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Kate
Questions (981)
a dog can run as fast as 39.35 miles per hour.without calculating,would about 12,14,or 16 be a reasonable answer for the number
2 answers
720 views
There are 32 teams in the NFL. 16 of them are in the AFL. The other 16 are in the NFC. At the beginning of the season Julia
1 answer
731 views
1.50.but can you explain more detailed about the 0.2 thingy.
1 answer
512 views
20 cents. but what if the next number is 1.5.Then how will i solve it.
1 answer
286 views
but why is 2.0 bigger than 0.15?
1 answer
279 views
sally's pencil is 15 hundredths of a meter long(0.15).Edward's pencil is 2 tenths a meter long(0.2).whose pencil is longer?
4 answers
564 views
Lubbock, Texas ran a survey and determined that 27% of all households
subscribed to the daily paper, 32% watched the evening
0 answers
1,092 views
An office has 8 secretaries and 5 computer operators. If one employee is
picked at random, find the probability that it will be a
1 answer
1,260 views
If a card is drawn at random from a deck of 52, what is the probability that
it is an ace or a heart?
1 answer
394 views
37% of all doctors are family practitioners. If four doctors are picked at
random, what is the probability that all four are
0 answers
996 views
A resturant manager wants to order new glasses. The ratio of the number of water glasses to the number of juice glasses in the
1 answer
352 views
Estimates of the quantity of water required in the production of a pound, or Kg, of beef range
from _______________ to
1 answer
756 views
Estimates of the quantity of water required in the production of a pound, or Kg, of beef range
from _______________ to
0 answers
658 views
f(x)=-(x-1/2)^2(x+1)
How to find the y-intercept of the function?
2 answers
510 views
A discus is thrown from a height of 3 feet with an initial velocity of 55 ft/s at an angle of 44° with the horizontal. How long
1 answer
2,256 views
So i need to figure out what the angle and speed was of a foot ball that traveled 59 yards how can i figure that out? what
1 answer
411 views
which of the following is there no net work?
A car accelerates down a hill. A car travels at constant speed on a flat road. A car
2 answers
1,140 views
Normally, the first 3 key points of a sine curve are (0,0), (90,1), and (180,0). If the function is changed to
1 answer
591 views
How long will it take for a 1 g sample of Polonium 210 to lose all but 1/28 of its radioactivity if the half-life is 140 d?
0 answers
467 views
How long will it take for a 1 g sample of Polonium 210 to lose all but 1/28 of its radioactivity if the half-life is 140 d?
0 answers
426 views
In a recent dig, a human skeleton was unearthed. It was later found that the amount of 14C in it had decayed to (1/rt8) of its
2 answers
907 views
In 1976 a research hospital bought half a gram of radium for cancer research. Assuming the hospital is still exists, how much of
1 answer
2,321 views
In 1976 a research hospital bought half a gram of radium for cancer research. Assuming the hospital is still exists, how much of
0 answers
551 views
y=-x^2+1.5x+2
Find the maximum value.
1 answer
360 views
What are some examples of
exponential function (Using the formula: Al = A0(1/2)^t/h ), trig functions that are used to find
1 answer
559 views
Use the information provided to write the vertex form equation of each parabola.
a)y + 60x + 294 = -3x^2 b)−(y+1) = (x−4)^2
1 answer
988 views
A piece of cardboard has a length of 60cm and a width of 40cm. In order to make the cardboard into an open box, a box with no
2 answers
1,757 views
Simplify: (3x+5)^3-3x(x^2-1)
1 answer
447 views
If f(x)=5x+2 and g(x)=x^2+3, then what is f(g(x))?
1 answer
271 views
Which of the following is a solution to the trigonometric equation
2cos2 x - 5cos x + 2 = 0? A) 240 degrees B) 135 degrees C) 270
1 answer
538 views
Identify the period in degrees and radians:
y = sin2x: y = cos(3/2)x: y = 2sin(1/2)x: y = 1.5cos0.25x:
1 answer
562 views
Given that the formula is y=-9cos12x+9
What is k in radian?
1 answer
951 views
Time Height above ground
0 45 3 65 6 80 9 85 12 80 15 65 18 45 21 25 24 10 27 5 30 10 33 25 36 45 I know the following things:
0 answers
414 views
Make a word document with the key points (in tables/charts) for the following functions, given in the form y=asink(x+d)+c
Start
3 answers
512 views
1) Find three functions with unlimited domains and ranges.
