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Shane
Questions (271)
What are the factors of 12?
1 answer
334 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
670 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
810 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
1,213 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
668 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
689 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
647 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
15,172 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
1,971 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
559 views
What are two themes in Perseus Adventures? Reading the book but really don't understand the question
1 answer
486 views
The sum of 3 consecutive odd numbers is 63. What is the smallest of these numbers
1 answer
533 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
630 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
3,040 views
Identify and define the causes of mental disorders
1 answer
491 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
980 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
2,126 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
1,881 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
635 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
654 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
950 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
2,344 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
797 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
746 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
530 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
554 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
612 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
691 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
690 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
1,141 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
1,028 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
470 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
1,562 views
Prove the identity:
sec^4x - tan^4x = 1+2tan^2x
3 answers
2,486 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
713 views
If EF= 10x+12, FG=14, and EG= 136, what is the value of x?
0 answers
418 views
For the electrolysis of molten potassium bromide:
(a) write the equation for the reaction at cathode. (b) write the equation for
4 answers
3,475 views
For the electrolysis of molten potassium bromide:
Write the equation for the overall reaction.
3 answers
1,392 views
In the electrolytic refining of copper, write equation for the reaction of the impure copper.
1 answer
637 views
Write the anodic reaction for the electrolysis of concentrated zinc chloride solution.
(a) Using plantium electrodes. (b) Using
3 answers
1,879 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
680 views
How many moles of atoms are there in 32g of sulfur?
1 answer
504 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
560 views
How many grams are there in 2.5 moles of CuSO4.5H2O?
1 answer
655 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
720 views
A parallelogram has two adjacent sides of length 4cm and 6cm reapectively. If the included angle measures 52 degrees, find the
5 answers
2,795 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
2,279 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
568 views
Please I need help..how can I solve this guadratic equation??
520 - 5t^2 = 0
1 answer
498 views
Solve this equation by completing squares and then check the solution..
x = 21/x-4
1 answer
498 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
576 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
548 views
Write without negative indices: a^-3b/c^-1
1 answer
692 views
Write 1/2^1-n in non- fractional form.
2 answers
1,210 views
Write as powers of 2.
(a) 16 (b) 2^m/8
1 answer
411 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
701 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
763 views
2/ x^2 - 9xy^2 - 3/3x + 12y
1 answer
544 views
Simplify; x^2 - x - 6/ 6xy divide x^2 - 9/2x^2y
1 answer
485 views
Simplify; (x - y)^3 divide x^2z - 2xyz + y^2z
1 answer
441 views
Simplify 5x/7 × 15y/8x
1 answer
480 views
Simplify; p^2 - p - 42
1 answer
413 views
Solve this equation; p^2 - p - 42
1 answer
404 views
Solve this equation; p^2 - p - 42
1 answer
381 views
Simplify; x^2 + ax + bx + ab divide x^2 + 2ax + a^2.
1 answer
469 views
Simplify this expression;
X^2 + ax + bx + ab/x^2 + 2ax + a^2
1 answer
439 views
Simplify 5x/7 × 15y/8x
1 answer
419 views
Solve this equation. 2/5 (x^2 + 1) = x
1 answer
823 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
545 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
873 views
How do you factor 2a^2+5x+3
1 answer
436 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
514 views
What is the equation of the line which has gradient 2, and passes through midpoint of (3,4) and (5,6)
1 answer
552 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
359 views
Solve 2y - 5x = 3 and x + y = 5 using substitution.
1 answer
480 views
Show by calculations weather the following lines are parallel or not.. y + 5x = 1 and 0.2 = y - 5.
1 answer
456 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
764 views
If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will
2 answers
789 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
548 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
465 views
Calculate the arc length that subtends an angle of 55 degree at the centre of a circle with radius r = 5cm.
3 answers
2,162 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
1,084 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
604 views
Find dy/dx if y = 1/8.
1 answer
374 views
Does the parabola y = -3x^2 + 2x - 1 have a maximum or minimum value?
1 answer
1,084 views
Find the line that is perpendicular to y = -3/4 x + 2 and passes through (3,4).
1 answer
996 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
1,262 views
Find the two stationary points on the curve when y = 2x/x^2 + 1
1 answer
1,727 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
501 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
458 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
632 views
What would be the product formed for electrolysis of copper sulphate between the electrodes (a) Platinum (b) Copper and NaCl
0 answers
528 views
Find the wind velocity if course 060 degree, airspeed 250km/h; track 040 degree, ground speed 260km/h.
0 answers
365 views
Find the course and ground speed if Track 150 degree, airspeed 400km/h; wind 040degree, 30km/h.
1 answer
342 views
Find the indicated term for (1-2x)^10, middle term.
2 answers
503 views
Find the ratio of the coefficients of the 4th and 6th terms in the expansion of (1 + 2x)^16
1 answer
607 views
This balance equation shows the burning of octane in air. 2C8H18 + 25O2 ----> 16CO2 + 18H2O. How many grams of carbondioxide
1 answer
907 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
406 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
2,752 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
610 views
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