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Alan
Questions (194)
The differential equation below models the temperature of an 87°C cup of coffee in a 19°C room, where it is known that the
1 answer
345 views
Which layer of the earth has the largest radius
1 answer
270 views
Two ships leave a harbor at the same time. One ship travels on a bearing s11w at 16 miles per hour. The other ship travels on a
3 answers
545 views
How have Russians adapted to their environment?
1 answer
260 views
An airplane flies at 150 km/h in a direction 30o South of East. At the same time a 50 km/h wind blows the plane in a direction
4 answers
969 views
A pollster conducts a survey by phone. The probability that a call does not result in a person taking this survey is 85%.
2 answers
526 views
Of 20 test scores, seven are less than or equal to 81. What is the percentile rank of a test score of 81?
3 answers
847 views
The British naval blockade of the North Sea Contributed to?
2 answers
684 views
For parametric equations x=a cos t
And y=b sin t Describe how the values of a and b determine which comic section will be traced.
1 answer
484 views
What type of conic is represented by the polar equation?
r= 1 / 4-6cos theta Ellipse Hyperbola Parabola Circle Help! Homework
3 answers
1,944 views
1.Which of the following should be included in your research presentation? Select all that apply (2 answers)
***A.a broad topic
50 answers
8,517 views
How are white and yellow produced by the opponent process?
2 answers
529 views
Suppose H(X)=(6x-5)^3
Find two functions f and g such that (f•g)(x)=H(x) Neither function can be the parent/ identity function
4 answers
3,333 views
if an aircraft flying at 250km/h at bearing N 45East for 1 hour meets a wind from the NW at 50km/h, then how long will it take
1 answer
517 views
There are 36 books on a bookcase.there are 9 nonfiction,12 fiction,and 15 science fiction. What is the probability of choosing a
2 answers
613 views
What is the Net Ionic Equation for Nitric Acid and Potassium Carbonate?
4 answers
3,051 views
What is the concentration in each of the following solutions?
A) 240 mL of 0.200 M KNO3 is added to 160 mL of water. B) 2.25g of
3 answers
775 views
The quantity of Cl- in a water supply is determined by titrating the sample with Ag+. What mass of chloride ion is present in a
2 answers
613 views
7. A student conducts an experiment on a different hydrate. The empty crucible is heated to a constant
mass of 24.330. A sample
2 answers
1,076 views
-3x+2y=-6
1 answer
257 views
5 grams of H2 reacts with 16 g of O2, which in excess?
2H2(g)+O2(g)=2H2O(g)
3 answers
528 views
A wheel 2ft wide rolls a distance of .015 miles in .005 hours. What is the wheels speed in rpm's?
1 answer
372 views
The diagonals of rectangle ABCD intersect at point E. If AE=2x+5, and BD=5x+2, what is AC?
5 answers
2,907 views
Nicotine is a basic substance and its dissociation constant is about 1.0 x 10-6. To prepare a solution
water with 0.01 mol L-1,
1 answer
480 views
An amount of 25ml of a 0.8 Molar solution of pure KNO3 and placed in a volumetric flask. Is added water until the thin volume
1 answer
498 views
An aluminum sheet used for food preservation weighs about 0.05 g/cm-2 How many electrons are in a 1 cm2 of this sheet?
2 answers
534 views
1) Given that p(-3), p(-1), and p(5)=0, which expression could be p(x)?
A)x^3-x^2-17x-15 B)x^3+x^2-17x+15 C)x^3-3x^2-13x+15
3 answers
1,081 views
Hello again! I would appreciate help very much on this. Thank you!
1) For which values of x is y equal to 16 in the equation
1 answer
311 views
1. Which function represents an initial population that increases 22% per year where A represents the initial value and X
4 answers
2,196 views
1) Malene rented a compact car for 10 days and drove it 620 miles for a total cost of 412$. Patrick rented a compact car at the
4 answers
596 views
1) Given that p(-3), p(-1), and p(5)=0, which expression could be p(x)?