2) Find two functions with restricted domains. 3) Find two functions
0 answers
562 views
A ski resort is installing tows on its new ski runs. The baby hill has a vertical height of 500.0 m and is inclined at 42o.
3 answers
648 views
A football player is attempting a field goal. The angle formed by the player's position on the field and the line of sight to
3 answers
1,461 views
Prove each identity:
a) 1-cos^2x=tan^2xcos^2x b) cos^2x + 2sin^2x-1 = sin^2x I also tried a question on my own: tan^2x = (1 –
1 answer
721 views
Prove each of the following identities.
a)tan^2x = 1 – cos^2x/cos^2x b)sinx/1 – sin^2x = tanx/cosx
1 answer
467 views
Solve for all possible values of x where O°≤x360°.
sin x=2/3.
1 answer
500 views
Solve for all possible values of x where O°≤x360°.
sin x=2/3. I do not understand these types of questions please answer in
1 answer
586 views
Solve for all possible values of x where O°≤x≤360°.
tan x = -1/√3 cos x = 1/2
1 answer
506 views
Determine the EXACT values of each of the following:
a) sin 240° b) cos 135°
2 answers
557 views
Find the angle (Θ) for a terminal arm with the following coordinates(round to one decimal place):
(5,8)
3 answers
476 views
What are some examples of acute and obtuse triangles in a home?
1 answer
498 views
Determine the exact value of:
sin30° + cos225° + sin150° + cos330°
1 answer
547 views
The winner of a popular lottery is offered one of two options:
i) a lump sum of $102 500 ii) $1000 every month for 10 years If
1 answer
863 views
How much would you have to invest at 6.3% interest for it to have grown to $67.06 in five years
1 answer
361 views
You invest $25 in an account earning 7.5% interest per year. After how many years is it worth $42.50?
4 answers
441 views
Sam gets deposits a total of $3500 every three months to the bank which earns a 6.5% p/a. After five years how much will he have
1 answer
585 views
Stacey buys a $1000 RRSP today. After one year she adds $2500. By the end of the second year, the money has grown to $3851 as it
2 answers
431 views
Determine the present value of the annuity:
$1500 at the end of each 3-month period, for 5 years, at 4.5% p/a, compounded
2 answers
629 views
Imagine you have invested $500 in an account that pays 5% simple interest per year. Can you find an arithmetic sequence to look
1 answer
558 views
So I had an exam today and one of the questions is bugging me. Our professor is out of town for a few days, so we had a proctor
4 answers
518 views
So I had an exam today and one of the questions is bugging me. Our professor is out of town for a few days, so we had a proctor
1 answer
478 views
tn - tn-1 = 2n + 3; t1 = 10
Find the first five terms in the sequence using this recursive formuls
1 answer
463 views
tn - tn-1 = 2n + 3
Find the first five terms in the sequence using this recursive formuls
1 answer
625 views
How many grams of acetic acid (MW = 60 g/mol, pKa=4.75) are needed to change 1000 L of water with a pH of 11 to a pH of 5.5?
0 answers
471 views
Halley's comet appears in the sky approximately once every 77 years. If the comet was seen in by Astronomer Edmund Halley in
1 answer
555 views
How many grams of HCl are needed to change 1000 L of water with a pH of 11 to a pH of 5.5?
0 answers
375 views
A 240 g block on a 41 cm-long string swings in a circle on a horizontal, frictionless table at 73 rpm.
(a) What is the speed of
1 answer
1,198 views
A 5.0 m diameter merry-go-round is initially turning with a 4.6 s period. What is the speed of a child on the rim?
1 answer
1,423 views
The first term in a sequence of number is t1 = 4. The terms that follow are defined by the formula: tn - tn-1 = 3n -2. Determine
1 answer
581 views
A penguin sliding on ice has an initial velocity of 5 m/s due north. Due to a strong wind, the penguin has an acceleration of 2
1 answer
590 views
Three forces act on a 3 kg box: 10 N South-west, 17 N North-west, 5 N due East. What is the acceleration of the box?
