# total normal stresses of 110 and 40 kpa are applied to two planes at right angles in an element of soil. the shear stress acting on those palnes is 20 kpa. what must be the value of the pore pressure

33,844 results, page 73
1. ## Geomatry

In triangle ABC, angle Bis five less than twice angle A and angle Cis sixty less than angle B. What is the measurment of all of the triangles angles?

asked by Angelique on November 10, 2011
2. ## Physics

The maximum and minimum magnitudes of the resultant of two given vectors are 17N and 7N respectively. If two vectors are at right angles to each other, then find the magnitude of their resultant?

asked by ABC on June 14, 2017
3. ## math

the sum of measures of the angles in a nonagon is A)1260 degree B)1160 degree C)1060 degree D)960 degree

asked by makeeda on January 13, 2010
4. ## Just Help- Algebra

What is the Sum of the interior angles for a pentagon? 900 degrees 540 degrees 720 degrees 108 degrees

asked by lele on February 2, 2018
5. ## Math-Trigonometry

The angles of elevation to the top of a mountain are measured from beacons A(22°) and B(40°) at sea. If the beacons are 125m apart, how high is the mountain?

asked by Lucifer Mato on August 26, 2015
6. ## math

In an Isosceles triangle, one angle is 16 degrees more than twice the measure of one of the equal angles. Find the measure od eah angle.

asked by Valery on April 10, 2011

A quadrilateral has interior angles with degree measures of 63, 4s, 5s and 2s. What is the angle measure, in degrees, of the largest angle of the quadrilateral?

asked by Venus on September 10, 2013
8. ## Physics

Vector C has a magnitude 25.8 m and is in the direction of the negative y-axis. Vectors A and B are at angles α = 41.9° and β = 25.2° up from the x-axis respectively. If the vector sum A B C = 0, what are the magnitudes of A and B?

asked by Mark on June 2, 2015
9. ## Math

Jamie has a pentagon that she thinks has two pairs of congruent angles and two pairs of congruent sides. How can she check this without using any tools?

asked by Mia on March 19, 2012
10. ## pre algebra

the measures of the angles of (triangle) RST are in the ratio 2:3:5. find the measures of each, and classify the triangle as acute, right, obtuse.

asked by lavena on June 16, 2010
11. ## Geometry

Suppose that a given quadrilateral is a kite with no right angles. Which of the following is possible? a. the quadrilateral is a trapezoid b. the quadrilateral has congruent diagonals c. the quadrilateral is a rhombus d. none of the above I think it is b.

asked by Rmz on January 27, 2010
12. ## math

A right triangle has a hypotenuse of length 3.00 m, and one of its angles is 30.0°. What are the lengths of (a) the side opposite the 30.0° angle and (b) the side adjacent to the 30.0° angle?

asked by steven on July 19, 2009
13. ## math

The measures of the three angles of a triangle are given. Find the value of x and state whether the triangle is acute, obtuse, or right. x + 10, x − 20, x + 25 I got x is 55 and it is an acute angle. Is that correct?

asked by Danny on October 10, 2016
14. ## analytical geometry

if in a tetrahedron the sums of the squares of opposite sides are equal,show that its pairs of opposite sides are right angles

asked by manjula on January 15, 2013
15. ## Math

Jamie has a pentagon that she thinks has two pairs of congruent angles and two pairs of congruent sides. How can she check this without using any tools?

asked by Mia on March 19, 2012
16. ## Geometry

What are the applications of undefined terms and angles in the game of basketball? Give four (4) specific applications and give your justifications.

asked by Annabeth on August 20, 2014
17. ## physics

Vector C has a magnitude 25.8 m and is in the direction of the negative y axis. Vectors A and B are at angles α = 41.9° and β = 27.2° up from the x axis respectively. If the vector sum A B C = 0, what are the magnitudes of A and B?

asked by helpp on June 1, 2013
18. ## Trig

Find the coterminal angles: one positive one negative angle. 55° and (9(3.14)/5) answer degrees in radians and radians in degrees

asked by Anonymous on June 4, 2014
19. ## Angles,Lines and Triangles

The sum of two angles of a triangle is 116 degree and their differences is 24 degree.Find the measure of each angle of the triangle.

