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Shane
Questions and answers by
Shane
, page 3
Questions (271)
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
434 views
How do you factor 2a^2+5x+3
1 answer
358 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
2 answers
775 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
449 views
Solve this equation. 2/5 (x^2 + 1) = x
2 answers
763 views
Simplify 5x/7 × 15y/8x
1 answer
355 views
Simplify this expression;
X^2 + ax + bx + ab/x^2 + 2ax + a^2
1 answer
376 views
Simplify; x^2 + ax + bx + ab divide x^2 + 2ax + a^2.
1 answer
395 views
Solve this equation; p^2 - p - 42
1 answer
322 views
Solve this equation; p^2 - p - 42
1 answer
334 views
Simplify; p^2 - p - 42
1 answer
347 views
Simplify 5x/7 × 15y/8x
1 answer
421 views
Simplify; (x - y)^3 divide x^2z - 2xyz + y^2z
1 answer
368 views
Simplify; x^2 - x - 6/ 6xy divide x^2 - 9/2x^2y
1 answer
412 views
2/ x^2 - 9xy^2 - 3/3x + 12y
1 answer
475 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
2 answers
668 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
2 answers
605 views
Write as powers of 2.
(a) 16 (b) 2^m/8
1 answer
349 views
Write 1/2^1-n in non- fractional form.
4 answers
1,106 views
Write without negative indices: a^-3b/c^-1
2 answers
617 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
467 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
2 answers
484 views
Solve this equation by completing squares and then check the solution..
x = 21/x-4
1 answer
397 views
Please I need help..how can I solve this guadratic equation??
520 - 5t^2 = 0
1 answer
422 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
480 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
4 answers
2,157 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
3 answers
581 views
How many grams are there in 2.5 moles of CuSO4.5H2O?
2 answers
572 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
470 views
How many moles of atoms are there in 32g of sulfur?
1 answer
412 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+
2 answers
573 views
Write the anodic reaction for the electrolysis of concentrated zinc chloride solution.
(a) Using plantium electrodes. (b) Using
4 answers
1,749 views
In the electrolytic refining of copper, write equation for the reaction of the impure copper.
2 answers
541 views
For the electrolysis of molten potassium bromide:
Write the equation for the overall reaction.
4 answers
1,276 views
For the electrolysis of molten potassium bromide:
(a) write the equation for the reaction at cathode. (b) write the equation for
5 answers
3,336 views
If EF= 10x+12, FG=14, and EG= 136, what is the value of x?
1 answer
354 views
A small quantity of hydrochloric acid and a large quantity of limestone chips (CaCO3) are reacted on a beaker, which was placed
3 answers
627 views
Prove the identity:
sec^4x - tan^4x = 1+2tan^2x
4 answers
2,400 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?
3 answers
1,450 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
407 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
3 answers
928 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°
2 answers
1,048 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
1 answer
624 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
3 answers
557 views
What is one certain long-term cost of adding to national debt?
a.) Americans in the future must have fewer public services b.)
4 answers
511 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
4 answers
471 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
3 answers
426 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
3 answers
623 views
The radiator in a car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the the antifreeze suggests
2 answers
658 views
The radiator in a car is filled with a solution of 60% antifreeze and 40% water. The manufacturer of the the antifreeze suggests
3 answers
2,189 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.
2 answers
844 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
2 answers
544 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
2 answers
523 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.
5 answers
1,761 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.
4 answers
2,018 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
3 answers
850 views
Identify and define the causes of mental disorders
1 answer
411 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
4 answers
2,925 views
Describe in 7 sentences the significant of each individual.
1. Aryans 2. Asoka 3. Brahmins 4. Confucius 5. Laozi 6. Shi Huangdi
2 answers
539 views
The sum of 3 consecutive odd numbers is 63. What is the smallest of these numbers
1 answer
458 views
What are two themes in Perseus Adventures? Reading the book but really don't understand the question
1 answer
399 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
1 answer
466 views
A ferris wheel is elevated 1 meter above ground. When car reaches the highest point of the ferris wheel it's altitude from
4 answers
1,835 views
a ferris wheel is elevated 1 meter above ground. When car reaches the highest point of the Ferris wheel, it's altitude from
7 answers
15,054 views
Ethel collects animal stickers.She has 30 cat stickers,15 horse stickers,19 dog stickers and 11 rabbit stickers. One third of
2 answers
556 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
2 answers
501 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,
2 answers
563 views
Calculate the solubility of the compoud PbI2 in a 0.0333 M solution of Mg(ClO4)2 using (1) activities and (2) molar
2 answers
1,127 views
A)A lighthouse emits a beam of light that rotates (counterclockwise from a birds-eye perspective) at a constant rate with one
3 answers
690 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
3 answers
566 views
What are the factors of 12?
1 answer
258 views
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