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Erica

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1. solve sqrt (11-x) = sqrt(x-7)choices are 6,7,8 or9 I think according to my calcs the answer is (9) The range of f(x) =
1. 1 answer
2. 512 views
A body of an unknown temperature was placed in a room that was held at 30°F. After 10 minutes, the body's temperature was 0°F,
1. 2 answers
2. 3,021 views
The number of bacteria in a culture is increasing according to the law of exponential growth. There are 125 bacteria in the
1. 1 answer
2. 9,812 views
Find the inverse of y = ln (x/(x-1))
1. 0 answers
2. 503 views
The amount A(t) of a certain item produced in a factory is given byA(t) = 4000 + 48(t - 3) - 4(t - 3)³ where t is the number of
1. 1 answer
2. 2,318 views
If f is the function defined by f(x) = cube root of (x² + 4x) and g is an antiderivative of f such that g(5)=7, then g(1) is
1. 0 answers
2. 1,226 views
t(sec) | 0 | 2 | 4 | 6 | 8 |____________|_____|_____|_____|____|_____| a(t) (ft/sec²) | 2 | 3 | 4 | 3 | 2 | The table for the
1. 1 answer
2. 991 views
Let f and g be differentiable functions such thatf(1) = 4, g(1) = 3, f '(3) = -5 f '(1) = -4, g '(1) = -3, g '(3) = 2 If h(x) =
1. 0 answers
2. 508 views
Let f(t) = 1/t for t>0. For what value of t is f ' (t) equal to the average rate of change of f on [a,b]?
1. 0 answers
2. 438 views
Let f be the function given by f(x) = tan x and let g be the function given by g(x) = x^2. At what value of x in the interval
1. 1 answer
2. 6,721 views
The volume of the solid formed by revolving the region bounded by the graph of y = (x-3)² and the coordinate axes about the
1. 0 answers
2. 587 views
If, for all real number x, f(x) = g(x) + 5, then on any interval [a, b], what is the area of the region between the graphs of f
1. 1 answer
2. 903 views
Let f(x) be the function defined by f(x) = {x, x≤0x+1, x>0 The value of the integral of x(f(x))dx from -2 to 1 =?
1. 1 answer
2. 1,209 views
If dy/dx = x²y², then d²y/dx² = ?
1. 1 answer
2. 2,523 views
If the integral of (x^2 - 2x + 2)dx from 0 to 6 is approximated by three inscribed rectangles of equal width on the x-axis, then
1. 1 answer
2. 1,135 views
How do you solve ∫sin(3x+4)dx?I got the -cos(3x+4) part, but do you have to integrate the 3x+4 too? Does chain rule apply?
1. 1 answer
2. 1,079 views
If t is measured in hours and f '(t) is measured in knots, then integral from 0 to 2 of f '(t)dt = ?(Note: 1 knot = 1 nautical
1. 0 answers
2. 961 views
If f(x) = e^(sin x), how many zeros does f '(x) have on the closed interval [0, 2π]?
1. 2 answers
2. 4,528 views
A line through the origin rotates around the origin in such a way that the angle, θ, between the line and the positive x-axis
1. 0 answers
2. 788 views
The graph of y = 3x^2 - x^3 has a relative maximum at what point?
1. 1 answer
2. 2,006 views
Find the integral of 2x/(x^2 + 6x + 13)dx
1. 1 answer
2. 641 views
Verify the differentiation formula.d/dx[arcsin u] = u'/(sq. rt. (1-u^2))
1. 0 answers
2. 497 views
Find the derivative of the function.y = x arccos x - (sq. rt. (1 - x^2))
1. 0 answers
2. 355 views
Find the derivative of the function.h(x) = x^2 arctan x
1. 1 answer
2. 476 views
Find the derivative of the function.f(x) = arctan (x/a)
1. 1 answer
2. 635 views
Verify each identity.a) arcsin(-x) = -arcsin x; abs. val. (x) is less than or equal to 1. b) arccos(-x) = pi - arccos x; abs.
1. 0 answers
2. 428 views
Solve the equation for x.arcsin(sq. rt.(2x)) = arccos(sq. rt(x))
1. 0 answers
2. 377 views
Find the area of the largest rectangle that can be inscribed under the curve y = e^(-x^2) in the first and second quadrants.
1. 0 answers
2. 825 views
You need 50 pounds of two commodities costing $1.25 and$1.60 per pound.a) Verify that the total cost is y=1.25x + 1.60(50 - x),
1. 1 answer
2. 927 views
Find the inverse of f(x) = (x+2)/x
1. 1 answer
2. 402 views
Use the derivative to determine whether the function is strictly monotonic on its entire domain and therefore has an inverse
1. 1 answer
2. 1,240 views
Locate any relative extrema and inflection points.y = (ln x)/x
1. 0 answers
2. 517 views
Use implicit differentiation to find dy/dx.ln xy + 5x = 30
1. 1 answer
2. 1,213 views
What force is required to accelerate an object having a mass of 3 kg at 5 m/s2?