A)x^3-x^2-17x-15 B)x^3+x^2-17x+15 C)x^3-3x^2-13x+15**
4 answers
3,575 views
1)If the roots of a quadratic equation are -2 and 3, the equation can be written as
A) (x+2)(x+3) B) (x-2)(x+3)** C) (x+2)(x-2)
2 answers
575 views
A constant retarding torque of 12 N*m stops a rolling 0.80 m diameter wheel in a distance of 15 m. How much work does the torque
3 answers
1,106 views
Three blocks are connected on the table as shown below. The coefficient of kinetic friction between the block of mass m2 and the
2 answers
1,182 views
Mary wants to hang a mirror in her room. The mirror and frame must have an area of 7 square feet. The mirror is 2 feet wide and
7 answers
2,736 views
What were the major changes in sciences view of the nature of the universe and humanity's place in it between 1850 and 1914? How
4 answers
467 views
The US Post Office has a limit on the size of packages it will accept for mailing. The length plus the girth must be 84 inches
4 answers
689 views
Mimi's Market sold 24 heads of lettuce one morning. That afternoon 2/7 of the remaining heads of lettuce were sold. The number
4 answers
897 views
What are some lifestyles for the following countries:
-Kazakhstan -Kyrgyzstan -Latvia -Liechtenstein
3 answers
398 views
A ball rolling with initial velocity of 40m/s(W) undergoes an acceleration of 5.0m/s^2(N) for a period of 6.0seconds.
(A) what is
4 answers
3,142 views
A ball rolling with initial velocity of 40m/s(W) undergoes an acceleration of 5.0m/s^2(N) for a period of 6.0seconds.
(A) what is
3 answers
895 views
Mathew is attending a very loud concert by the discarded. To avoid permanent ear damage he decides to move farther from the
6 answers
2,250 views
Fred has 15 cows
John has twice as many cows as Fred had when Fred had as many cows as John has now how many cows has John?
15 answers
4,270 views
What ketone or aldehyde would be reduced to produce each alcohol, respectively:
a. 3,3-Dimethyl butan-2-ol b. 3-Methyl butan-1-ol
3 answers
615 views
Evaluate the expression for the given value.
x = 3; y = -5; z = -2 x(yz)^2 - 3(xyz)^0 + 2x^2yz^2 = 3(-5 * -2)^2 - 3(3 * -5 *
3 answers
541 views
Evaluate the expression for the given value.
x = -2; y = 3; z = -1 -2x^2y - 3xy^2z - xz =
3 answers
474 views
In a double-stranded DNA molecule, the percentage of Guanine can never be more than ___%. Why?
1 answer
392 views
Which of the following statements must be True? Check all that apply.
The number of Adenines in single-stranded DNA equals the
1 answer
750 views
Solve the following:
-6x + 3 <= 25
1 answer
294 views
Solve the following.
2(x + 1) - 4 <= 1/4(12x - 24)
1 answer
301 views
Evaluate when x = 2, y = -5, z = 3.
x^2 - y = 3 3z - 4(y + 1) - y^2 = 0 x - yz = -13
2 answers
629 views
Simplify or solve as appropriate. Enter ns if there's no solution or all if the solution is all real numbers.
2 - 3(x + 5)) = 10
1 answer
314 views
Using the linear equation y = -3x + 5, complete the table of values (T-Chart) and choose the correct graph.
X = -2 Y = _ X = -1 Y
2 answers
629 views
Using the linear equation y = 5, answer each of the following.
Choose all points that would be on this line. (0,5), (5,5), (2,5),
1 answer
386 views
Find the x-intercept and the y-intercept of the linear equation 3x + 4y = 12. Write each intercept as an ordered pair.
3 answers
1,805 views
8 = p - 5
Answer: p = 13 21 + y = 35 Answer: y = 14 6x = 54 Answer: x = 9
3 answers
339 views
Solve -4x is less then equal to -16.
I got x is less then equal to 4. Is this correct I'm kind of confused with this question.
4 answers
923 views
Solve for X.
X/8 = -4/9
1 answer
267 views
Evaluate the following expressions when x = -2, y = 6, and z = -4
y^2 + 3z 5y - 3(x^2 + 1) + z
3 answers
951 views
When driving to the beach, you drive 240 miles on 9 gallons of gas. When you arrive at the beach you fill up your gas tank.
2 answers
972 views
Choose True or False for each of the following.
87% is equivalent to 0.87 True or False 1.29 is equivalent to 129% True or False
2 answers
873 views
Convert each of the following. Round your answer to two decimal places if necessary.
0.68 miles = 43084.80 inches 10259 feet =
1 answer
368 views
If a boat travels at 5 miles per hour, how many feet per second does it travel? Round your answer to two decimal places if
1 answer
319 views
Three friends go to their favorite seafood restaurant for dinner. They decide to order a crab cake appetizer. When it arrives
2 answers
512 views
Your favorite chocolate chip cookie recipe makes 4 dozen cookies. Among the other ingredients, the recipe calls for
> 1 cup of
2 answers
1,197 views
Perform the indicated operation and simplify.