asked by Harsh on June 17, 2014
20. ## geometry

WHAT IS THE BASE LENGTH OF AN ISOSCELES TRIANGLE IF YOU KNOW THE EQUAL SIDES HAVE A VALUE OF 5 AND THE ANGLE BETWEEN THEM IS 45 DEGREES AND THE BASE ANGLES ARE 67.5 DEGREES?

asked by Anonymous on November 3, 2010

Angles x and y are located in the first quadrant such that sinx=3/5 and cosy=5/13. a) Determine an exact value for cosx. b) Determine an exact value for siny.

asked by Anonymous on November 1, 2009
22. ## Geometry

the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

asked by HELP!!! URGENT on December 2, 2011
23. ## Geometry

the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

asked by HELP!!! URGENT on December 2, 2011
24. ## physics

A car travel a distance of 8 km frome P to Q then moves 6 km at right angles to PQ .Find its travel distance and displacement Solution

25. ## Physics

Vector C has a magnitude 25.8 m and is in the direction of the negative y axis. Vectors A and B are at angles á = 41.9° and â = 26.7° up from the x axis respectively. If the vector sum A B C = 0, what are the magnitudes of A and B?

asked by Greg on September 4, 2013
26. ## math

The measure of the supplement of an angle is 20 degrees more than three times the measure of the original angle. Find the measures of the angles.

asked by Bianca on August 28, 2010
27. ## physics

Vector C has a magnitude 25.8 m and is in the direction of the negative y axis. Vectors A and B are at angles α = 41.9° and β = 27.2° up from the x axis respectively. If the vector sum A B C = 0, what are the magnitudes of A and B?

asked by helpp on June 1, 2013
28. ## geomentry

finding the angles of triangles What triangles?

asked by jason on March 29, 2007
29. ## Algebra

A box with no top is to be constructed from a piece of cardboard whose length measures 6 inch more than its width. The box is to be formed by cutting squares that measure 2 inches on each side from the four corners an then folding up the sides. If the

asked by T H on April 5, 2013
30. ## geometry

Can you prove ABCD is a parallelogram based on the given information? Explain. Given: x = 5, y = 4 Prove: ABCD is a parallelogram. A. The figure is a square. To be a parallelogram, it would have to have pairs of opposite congruent sides, not just congruent

asked by Kate on March 6, 2011
31. ## Economics

The market for fertilizer is perfectly competitive. Firms in the market are producing output, but they are currently making economic losses. a. How does the price of fertilizer compare to the average total cost, the average variable cost, and the marginal

asked by Sarah on November 25, 2006
32. ## Math/statistics

Thirty five percent of adult americans are regular voters. A random sample of 250 adults in a medium size college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence and

asked by Tessa on November 23, 2012
33. ## statistics

Can people really identify their favorite brand of cola? At a= .05, is the correctness of the prediction different for the two types of cola drinkers? Since it is 2 x 2 table, try also a two-tailes two-sample z test for n1 = n^2 and verify that z2 is the

asked by Gayla on June 23, 2008
34. ## math

A woman drove to work at an average speed of 40 miles per hour and returned along the same route at 30 miles per hour. If her total traveling time was 1 hour, what was the total number of miles in the round trip?

asked by Lisa on March 19, 2008
35. ## Calculus

Find the equation of the tangent plane and symmetric equation for the normal line to the given surface at P: xy^2 + zy^2 + 4y -xz^2 = 18 P(-2,0,3)

asked by Kim on June 2, 2013
36. ## physical science

At the bottom of a well one quarter of radius of the earth deep your weight compare to your normal weight would be

asked by tam on March 1, 2011
37. ## algebra

19cm^3 of a normal specimen of human blood contains 1.2 of hemoglobin. How many grams does 17cm^3 of the same blood contain?

asked by rr on June 1, 2012
38. ## algebra

10cm2 of a normal specimen of human blood contains 1.2g og hemoglobin how many grams does 47cm3 of the same blood contain

asked by karon on December 13, 2011
39. ## Calculus

Find the equation of the tangent plane and symmetric equation for the normal line to the given surface at P: xy^2 + zy^2 + 4y -xz^2 = 18 P(-2,0,3)

asked by Elyse on June 2, 2013
40. ## math

10cm^3 of a normal specimen of human blood contains 1.2g of hemoglobin. How many grams does 47cm^3 of the same blood contain?