1. 3 answers
2. 2,924 views
Independent samples of n1 = 400 and n2= 400 observations were selected from binomial populations 1 and 2, and x1 = 100 and x2 =
1. 0 answers
2. 593 views
A group of 56 randomly selected students have a mean score of 30.8 and astandard deviation of ó = 4.5 on a placement test. Find
1. 1 answer
2. 1,119 views
A group of 56 randomly selected students have a mean score of 30.8 and astandard deviation of 4.5 on a placement test. Find a
1. 0 answers
2. 671 views
If a confidence interval for the mean is 24.8 < ì < 29.6. What is the margin of error?
1. 0 answers
2. 380 views
I have to find the function rule that goes with this table...X Y 2 8 4 18 7 33 9 43 12 57 I've been trying to figure it out for
1. 0 answers
2. 506 views
The total cross-sectional area of the load-bearing calcified portion of the two forearm bones (radius and ulna) is approximately
1. 0 answers
2. 585 views
A sample of blood is placed in a centrifuge of radius 20.0 cm. The mass of a red blood cell is 3.0 10-16 kg, and the magnitude
1. 2 answers
2. 1,122 views
A 512 kg satellite is in a circular orbit about the Earth at a height above the Earth equal to the Earth's mean radius.(a) Find
1. 1 answer
2. 926 views
graph the inequality on a plane3x+4y is less then or equal to 12
1. 1 answer
2. 400 views
graph the inequality on a plane3x+4y is less then or equal to 12
1. 1 answer
2. 522 views
A bag of sugar weighs 4.00 lb on Earth. What would it weigh in newtons on the Moon, where the free-fall acceleration is
1. 2 answers
2. 3,999 views
The leg and cast in the figure below weigh 280 N, with the center of mass as indicated by the blue arrow in the diagram. The
1. 0 answers
2. 920 views
solve by elimination method 5x+2y=-13, 7x-3y=17
1. 1 answer
2. 1,072 views
If today is Tuesday, what integer stands for last Sunday?
1. 6 answers
2. 847 views
How do you find a formula for f(x) and g(x) if h(x)=f[g(x)] h(x)=(2x^3-5)^4
1. 1 answer
2. 289 views
What is a generalization for this set of polygons: square, hexagon and a pentagon
1. 1 answer
2. 1,282 views
A stationary billiard ball, mass 0.17 kg, is struck by an identical ball moving at 2.7 m/s. After the collision, the second ball
1. 3 answers
2. 2,912 views
what is n/15=120
1. 1 answer
2. 316 views
What task component distinguishes the Wechsler Scales from the SBIS?
1. 0 answers
2. 1,080 views
The crystal structure of lithium sulfide (Li2S) is pictured here. The length of the unit cell is 5.88 x 10^2. For this
1. 1 answer
2. 1,104 views
The crystal structure of lithium sulfide (Li2S) is pictured here. The length of the unit cell is 5.88 x 10^2. For this
1. 0 answers
2. 928 views
Four charges on a rectangle that is 6 cm by 3 cm. All but one of the corners has a positive charge. The magnitudes of the
1. 1 answer
2. 707 views
This is a homework assignment for my Psychology course on Memory and learning.Find a Movie/video clip (1-3 mins)that demonstrate
1. 2 answers
2. 691 views
This is one of my english homework. Can someone have a look at it and give me some suqqestions. Thank you.The Summary of English
1. 1 answer
2. 1,203 views
Indicate the gendr of the bracketed words. I tired them but I am not sure am I right or not. Please look over it and give me
1. 4 answers
2. 508 views
I have did the corrections for my english homework I posted a few days ago. Can someone check it over again and give me some
1. 2 answers
2. 658 views
This is my english assignment, hope someone will look over it for me!! ThanksIdentify the phrase in the sentence below, and name
1. 2 answers
2. 666 views
Assume that men constitute 49% of population in a country. Assumealso that among men there are 5% of color-blinded. Find the
1. 1 answer
2. 434 views
find pH of 0.050 M HCLO4 plus 0.050 M HBr> You must consider activities>
1. 1 answer
2. 963 views
Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in the same time it takes to bike 63 km with the wind. What
1. 4 answers
2. 636 views
Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in the same time it takes to bike 63 km with the wind. What
1. 4 answers
2. 1,118 views
How do you write a quadratic equation in standard form for a given set of zeros?
1. 2 answers
2. 3,814 views
How would I find the a for the equation y= a(x-h)^2+k. I'm looking at a graph, and I can solve for everything except for a. What
1. 4 answers
2. 440 views
What were the key arguments for and against U.S. imperialism during the Spanish American War??
