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Sam
Questions (2,385)
Find the derivative of [(2+x)/(x-3)]^(2/5)
I tried the power of a function rule, quotient rule, the chain rule but keep getting
2 answers
751 views
A map has A scale of 1.25000.two towns are 15cm apart on the map.how far apart in real life ? answer in metres ?
2 answers
986 views
What is the boiling point (in °C) of a solution of 9.22 g of I2 in 66.5 g of toluene, assuming the I2 is nonvolatile? (For
3 answers
496 views
An apple pie uses 4 cups of apples and 3 cups of flour. An apple cobbler uses 2 cups of apples and 3 cups of flour. You have 16
2 answers
754 views
A home run is hit such a way that the baseball just clears a wall 26 m high located 114 m from home plate. The ball is hit at an
2 answers
712 views
A particle travels between two parallel ver- tical walls separated by 12 m. It moves to- ward the opposing wall at a constant
1 answer
557 views
Write an equation in point-slope form for the line through the given point with the given slope. (-3,-5); m=-2/5
1 answer
569 views
A student prepared a 0.03M solution of formic acid (HCHO2) and measured its PH at 25oc and it was found to be 4.67. Calculate Ka
0 answers
1,027 views
The cooling system of a car has a capacity of 20 liters. If the system is currently filled with a mixture that is 60%
1 answer
690 views
How much of a(n) 60% orange juice drink must be mixed with 8 gallons of a 30% orange juice drink to obtain a mixture that is
2 answers
3,936 views
The manager of a store selling tea plans to mix a more expensive tea that costs $5 per pound with a less expensive tea that
1 answer
769 views
The perimeter of a rectangular garden is 108 meters. The length is 6 meters longer than twice the width. Find the dimensions of
4 answers
3,950 views
When doing a calculation involving zoning laws, Tim comes across the following expression:
fraction numerator a minus open
0 answers
573 views
I need to explain how to make a triangle using a protractor and a string and the aas congruence theorem. I'm giving no angles. I
0 answers
1,039 views
If a kayak can travel straight across a 50m wide river and can paddle at 8 m/s and the river flow has a current of 5 m/s west
0 answers
579 views
Tucker, from a 20 m tower, throws a ball horizontally that travels a distance of 60 m. At what speed, in m/s, is the ball
1 answer
451 views
Procedure:
1) Accurately weigh approximately 0.40 g of Dimethyl maleate into a 50 mL round bottom flask that possesses a ground
0 answers
498 views
Which most accurately describe the impact of the Crusades on the Jewish community?
2 answers
929 views
Show sin((a-b)/2) < ((a-b)/2). Why is this true?
1 answer
334 views
A boy is 42 years younger than his father .In 8 years' times , he will be 1/4 times as old as his father .Find their present
1 answer
676 views
A tourist traveled 10 km away from the city by bus, and then continued his journey by foot in the same direction at the speed of
1 answer
1,716 views
If a+b=c and b+c=d and c+d=e and a=7 and e=5, find a+b+c+d+e.
1 answer
267 views
A figure has vertices E(-3, 1), F(1, 1) and G(4, 5). After a transformation, the image of the figure has vertices at E'(-3, -1),
1 answer
1,344 views
5 buckets contain a total of 100 tennis balls. How many balls are in each bucket if each bucket contains n more balls than the
1 answer
634 views
Water molecules can dissociate into hydronium ions
(H3O+ ,often just called H+ for shorthand) and hydroxide ions (OH-). The
1 answer
1,310 views
The pH of a solution is 6.5 What are the [H+] and [OH-] of the solution?
2 answers
2,403 views
What is the pH of a solution with a [OH-] of 10^-2
1 answer
349 views
What is the pH of a solution with a [H+]=10^-8?
0 answers
337 views
Which element is shared by both "Stolen Day" and "The Night the Bed Fell"?
a)strong imaginations b)loving parental figures
51 answers
7,849 views
3. which of the following statements about early American and colonial literature is true?
A) the literature primarily focuses on
1 answer
2,804 views
2. Read the following Papago song. Identify its purpose.
"No talking, no talking. The snow is falling. And the wind seems to be
2 answers
1,094 views
five types of microscopes in order from lowest resolution to highest
2 answers
1,315 views
if an atom has 17 electrons and its mass number is 35, calculate the following: number of protons, atomic number, and number of
3 answers
3,835 views
1. An atom that loses or gains electrons is called a(n)____.
isotope proton neutron ion*** 2.Which subatomic particles are most
2 answers
2,663 views
For all real numbers a and b, 2a*b = a^2+b^2.
