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sean
Questions and answers by
sean
Questions (168)
a ball is thrown at 15m/s at an angle of 30 degrees to the horizontal , how far does it travel horizontally before making
3 answers
1,449 views
Hi!
i need some help with this ASAP! a body is projected upwards from a point on level ground with a velocity of 45 m/s at an
1 answer
480 views
A ball of mass .44 kg and speed of 4.5 m/s collides head-on with a .22 kg ball at rest. Assuming perfect elasticity, what is the
2 answers
1,216 views
the vertices of triangle abc are A(-2,3) B(10,3) and C(4,10. prove by coordinate geometry that the median to side AB is also the
1 answer
506 views
please could someone explain to me what the 4 factors of the marking mix are.
I searched for marking mix and found nothing.
1 answer
504 views
why is copper used for electrical wiring?
The have writen 'Copper is a good conductor of electricity.' Is this correct? Yes,
1 answer
542 views
As a radio active material gets older, does it emit less, more or a constant level of radiation per second?
There is less matter
1 answer
345 views
Please Could someone tell me what:
1. A square number is 2. A cube number is 3. A triangle number is Thank you Square numbers are
1 answer
515 views
Could u help me with this question.
The number, N, of people who have heard a rumor spread by mass media at time, t, in days is
1 answer
561 views
which best describes the relationship between the lines with equations 8x+y=6 and 16x+2y=0.... please help me...
9 answers
651 views
differentiate y = tan^2(3x) + sec^2(3x)
2 answers
596 views
Find the sum. Express your answer in simplest form.
(14a^2 / 2b) + (3a / 2b) a) 14a^2 + 3a / 4b b) 11a^2 /2b c) 14a^2 + 3a / 2b
3 answers
555 views
The effects of training at a cellular, biomechanical and psychological level.
1 answer
332 views
Which of the following statements best explains the results associated with condition 5? Room Conditions +Additional Heat
1 answer
443 views
Find the LCD for the following rational expressions.
(-3 / x^2 - 2x + 1) (2x / x^2 - 5x + 4) a)( x - 1) (x - 4) b)(x - 1)^3 (x -
3 answers
676 views
who ruled in europe before the french revolution?
1 answer
399 views
my teacher gave us a question that says: compute the correlation coefficient (r) between pace of life and happiness.
if peace of
3 answers
677 views
Original quanity | new quantity . |price. |quanity supplied
demanded demanded 40 12$ 80 45 11$ 75 50 10$ 70 55 9$ 65 60 8$ 60 65
2 answers
542 views
Danielle was born with a birth defect which resulted in a lack of primary auditory cortex formation. Which of the following will
2 answers
890 views
lingustic of puerto rican americans
3 answers
366 views
S/A=4.5,D/A=4.5, N/E =.80
& A = D + E solve for N/S
4 answers
274 views
S/A= 4.5, D/A=4.5,N/E=.80, A= D+E. SOLVE FOR N/S
1 answer
243 views
S/A= 4.5, D/A=4.5,N/E=.80, A= D+E. SOLVE FOR N/S
1 answer
246 views
sin theta/2cos theta/2=1/2 sine theta show the identiy and work
1 answer
455 views
Which expression represents the sum of the following?
(3n / n^2 - 2n + 1) + (5 / n - 1) a) 8n - 1 / (n - 1)^3 b) 8n - 5 / (n -
1 answer
368 views
(3x^2y^4)(4xy^2)
in simplist form please help
2 answers
483 views
0.25 g of acid is titrated with .108 M NaOH. if it takes 27.22 mL of NaOH to reach the endpoint, what is the equivalent weight
3 answers
965 views
Compare and contrast liquids and gases.
1 answer
484 views
How can you demonstrate that finely ground fluids are not fluids.
4 answers
836 views
How do you distinguish between a fluid and a non- fluid.
1 answer
385 views
if 60 grams of potassium chlorate is dissolved into 100cm3 of water at the temperature of 60 degrees celsius is the solution
3 answers
326 views
if 20g of magnesium react with excess hcl how many grams og mgcl2 will be produced
2 answers
613 views
what would a clear definition of a presidential democratic governmental system?
1 answer
365 views
What is the frequency of the microwaves in a microwave oven? The wavelength is 12 cm.
I have to give the answer in GHz
1 answer
1,189 views
A high jumper of mass 80.0 kg consumes a meal of 4.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be
2 answers
613 views
Find the voltage increase when 12 J of work is done to push a 0.0013 C charge into an electric field.