1 answer
586 views
You throw a ball downwards with a speed of 10 m/s. It hits the ground 4 meters below from where you threw it. How long is the
1 answer
526 views
A .5 m long, 3 cm diameter metal bar has a Young’s Modulus of 7.0x1010 N/m2. If a 50,000 N force is applied to the end of the
0 answers
1,205 views
A 3.0 m tall, 42 cm diameter concrete column supports a 230,000 kg load. By how much is the column compressed? Assume Young's
1 answer
1,320 views
a 10cm long spring is attached to the ceiling. when a 2.6kg mass is hung from it, the spring stretched to a length of 15cm.
what
2 answers
3,776 views
a skater holds her arms outstretched as she spins at 140 rpm. What is the speed of her hands if they are 125 cm apart?
1 answer
2,484 views
A 36 kg box hangs from a rope. What is the tension in the rope if the following are true?
(a) The box moves up a steady 5.0 m/s?
1 answer
1,969 views
A 20 kg crate is placed on a horizontal conveyor belt. The materials are such that μs = 0.6 and μk = 0.3.
(c) What is the
4 answers
2,351 views
How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?
1 answer
933 views
How much force does an 60 kg astronaut exert on his chair while accelerating straight up at 8m/s squared?
1 answer
772 views
A 900 kg car pushes a 1900 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the
3 answers
11,099 views
A go-cart has an initial speed of 23.4 m/sec. Fifteen seconds later the go-cart has a final speed of 36.8 m/sec. What is the
1 answer
1,588 views
I could use some help on this please.
Write a linear function that satisfies the given conditions: h(-1) = 4, h(0) = -5 Thanks!!!
1 answer
454 views
In a physics lab experiment, a spring clamped to the table shoots a 18 g ball horizontally. When the spring is compressed 20 cm,
0 answers
829 views
Think about Macbeth’s position at the conclusion of Act III. In what ways has his ambition, which allowed him to obtain the
1 answer
696 views
I just finished reading Macbeth for school. My teacher assigned a essay for us to do. She asked if we think the witches'
0 answers
556 views
A 1.00-L sample of dry air at 25 °C contains 0.0319 mol N2, 0.00856 mol O2, ... The main components of dry air, by volume, are
0 answers
892 views
Calculate the amount of heat required to raise the temperature of a 33 g sample of water from 6 Celsius to 24 Celsius.
2 answers
710 views
Among 17 metal parts produced in a machine shop, 6 are defective. If a random sample of four of these metal parts is selected,
1 answer
1,115 views
Solve for x:
{{{ln(x)+x=5}}}
0 answers
341 views
determine the dimensions of a rectangular solid (with a square base) with maximum volume if it's surface area is 289 meters
1 answer
872 views
Solve for x:
2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the
0 answers
338 views
What economic effects did Islam have in India? I'm having a tough time finding any info for an ESP (Economy, Society, Politics)
5 answers
683 views
A 8000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled
3 answers
3,774 views
A mixture of aluminum and zinc metal is used in 2 experiments described below:
A- A 1.7 gram sample of the mixture is reacted
1 answer
706 views
A mixture of aluminum and zinc metal is used in 2 experiments described below:
A- A 1.7 gram sample of the mixture is reacted
6 answers
892 views
Determine the final concentration of 20ml of 5M NaCl of solutions after 30ml of water has been added.
1 answer
634 views
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 600 N. As the elevator
1 answer
2,066 views
A certain piece of wire has a resistance of 250 ohms. if the wire is cut in three pieces and the cross sectional area of each
1 answer
1,166 views
Quadrilateral QRST has two pairs of congruent sides, but it is not a parallelogram. What figure is it? What further condition
3 answers
2,942 views
Can you prove ABCD is a parallelogram based on the given information? Explain.
Given: x = 5, y = 4 Prove: ABCD is a
1 answer
1,027 views
How do I find the x values at which the tangents to the graphs f(x)=2x^2 and g(x)=x^3 have the same slope?
2 answers
984 views
Consider 100g of 5.5% (mass) solution of NaNO3. Complete the following table, before calculating molarity, molality and mole
2 answers
910 views
How did a newfound sense of commercialism aid in the development of Europe as global power culturally and economically during
2 answers
443 views
The antiderivative of arctan(4t)dt by integration of parts.
1 answer
1,255 views
A 20.0 g marble sliding to the right at 58.8 cm/s overtakes and collides elastically with a 10.0 g marble moving in the same
0 answers
623 views
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