True or false? If false, explain your reasoning. I'm pretty sure this is false, but
2 answers
512 views
The author of "My Brother's Keeper", includes the line "and Jamie thought to himself, this time it must be bad" in Jamie's phone
1 answer
1,514 views
A work of art is considered prehistoric if it is:
9 answers
5,744 views
Your house is 1030 meters from school. Your friend's house is 1.5 Kilometers from school. Whose house is father from school?
1 answer
835 views
Which side of the health triangle corresponds to having loving relationships with others and giving and accepting help?
1 answer
662 views
A 100 gallon tank is being drained at a rate of 5 gallons per minute. A second tank containing 10 gallons of water is being
1 answer
1,026 views
Let n represent the number of similar resistors in a circuit. Each resistor has a resistance of r. When the resistors are
2 answers
1,490 views
Two resistors of resistances 3 ohms and 6 ohms are connected in a parallel across a 9 V battery. What is the equivalent
5 answers
4,451 views
Hi! I need help with this assignment. I have 2 books to compare and contrast. Full Cicada Moon by Marilyn Hilton and Same But
5 answers
660 views
Two balls are drawn in succession, without replacement, out of a box containing 2 red and 5 white balls. What is the probability
1 answer
769 views
Evaluate the double integral ∫∫ y dA over D, where
D is the top half of the disk with center the origin and radius 5?
1 answer
718 views
For a normal distribution with mean of 80 and a standard deviation of 8, find the number of standard deviations the raw score 67
1 answer
528 views
For a normal distribution with mean of 80 and a standard deviation of 8, find the number of standard deviations the raw score 67
2 answers
571 views
A player drawn a face card and a 3 and a 4 from a standard deck of cards (without an ace). According to the rules of blackjack a
1 answer
546 views
use the triangle and the give information to solve the triangle.
a=, c=, find b, a, and B
1 answer
443 views
Read this sentence from the third paragraph:
First, it has large fins at the top of its head that look like ears. What is the
2 answers
1,720 views
A bus travels 180 miles in same time a car travels 240 miles. if cars speed is 15mph faster than speed of bus, find the speed of
1 answer
1,207 views
32.17Grams rounded to the nearest gram
17 answers
8,294 views
The area of a rectangle is
represented by x2 – 5c – 14. What are the dimensions? could someone show me how to set this up to
1 answer
527 views
A source delivers an AC voltage of the form Δv = (89.0 V) sin (70πt), where Δv is in volts and t is in seconds, to a
0 answers
894 views
Notice that the curve given by the parametric equations x=25−t^2 y=t^3−16t is symmetric about the
x-axis. (If t gives us the
1 answer
6,250 views
Find the length of the curve defined by the parametric equations x = 2/3t,
y = 2ln((t/3)^2−1) from t =6 to t =7.
1 answer
1,387 views
If x = 18cos^3θ and y = 18sin^3θ, find the total length of the curve swept out by the point (x,y) as θ ranges from 0 to 2π.
1 answer
2,928 views
Consider the curve defined by the equation y = 4x^3 +3x. Set up an integral that represents the length of curve from the point
1 answer
1,682 views
can someone help me set up these two equations please.
The sum of the distance, d, divided by 4 and 6 amounts to 2 subtracted
1 answer
435 views
can someone help me set up these two equations please.
The sum of the distance, d, divided by 4 and 6 amounts to 2 subtracted
4 answers
515 views
Mallory needs 4 3/4 cups of flour for a bread recipe. She has 2 2/3 cups, how many more cups does she need?
1 answer
386 views
A metal rod of mass m slides without friction along two parallel horizontal rails separated by a distance L and connected by a
1 answer
2,150 views
A coil has an inductance of 9.00 mH, and the current in it changes from 0.200 A to 1.50 A in a time interval of 0.300 s. Find
2 answers
3,466 views
Have a tommorrow and want to make sure I understand the COT (cotangent) formula could someone give me a problem to do and check
2 answers
438 views
In this problem, you will investigate the error in the nth degree Taylor approximation to ln(x+1) about 0 for various values of
0 answers
711 views
A new automobile costs $32,000. The value of the same automobile after t years is given by V = 32000(0.8)t. The following steps
0 answers
532 views
integral of ((1+sin(2x))^0.5)/(sin(x)^2)
I tried all kind of substitution, simplification but unable to solve it.Need a hint only
1 answer
466 views
A long, cylindrical conductor of radius R carries a current I as shown in the figure below. The current density J, however, is
0 answers
1,031 views
Let Z be a nonnegative random variable that satisfies E[Z^4]=4. Apply the Markov inequality to the random variable Z^4 to find
2 answers
1,443 views
Approximate the value of the series to within an error of at most 10^−5.