asked by pam on April 2, 2013

The sampling distribution of x bar must be a normal distribution with a mean 0 and standard deviation 1. true or false

asked by CS on July 11, 2011
42. ## Statistics

I am having trouble understanding standard normal distribution such as if p(z

asked by Jacob on June 17, 2010
43. ## Statistics

I am having trouble understanding standard normal distribution such as if p(z

asked by Jacob on June 17, 2010
44. ## stats

For a normal distribution where mx= 80 and sx= 10, the distribution model fits well to test scores of N = 20000 students.

asked by sandra on July 10, 2011
45. ## Chemistry

Please help me explain How a nuclear reaction differs from a normal chemical reaction and give examples.

asked by Elie on August 6, 2012
46. ## Statistics

I am having trouble understanding standard normal distribution such as if p(z

asked by Jacob on June 16, 2010
47. ## math

10cm^3 of a normal specimen of human blood contains 1.2g of hemoglobin. How many grams does 22cm^3 of the same blood contain?

asked by pam on April 26, 2013
48. ## algebra

10cm2 of a normal specimen of human blood contains 1.2g of hemoglobin how many grams does 47cm3 of the same blood contain

asked by karon on December 15, 2011
49. ## Calc

Find the coordinates of the point on the curve xy=6 in quadrant I where the normal to the curve passes through the origin.

asked by Anon on February 16, 2014
50. ## Math

Show that the tangent to the curve 25x^5+5x^4-45x^3-5x^2+2x+6y-24=0 at the point (-1,1) is also a normal at two points of the curve.

asked by Avik on February 3, 2013
51. ## Word Problem

As a sample size approaches infinity, how does the student’s t distribution compare to the normal z distribution?

asked by Marilyn on September 6, 2008
52. ## logic

Convert the following formula to conjunctive normal form (clause form). a) a ≡ (b ≡ c) is the answer (a כ(( b כ c) ^ (c כ b))) ^ ((( b כ c) ^ (c כ b)) כ a) unsure thanks

asked by melvin on January 18, 2016
53. ## prepositional calculus

Convert the following formula to conjunctive normal form (clause form). a) a ≡ (b ≡ c) is the answer (a כ(( b כ c) ^ (c כ b))) ^ ((( b כ c) ^ (c כ b)) כ a) unsure thanks

asked by melvin on January 18, 2016
54. ## Calculus

Verify if correct or not please =) What is the slope of the normal to y= (x^2-1)/(x+5) at (1,0) a) -3 b) -1/2 c) -1/3 d) 1/3 Answer is A, -3. ---------------------------------------- What is the y-intercept of the line that is tangent to f(x)=4/(3x+1) at

asked by Jake on February 21, 2012
55. ## statistics

Suppose test scores follow a normal distribution with ì= 80 and ó = 5. Calculate the z-score for a score of 90.

asked by Deborah on August 15, 2013
56. ## calculus

what normal annual interst rate has an effective annual yield of 7.8% under continuous compounding?

asked by annonymous on September 19, 2010
57. ## Integration

asked by Ash on November 30, 2006
58. ## science

the cake is sititing on table with a gravitation force of 57.6 and a normal force of 57.6 what is the sum of all forces

asked by Anonymous on May 20, 2015
59. ## Chemistry

Normal saline solution is 0.91%w/v Calculate thge concentration of this solution in grams per litre????

asked by Korina on December 13, 2010
60. ## Calculus

If f(2)=3 and f'(2)=5, find an equation of a. The tangent line b. The normal line to the graph of y=f(x) at the point where x=2 So I plotted (2,3) and (2,5)...but that's not getting anywhere... Thanks

asked by Anonymous on February 24, 2010
61. ## Statistics

A random sample is obtained from a normal population with a mean that equals 80 and a standard deviation that equals 8

asked by Jim on March 12, 2011
62. ## Statistics - Standardizing

I still feel a bit confused, but let's say after all the calculations, I get up to this : P(Z = 3.36) before checking the table? Thank you.