3 answers
476 views
A high jumper of mass 80.0 kg consumes a meal of 4.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be
2 answers
566 views
On june 1, coble company ltd borrows $40,000 from first bank on a 6-month, $40,000, 9% note. The note matures on December 1
1 answer
423 views
Solve: 2 / x - 1 - 3/4 = 5 / x - 1
a) -2 b) 2 c) 3 d) -3
1 answer
296 views
a girl on stilts weighing 600N applying twice as much force as to boys weighing 600N each sitting down
1 answer
425 views
In a permutation
a) the selections are independent b) some items will never be used c) the order matters d) there must be at
1 answer
312 views
what causes some genetic disorders like sickle cell anemia
1 answer
465 views
solve: sqrt (m) + 7 = 5
a) (-2) b) none or 0 c) (2) d) (4)
1 answer
335 views
simplify: sqrt 2/7
a) sqrt (7) b) 2 c) sqrt (2) d) sqrt (14) / 7
3 answers
717 views
simplify the following radical expression : 4 sqrt (81)/ (16)
a) 2/3 b) 3/2 c) 2 d) 3
4 answers
365 views
simplify: sqrt (25) / (16)
a) 5/4 b) sqrt (5)/(4) c) sqrt (5)/ sqrt (4) d) 16 sqrt (5) / 4
3 answers
576 views
simplify: sqrt (90)
a) 30 b) 3 sqrt (10) c) 10 srt (3) d) 9 sqrt (3)
3 answers
546 views
What is the value of the expression 2x^2y / 4xy when x = 2 and y = 1?
a) 1 b) 2 c) 4 d) 3 b
4 answers
481 views
what is the non- permissiable value for the rational expression y + 5 / x - 3?
a) y = 0 b) y = 3 c) x = 0 d+ x = 3
3 answers
303 views
What is the value of the expression 5x^2y / 5x - y when x = 4 and y = 2?
a) 80 / 9 b)60 / 3 c) 16 / 5 d)8 / 1
2 answers
547 views
what are the non-permissible value for the rational expression x^2 + x - 6 / x^2 + x -12?
a) x = 3 and x = -4 b) x = 0 and x = -4
1 answer
411 views
What is the value of the expression 2x^2 y /4xy when x = 2 and y = 1?
a)1 b)2 c)3 d)4 Just need to know if my answer is right or
3 answers
529 views
what is the value of the expression 5x^2y / 5x - y when x = 4 and y = 2?
a) 8 / 1 b) 60 / 3 c) 80 / 9 d) 16 / 5 c
3 answers
313 views
what is the non-permissible value for the rational expression y + 5 / x - 3?
a) x = 0 b) x = 3 c) y = 3 d) y = 0 b
3 answers
395 views
Which of the following represents the data in the table?
x y 3 5 6 2 1/2 9 1 2/3 12 1 1/4 15 1 a) xy = 3 b)y = 15x c) y = 15 / x
3 answers
357 views
Which of the following is equivalent to the rational number [3x / 4x]?
a) 6x / 8x b) 12x / 24x c) 48x / 56x d) 3x / 5x a
4 answers
412 views
what is the non-permissible value for the rational expression y + 5 / x - 3?
a) x = 0 b) x = 3 c) y = 3 d) y = 0 c
1 answer
357 views
what are the non-permissible value for the rational expression (x^2 + x -6) / (x^2 + x -12)?
a) x = 0 and x = -2 b) x = 0 and x =
4 answers
1,455 views
Divide: p^2 + 4p - 5 / p^2 + 7p + 10 * p + 4 / p - 1
a) p + 2 b) p + 2 / p + 4 c) p+4 / p+2 d)2 Just need to know if my answer is
3 answers
388 views
Multiply: 8r + 16 / 24r - 24 * 6r - 6 / 3r + 6
a) 2/3r b) 2/3 c) 2 d) 2(r + 2) / 3r b
3 answers
301 views
Multiply: 12m^5 / -2m^2 * 6m^6 / 28m^3
a) 9m^5 / 7 b) -9m^5 /7 c) 9m^6 / 7 d) -9m^6 / 7 d
4 answers
546 views
simplify the rational expression x^2 - 81 / x^2 + 18x + 81
a) x - 9 / x + 9 b) x + 9 / x + 9 c) x + 9 / x - 9 d) x - 9 / x - 9 a
3 answers
732 views
Dwanye has 18 shirts hanging in his closet. He is going to donate 4 of them to a clothing drive. How many combinations of shirts
3 answers
358 views
simplify: 10^C6
a) 60 b) 210 c) 151,200 d) 1,000,000 c
3 answers
349 views
which expression represents the sum of the following?