1. 1 answer
2. 873 views
Why does covering and refrigerating food help reduce spoilage from mould?
1. 1 answer
2. 1,120 views
x^2+4x^2+4 = (x + 2 i) (x - 2 i) Wouldn't you need a value for x? Or do u just have to make an expression? An expression for
1. 0 answers
2. 416 views
x^2+4
1. 0 answers
2. 278 views
Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them!Problems: 2.Your quiz grades are 19, 17, 20, and
1. 0 answers
2. 943 views
Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them!Problems: 2.Your quiz grades are 19, 17, 20, and
1. 0 answers
2. 855 views
Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them!Problems: 2.Your quiz grades are 19, 17, 20, and
1. 0 answers
2. 584 views
Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them!Problems: 2.Your quiz grades are 19, 17, 20, and
1. 0 answers
2. 473 views
Directions are that i have to solve the equation and graph it using words.I have to include whether itis a solid or dotted line
1. 0 answers
2. 593 views
Directions say that I have to solve and graph the equation using words.I have to include whether the lines are dotted or solid,
1. 0 answers
2. 583 views
How do clouds form, and where in canada would you expect to see certain types of clouds. What is the difference between clouds
1. 1 answer
2. 756 views
1. How do meteorologists forecast El Nino and La Nina?2. Effects of El Nino and La Nina with regards to ocean currents and air
1. 0 answers
2. 755 views
Why is it impossible to have an Arctic Circumpolar Current?http://www.whoi.edu/science/PO/arcticgroup/projects/proshjohnson-two-
1. 0 answers
2. 597 views
How do I do a Bibliography for an interview?Thank you for using the Jiskha Homework Help Forum. Here are some sites on how to
1. 0 answers
2. 720 views
Can someone tell name 6 effects of ocean currents?Thanks Since this is not my area of expertise, I searched Google under the key
1. 0 answers
2. 601 views
What is the average ion concentration in a 7.9 mL saturated solution of calcium hydroxide containing calcium chloride (CaCl2)?
1. 0 answers
2. 587 views
waht is the impact of a stock repurchase on a companys debt ratio? Does this suggest another use for excess cash?The <b>correct
1. 1 answer
2. 796 views
What are the sectores of the economy?Since this is not my area of expertise, I searched Google under the key words "<I>economy
1. 0 answers
2. 777 views
Spent steam from an electric generating plant leaves the turbines at 120.0 degrees Celsius and is cooled to 90.0 degrees
1. 1 answer
2. 1,677 views
A 50.0 g silver spoon at 20.0 degrees Celsius is placed in a cup of coffee at 90.0 degrees C. How much heat does the spoon
1. 2 answers
2. 8,989 views
lead is a soft, dense metal with a specific heat of 0.028 kcal/kg degrees C, a melting point of 328.0 degrees C and a heat of
1. 1 answer
2. 1,156 views
Which provides more cooling for a styrofoam cooler, one with 10 lbs of ice at 0 degrees C or one with 10 lbs of ice water at 0
1. 1 answer
2. 1,916 views
a 1.0 metal head of a geology hammer strikes a solid rock with a velocity of 5.0 m/s. Assuming all the energy is retained by the
1. 1 answer
2. 1,367 views
What international moral code, if any, is being violated by the Bank?What bank? What did "the Bank" do that might have violated
1. 0 answers
2. 457 views
solve each system of equations using matricesx+2y-3z=0 2x-4y=z=-7 -2x+2y-3z=4 I don't see how it is possible to even attempt a
1. 0 answers
2. 1,124 views
find real numbers a,b,c so that the graph of the function y=ax^2+bx+c contains the points (-11,4), (2,3) , and (0,1)Write three
1. 0 answers
2. 845 views
Solve eacy system of inequalities. If the system has no solution, say that it is inconsistant.x -y -z = 1 2x +3y +z = 2 3x +2y =
1. 0 answers
2. 465 views
The logistic growth model p(t)=0.90/1+3.5e^-0.339t relates the proportion of new personal computers sold @ Best Buy that have
1. 0 answers
2. 1,193 views
A culture of bacteria obeys the law of unlimited growth. If 500 bacteria are present initially and there are 800 after 1 hour,
1. 1 answer
2. 853 views
The formula D= 5e ^-0.4h can be used to find the number of milligrams D of a certain drug that is in a patient's bloodstream h
1. 1 answer
2. 7,460 views
The pH of a chemical solution is given by the formula pH = -log10 [H+] where [H+] is the concentration of hydrogen ions in moles
1. 1 answer
2. 1,843 views
The period T (in seconds) of a simple pendulum is a function of its length l (in feet), given by T(l) = 2pi sq root of l/g,
1. 0 answers
2. 1,383 views
The function f(x)= x^4 is not one-to-one. Find a suitable restriction on the domain of f so that the new function that results
1. 0 answers
2. 716 views

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