asked by Cecile on January 17, 2012
63. ## Chemistry

At normal temperature and pressure, air has a density of 0.001184 g/mL. What is the mass of air in a room that is 3.93 m by 2.28 m by 2.25 m?

asked by Melanie on August 29, 2016
64. ## statistics

Consider a normal distribution with mean 20 and standard deviation 3. What is the probability a value selected at random from this distribution is greater than 20?

asked by erin on May 12, 2013
65. ## Physics

A vase is resting on a tabletop. If the mass of the vase is 0.5 kg calculate the normal force acting on it.

asked by Katelyn on February 15, 2011
66. ## maths

number of films seen by a group of people during the past year No of films seen 0 1 2 3 4 5 6 7 8 No of people 23 12 9 6 3 4 2 0 1 What percentage of people had seen more than 4 films during the year? would it be 10/60 = 0.1666 x 100 = 16.6% is this

asked by sarah on June 8, 2007
67. ## Math

8) A consumer groups tries to determine the most expensive items in a convenience store. Four items are purchased in the convenience store and compared to the average price in stores in the area. Assume tat the price distribution is normal. Use your

asked by Kay on November 18, 2012
68. ## Statistics

Males make a mean of 531 on math SAT with standard deviation of 114. Minimum 600 score. what's the % of males that don't satisfy this requirement? Pregnancies usually distributed mean of 268 days and standard distribution 15 days. Baby born three week

asked by Sue on December 5, 2006
69. ## Physics

Sorry if it is alot of questions 1. A crate falls from an airplane flying horizontally at an altitude of 2000 m. Neglecting air resistance, about how long will the crate take to strike the ground? a. 10 seconds b. 20 seconds c. 400 seconds d. 100 seconds

asked by Alex Graham on January 26, 2017
70. ## math

The figure shows 2 similar squares, A and B which overlap each other. The ratio of the shaded area to the total area of square B is 3:5. The ratio of the shaded area to the total area of square A is 9:17. What is the ratio of the shaded area to the total

asked by Lenovo on July 23, 2014
71. ## statistics

For a normal distribution with µ = 200 and ó = 50, what X values form the boundaries for the middle 60% of the distribution?

asked by jau on February 28, 2012
72. ## maths a

us e the formula z=x-u/SD to determine the z score for a score of 34.5 a normal distribution if the mean is 46.5 and the standard deviation is 8.7

asked by jay on September 11, 2014
73. ## lıfe scıence

Why ıs ıt healthıer to use skım mılk,ınstead of normal mılk,wıth your cereal?

asked by zımkhıtha on June 5, 2014
74. ## mathes

find an equation of the normal line to the curve y=radx-3 that is parallel to the line 6x+3y-4=0

asked by Anonymous on December 16, 2013
75. ## maths

Deformity 9y ^ 2 = x ^ 3, at the point of deformity where the normal axis intersects similar builds.

asked by yk on September 29, 2016
76. ## Statistics 250

In a normal distribution, what z-score value separates the highest 90% of the scores from the rest of the distribution? a)z = -1.28 b)z = 1.28 c)z = -0.13 d)z = 0.13

asked by Alica on March 18, 2010
77. ## Math

Suppose a normal distribution has a mean of 20 and a standard deviation of 4. What is the z-score value 0.52. Its standard deviations is less than the mean? -0.13 0.13 help please

asked by Regina on October 24, 2018
78. ## Mathematics

The equation of a circle is given by D: x^2 + y^2 - 2x - 4y - 20 = 0 Use implicit differentiation to find the equation of the normal D at the point S(5, -1)

asked by James on February 25, 2016
79. ## Statistics

Under what circumstances does the sampling distribution of the proportion approximately follow the normal distribution?

asked by Dan on June 3, 2011
80. ## chemistry 101

How many grams of NaCl are dissolved in 250 grams of normal saline solution

asked by mm on October 1, 2010
81. ## calculus

Find equations of the tangent line and normal line to the curve at the given point. y = x^4 + 2e^x, (0,2)

asked by Vishnu on October 14, 2008
82. ## Science

Specifically, where is the fault plane located at a normal fault? near the top? near the bottom?