7 / a - 1 + 3 / 2a - 2 a) 10 / 3a - 3 b) 17 / 2(a - 1) c) 17 / 2(a -1)^2 d)
3 answers
456 views
find the LCD for the following rational expressions. -3 / (x^2 - 2x) + 1 / 2x (x^2 - 5x + 4)
a) ( x - 1) (x - 4) b) (x - 1)^3 (x
2 answers
827 views
solve: 1 / x + 2 + 1 / x - 2= 1 / x^2 - 4
a)-2 b) 2 c)-1/2 d) 1/2
4 answers
306 views
solve: 2 / x - 1 - 3/4 = 5 / x - 1
a) -3 b) 3 c) 2 d) -2
4 answers
276 views
The 10th grade raffle sold 127 tickets. If they award 1st and 2nd prize, how many different pairs of winners are possible?
a)
3 answers
600 views
find the difference. express your answer in simplest form.
x^2 + 3 / x - 2x^2 + 5 / x a)-x^2 - 8 / 2x b)-x^2 - 2 / x c)3x^2 - 8 /
2 answers
488 views
Which expression represents the sum of the following?
5 / 2t + 1 + -1 / 4t^2 + 4t + 1 a)10t + 4 / (2t + 1)^2 b) 4 / (2t + 1)^3
2 answers
1,143 views
Find the LCD for the following rational expressions.
-3 / x^2 - 2x + 1 2x / x^2 - 5x + 4 a)(x - 1) (x + 4) b)(x - 1)^2 (x - 4)
1 answer
443 views
Which expression represents the sum of the following?
(5)/ (2t + 1) + (-1) / (4t^2 + 4t + 1) a) 10t + 4 / (2t + 1)^2 b) 4 / (2t +
3 answers
405 views
Determine the instantaneous rate of change of y=tanx at x=1 to 3 decimal places
1 answer
466 views
Let's say Glenn's trip around the earth took about 5 hours. that is how many times as long as Shepard's flight?
4 answers
404 views
Oblique rays are different from vertical rays because they
a) contain more solar energy b) strike the earth at an angle greater
1 answer
398 views
Oblique rays are different from vertical rays because they
a) contain more solar energy b) strike the earth at an angle greater
1 answer
387 views
Oblique rays are different from vertical rays because they
a) contain more solar energy b) strike the earth at an angle greater
1 answer
403 views
The processes of weathering that occurs when rocks and minerals react chemically with water and atomspheric gases is_______.
3 answers
358 views
Ozone, a gas found in the upper stratosphere and lower mesosphere, would burn our throats if we tried to breathe it. ozone is
4 answers
739 views
The pressure created by the weight of air is greatest_______.
3 answers
306 views
The chemical substance found in the atmosphere exists as a / an______.
a) mixture b) radical c) element d) compund e) solid I
3 answers
416 views
the absorption of heat by any substance is dependant upon
6 answers
359 views
As the atmosphere heats, the air _______ and becomes _________.?
1 answer
370 views
the number 12 is 14 greater than twice a number. find the number.
3 answers
369 views
can someone write me a acrostic poem on the word PHOTOSYNTHESIS, thank you
4 answers
724 views
A student (m = 68 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a
4 answers
2,864 views
A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +20.5 rad/s. Then, the brakes are applied. In
1 answer
630 views
sally x amount of money. bob has three times as much as sally, less than 14.62. write an expression using x to see how much bob
1 answer
231 views
An object is placed on an inclined plane which forms an angle B = 18ยบ with the horizontal. An external force F of magnitude
1 answer
489 views
what does a sense of purpose mean to you
1 answer
335 views
Suppose that a decision-maker's preferences can be represented by the expected value of a utility function u. Find another
1 answer
453 views
Describe how air is modified by the nasal passages, and describe the special structures that allow this modification
1 answer
381 views
Describe how olfaction is accomplished by the nasal passages
1 answer
365 views
Describe 4 lung volumes that are measured by a spirometer
1 answer
337 views
Describe each part of the respiratory passage regarding tissue, and why that tissue would be appropriate for that area.
THANK
1 answer
363 views
Is this correct? Mexico city is north of the tropic of capricorn?
6 answers
1,273 views
One bank pays 5.5 percent annual interest, while a second bank pays
4.5 percent annual interest. Determine how much longer it
3 answers
2,095 views
Is this correct?
1.The prime meridian passes through both the north and south pole. 2. The Tropic of Cancer is to the Tropic of
4 answers
682 views
what are the possesive and the plural possesive forms of the following words:
shelf wrench bus Thank You
2 answers
687 views
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