2 Faradays of electricity were passed through solutions of sulphuric acid. Calculate the volume of hydrogen evolved at s.t.p
1 answer
595 views
What would be the product formed for electrolysis of copper sulphate between the electrodes (a) Platinum (b) Copper and NaCl
0 answers
496 views
Find the wind velocity if course 060 degree, airspeed 250km/h; track 040 degree, ground speed 260km/h.
0 answers
332 views
Find the course and ground speed if Track 150 degree, airspeed 400km/h; wind 040degree, 30km/h.
1 answer
309 views
Find the indicated term for (1-2x)^10, middle term.
2 answers
460 views
Find the ratio of the coefficients of the 4th and 6th terms in the expansion of (1 + 2x)^16
1 answer
558 views
This balance equation shows the burning of octane in air. 2C8H18 + 25O2 ----> 16CO2 + 18H2O. How many grams of carbondioxide
1 answer
867 views
Find the expansions of (1-x)^6 and (1+2x)^6 as far as the terms in x^3. Hence expand (1+x-2x^2)^6 up to the terms in x^3.
1 answer
370 views
The coefficient of x^2 is 69 in the expansion of (1-ax)^24, where a>0. Find the coefficient of x^3.
2 answers
2,711 views
Expand (1-x)^4. Hence find S if S = (1-x^3)^4 - 4(1-x^3)^3 + 6 (1-x^3)^2 - 4(1-x^3) + 1.
1 answer
582 views
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