asked by Angie on March 10, 2009
83. ## Chemistry

Normal saline solution is 0.91%w/v. Calculate the concentration of this solution in milligrams per litre (mg/L)

asked by Korina on December 14, 2010
84. ## math

A normal distribution has a mean of 44 and a standard deviation of 4. What is the probability that a value drawn from the distribution lies between 36 and 48? A) 0.18 B) 0.32 C) 0.82 D) 0.91

asked by Mark on September 14, 2015
85. ## English expression

* He doesn't like baths. How do you pronounce 'baths'? Do we have to omit the th sound in normal speech?

asked by John on April 3, 2008
86. ## Chemistry

Ln(P2/p1)=ln(-delta Hvap/R)•(1/T1-1/t2) I have ammonia at normal boil with a temp at 39.2C find the Hvap

asked by Anonymous on January 21, 2016
87. ## stats

A normal distribution has a mean of µ = 28 with σ = 5. What is the minimum raw score needed to be in the top 25% of the distribution?

asked by Komal on October 23, 2012
88. ## algebra 2

10 cm^3 of normal specimen of human blood contain 1.2g of hemoglobin. How many grams does 40cm^3 of same blood contain? Thank you.

asked by Esther on March 15, 2011
89. ## algebra

A normal distribution has a mean of 44 and a standard deviation of 4. What is the probability that a value drawn from the distribution lies between 36 and 48? A) 0.18 B) 0.32 C) 0.82 D) 0.91

asked by Tyrice on September 15, 2015
90. ## calculas

Find the equations for the tangent line and normal line to the curve for f(x)=(x^4)+(2e^x) at the point (0,2)?

asked by john on September 28, 2010
91. ## algebra

A normal distribution has a mean of 98 and a standard deviation of 6. What is the probability that a randomly selected x-value from the distribution is at least 80?

asked by jenny on May 23, 2012
92. ## English

1. How do you pronounce 'helpful'? It's a little difficult to pronounce, so we can delete the 'p' sound in normal pronunciation. Is that right?

asked by rfvv on November 14, 2016
93. ## Math

A normal distribution has a mean of 20 and a standard deviation of 3.What is the probability that a randomly selected x-value from the distribution is: A)at least 14? B)at most 26? C)Between 8 and 23?

asked by Sam on December 13, 2009
94. ## Grammar

Proofreading.. PROCEDURE: The patient was prepped and draped in the usual sterile fashion. Examination of the vocal chords in a sitting position revealed a poly-poid growth in front of the left false vocal cord with erythematous base and yellow colored

asked by Jenny on April 17, 2012
95. ## Accounting

how can you determine what side is a debit and what side is a credit A debit is an expense that is paid. A credit is income. The following rules are applied to decide debit or credit side. 1.Debit what comes in and credit what goes out 2.Debit the receiver

asked by Joyce on June 10, 2007
96. ## statistics

In prior investigations made by a local Gas and Electric Company, 65% of homeowners prefer to heat with gas instead of electricity. In a recent study of 200 homeowners 60% prefer heating with gas. In a two tailed test at a .05 level of significance can we

asked by Nikki on April 26, 2011
97. ## Physics

Two blocks rest on slopes of unequal angles, connected by a rope passing over a pulley. If the blocks equal masses, will they remain at rest? Why? Neglect friction.

asked by Anthony on October 14, 2012
98. ## math

Which of the following is a disjunction? Angela is forty-three. Lisa will run a marathon and Lisa will compete in a triathlon. Paul is at school or Paul is at home. A spuare has four sides and four angles.

asked by Troy on September 28, 2010
99. ## trigonometry

draw a triangle that maps their route. label the lengths and angles. is hjb a right triangle? no. draw a height, h, from H to point X on bj. what kind of triangles are HXJ and HXB?

asked by bonnie on November 27, 2015
100. ## Algebra II

In triangle ABC, C is a right angle. Side c=9 and side a=5. What are the measures of the remaining sides and angles, in degrees, of the triangle? Round answers to the nearest hundredth if needed.

asked by Denise on May 19, 2016