1. 1/4 + 1/3 = 2/3 2. 4/7 - 5/6 = 1/6 3. 3/5 * -4/7 = -12/35 4. 10/11 divided by
3 answers
441 views
Is 10.512 * 10^3 written in proper scientific notation? If not rewrite the number in proper scientific notation.
3 answers
514 views
You have a table in your living room with a round top that has a diameter of 2 1/2 feet. You would like to put a piece of glass
2 answers
542 views
You pull into a gas station where the sign says the gas costs $3.679. To fill up your tank you need 20 1/2 gallons of gas. You
3 answers
385 views
Perform the indicated operation. Write your answer as a simplified fraction.
1. 1/3 + 0.25 = 7/12 2. 0.3125 - 1/4 = 1/16 3. -7/10
3 answers
1,191 views
Convert the following decimals to a simplified mixed number.
1. 0.33 = 1/3 2. 1.875 = 1 7/8
1 answer
464 views
You and your friend ordered a 12 inch pizza to split for lunch. How many square inches of pizza do you each get to eat? Round
2 answers
533 views
You live 35 1/3 miles from your grandmother's house. You're workplace is 7 2/5 miles from your grandmother's house. If you drive
2 answers
585 views
Multiply each of the following. Write your answer as a simplified fraction.
1. 4/7 * 5 = 20/7 2. 15/28 * 7/9 = 105/252 3. -3 1/5
4 answers
566 views
Add each of the following. Write answer as a simplified improper fraction.
1. 3/25 + 8/35 = 61/175 2. 5 1/4 + 3 5/12 = 26/3 3. -4
3 answers
486 views
Convert the following fractions to decimals. Round to 2 decimal places if necessary.
1. 1/4 2. -3 7/16 3. 25/13
5 answers
635 views
Simplify each of the following.
1. 42/48 2. -15/35 3. 119/210
1 answer
347 views
Write as an improper fraction.
1. 7 3/5 2. -12 1/2 3. 41 4/6
1 answer
382 views
Write as a mixed number.
1. 13/11 2. -33/6
1 answer
417 views
How did having few industries affect southerners.
Can someone please help me with this question
1 answer
418 views
I have this weird question that has to do with linear equations (I think), and this is what it says.
Let f(x) = 4x - 5 A. Find
1 answer
397 views
The parabola, B, represents a shuriken's maximum throwing distance, which was 60 meters of the enemy ninja, A, from a height of
1 answer
505 views
N-type silicon (Si) has been produced by doping with phosphorus (P). The charge-carrier population based on electrical
7 answers
620 views
A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens
3 answers
565 views
Consider the heterogeneous equilibrium process shown below.
C(s) + CO2(g) 2 CO(g) At 700.°C, the total pressure of the system is
4 answers
2,053 views
What is x when 6(x+4)+4(x+5)=74
2 answers
641 views
What is x when 6(x+4)+4(x+5)=74
1 answer
273 views
Subtract.
[2x/(x^2-y^2)]-[7/(y-x)] Thank you! :)
1 answer
284 views
A jet leaves an airport on a bearing of N 77* W and travels for 243 mi. It then turns and continues on a bearing of S 13* W for
1 answer
490 views
how do you use a table to find a solution to
4m - 5 = 11
2 answers
497 views
A cone is created from a paper circle with a 90° sector cut from it. The paper along the remaining circumference of the circle
4 answers
2,059 views
Sketch the graph of f(x)=(x^2 + 2)/x^2 - 4.
Fund the vertical and horizontal asymptotes, the critical points, the points of
1 answer
892 views
Sketch the graph of f(x)=x+2/x-4. Find the vertical and horizontal asymptotes, critical points, concave up/down, and inflection
1 answer
527 views
Sketch the graph of f(x)=-x^4 + 4x^3 - 16x + 16:
Find the critical points, concave up/down, inflection points, vertical
1 answer
490 views
Find the price elasticity of demand. The demand function for the product is p=40-2x
1 answer
459 views
Find the relative extrema and absolute extrema if any. Use the first derivative test for the function f(x)=x^3-3x+2
1 answer
510 views
Find the equation of the tangent line to the graph of √(xy)=x-2y at (4,1)
2 answers
953 views
Find the points at which f(x)=x^2(x+1)^3 has a horizontal tangent.
1 answer
366 views
What amperage is required to plate out .250 mol Cr from a Cr+3 solution in a period of 8.00 h?
4 answers
2,442 views
The New York Times cost $0.15 in 1970 and $0.75 in 2000. The average
wage in manufacturing was $3.23 per hour in 1970 and $14.32
4 answers
3,943 views
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