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Tutors Answer Your Questions about Numeric Fractions (FREE)
Question 209316: Suppose there are 10 items on a true-false quiz. The person taking the test does not read the questions; he just answers the questions randomly. What is the probability of his guessing all answers correctly?
How should I find out how many answers he answered correctly??
Click here to see answer by Theo(691)   |
Question 209316: Suppose there are 10 items on a true-false quiz. The person taking the test does not read the questions; he just answers the questions randomly. What is the probability of his guessing all answers correctly?
How should I find out how many answers he answered correctly??
Click here to see answer by MathTherapy(337)  |
Question 209044: a professional cyclist is training for the Tour de France . what was his average speed in miles per hour if he rode the 120 miles from Laval to Blois in 4.7 hours ? u8se the formula d = rt , and round your answer to the nearest tenth .
a) 25.5 mph .
b) 115.3 mph .
c) 70.4 mph .
d) 564.0 mph .
Click here to see answer by checkley77(7172) |
Question 212054: we need to compare the postive rational numbers using the symbols: >, <, =. and show out work. my daughter math teacher does not send home a book please help::: 1. 2.5____24/11
2. 1/3 ____ 32.5%
3. 1.4 ______ 25/23
Click here to see answer by stanbon(26367) |
Question 212099This question is from textbook Beginning Algebra
: Ahmad Wishes to purchase mulch to cover his garden. The garden measures 63/8 ft by 81/8 ft. He wants the mulch to be 1/3 ft deep. How much mulch should Ahamad order if he must order a whole number of cubic feet?
My try: I think th ethree frations should be multiplied: (63/8)(81/8)(1/3)= 5103/192This question is from textbook Beginning Algebra
Click here to see answer by nerdybill(2453)  |
Question 212197: Manny Coynes has $13.50 in change. 2/9 of this amount is in half-dollars. 4/7 of the ramainder is in quaters, and the rest is made up of the same number of dimes as nickels. How many coins does Manny have?
Click here to see answer by RAY100(1637) |
Question 213782: How do I multiply 4 1/5 x 10/21 x 9/20?
It has been 31 years since I have taken math and this question has lost me. I have looked over my examples that I have and I just do not understand. I would appreciate your help, thanks
Click here to see answer by tutor_paul(424)  |
Question 207612: Roots
A.)Find each root
- sq root 25
B) Quotient Rule for Radicals
Simplify each radical. All variables represent positive real numbers.
^3sq root -27y^36 over 1000
C) Rational Exponents
Evaluate each expression.
(-16)^ one fourth
D)Simplify each expression. Write your answers with positive exponents. Assume that all variables represent positive real numbers.
(-27x^9)^ one third
E)Simplify each expression. Write your answers with positive exponents. Assume that all variables represent positive real numbers.
(-27x^9)^ one third
F)Adding and Subtracting Radicals
All variables in the following exercises represent positive numbers.
Simplify the sums and differences. Give exact answers.
sq root 5 - 3 sq root 5
G)Simplify each expression.
(3 - 2sq root 7)(3 + 2sq root 7)
H)Simplifying Radicals
Write each radical expression in simplified radical form.
sq root 2 over sq root 18
I)Simplify
sq root 6 over sq root 7 . sq root 14 over sq root 3
J)The Even-Root Property
Find all real solutions to each equation.
A^2 – 40 = 0
K)Equations Involving Radicals
Solve each equation and check for extraneous solutions.
3 sq root w + 1 = 6
L)Find all real or imaginary solutions to each equation. Use the method of your choice.
W^2 = -225
M)Find all real or imaginary solutions to each equation. Use the method of your choice.
sq root 7x + 29 = x + 3
N)Solve each equation by using the quadratic formula.
X^2 + 4x + 3 = 0
O)Number of Solutions
Find b^2 – 4ac and the number of real solutions to each equation
-3x^2 + 7x = 0
P)Equations Quadratic in form
X^2 + x + sq root x^2 + x - 2 = 0
Q)Find all real and imaginary solutions to each equation.
B^4 + 13b^2 + 36 = 0
Click here to see answer by solver91311(5106)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340
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