The infinite series from n=1 to infinity
1 answer
1,165 views
Johnsons mother bought 25kg of flour.she put the flour equally in 8 small bags.she kept 3 bags and gave the rest to friends.wat
1 answer
645 views
1) Why is it an excellent idea for anyone, to ALWAYS pay their credit card bill off, at the end of each month
2) Describe what
1 answer
522 views
Find the derivative f'(x)= :
f(x)=∫[2,x] ((1/2)t^2-1)^8 dt
1 answer
332 views
For each kilogram of a person's weight, 2.5 milligrams of a drug is to be given. What dosage should be given to a child who
1 answer
2,680 views
p = 14 − 2q; p = 3
1 answer
261 views
What about this one guys, I tried setting it up like i was shown on the one similar but i keep getting a negative number.
Kelsey
1 answer
505 views
Sophia has 22 coins in her pocket, all of which are nickels and dimes. If the total value of her change is $1.75, how many
3 answers
1,058 views
Cassie rolled two 1-6 cubes 108 times. How many times should she predict the sum of 5?
1 answer
1,103 views
Will a photon of light of wavelength 480 nm excite an electron in the hydrogen atom from the n = 1 level to the n = 2 level?
How
1 answer
898 views
i need help setting up 2 equations.
The sum of the radius,r, times 2 and 3 equals 4 less than the radius,r. The sum of the
2 answers
417 views
Stacy earns $12.50 an hour at her job. She wants to earn at least $390. Write an inequality hat represents all of the possible
1 answer
624 views
Triangle ABC is given where the measure of angle a is 33°, a=15 in., and the height, h, is 9 in. How many triangles can be made
1 answer
664 views
For an organism that has a diploid number of chromosomes of 12, give the number of chromosome/chromatid copies at the end of the
0 answers
656 views
Find two binomials whose sum is 4x^2 - 4x - 15
1 answer
473 views
A typical magnitude of the external magnetic field in a cardiac catheter ablation procedure using remote magnetic navigation is
0 answers
732 views
Find a such that f(x)= ax^2-3x+5 has a maximum value of 15.
I'm stuck because how am I suppose to complete the square? 3/2= 1.5?
2 answers
489 views
I have notes on this from online but they are different from this problem and I don't know how to solve it.
Find the equation of
2 answers
696 views
Calculate the concentration of a solution prepared by adding 15.00 mL of 2.10 X 10^-3 M KMnO4 from a buret into a 50.00 mL
1 answer
564 views
In electrical engineering, a continuous function like f(t)=sin(t), where t is in seconds, is referred to as an analog signal. To
1 answer
2,126 views
Two Children,A and B, fire identical 10g ball bearing from a catapult. The elastic band of each catapult is elastically extended
3 answers
3,614 views
A tablet containing calcium carbonate and fillers with a mass of 1.631 g was dissolved in HCl. After the fillers were filtered
1 answer
762 views
F(x) = -x^2 - x +2
graph function identify the vertex and axis of symmerty. Can some one explain the steps to get answer? I know
2 answers
860 views
You are visiting your friend Fabio’s house. You find that, as a joke, he filled his swimming pool with Kool-Aid, which
1 answer
1,588 views
A group of engineers is building a parabolic satellite dish whose shape will be formed by rotating the curve y=ax^2 about the
1 answer
1,664 views
A lightbulb is installed. With probability 1/3, it burns out immediately when it is first installed. With probability 2/3, it
1 answer
3,594 views
Suppose that X has a PDF of the form
f(x) {1/x^2 if x>= 1 { 0 otherwise For any x>2, the conditional PDF of X, given the event
3 answers
4,378 views
To find the length of the curve defined by y = 5x^3+9x from the point (-3,-162) to the point (1,14), you’d have to compute
1 answer
638 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. x+y = 3, x =
1 answer
1,170 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. x = 1−y^4,
1 answer
878 views
Freddie Sue has a monthly gross income of $2950 and total monthly debt payments of $160. She will have to make a down payment of
0 answers
594 views
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