# Posts by dan

Total # Posts: 1,225

1. ### western illinois

102 = 3.14 x 42.25 x h solve for h
2. ### Calculus

The volume of the 3-dimensional structure formed by rotating the circle x^2 + (y-5)^2 = 1 around the x-axis can be expressed as V = a\pi^2. What is the value of a?
3. ### Physics

Every once in a while a bird will get hit by a baseball during a baseball game. The longest home runs in baseball land about 500 feet (which is 152.4 meters) from home plate. If these balls leave the bat at a 45 degree angle to maximize their distance, what is the minimum safe...
4. ### Trigonometry

ABC is a right triangle with AB = 2, BC = 3\sqrt{5}, AC = 7 and \angle ABC = 90^\circ. If \cos \angle BAC = \frac{a}{b}, where a and b are coprime positive integers, what is the value of a + b?
5. ### Geometry

Determine the number of subsets of A=\{1, 2, \ldots, 10\} whose sum of elements are greater than or equal to 28 .
6. ### Geometry

ABC is an acute triangle with \angle BCA = 35 ^\circ. Denote the circumcenter of ABC as O and the orthocenter of ABC as H. If AO=AH, what is the value of \angle ABC (in degrees)?
7. ### Geometry

ABC is an isosceles triangle where AB = AC and BC = 60. D is a point on BC such that the perpendicular distance from D to AB and AC is 16 and 32, respectively. What is the length of AB?
8. ### physics

A cargo plane is moving with a horizontal velocity of vx = +225 m/s at a height of y = 920 m above level ground as shown in the figure below when it releases a package. Ignoring air resistance, how much time will it take the package to reach the ground? (Express your answer to...
9. ### Algerbra

8x+7=6 (subtract the 7 from left side) 8x=-1 (divide the 8 on both sibes) x= (-1/8)

D.
11. ### physics

YOU HAVE TO CHECK If Alice now applies QFT2n and measure, she will still get k with probability 99%. AND If she does as in the previous option, she will get k with probability 99%.

68. ### Finance

Seven years ago a semi-annual coupon bond with a 10% coupon rate, \$1,000 face value and 15 years to maturity was issued by Corn Inc.. Teddy bought this bond two years ago when the market interest rate was 12%. And now the market interest rate is 5%. If teddy sells the bond now...
69. ### math URGENT!!!!!!!!!!!!

a 12x12-inch square is divided into n^2 congruent squares by equally spaced lines parallel to its sides. circles are inscribed in each of the squares. find the sum of the areas of the circles. answer and please explain step by step how u got the answer!! please!!!!
70. ### com sci

A rational number is the form of a/b, where a and b are integers with b != 0. Develop and test a class for processing rational numbers. The class should have a numerator data member and a denominator data member. It should read an display all rational numbers in the format a/b...
71. ### physical

to strengthen his arm and chest muscles, an 82-kg athlete who is 2.0 m tall is doing push ups. his center of mass is 1.15 m from the bottom of his feet, and the centers of his palms are 30.0cm from the top of his head. find the force that the floor exerts on each of is feet ...
72. ### Physics

Which one of the following stresses would be most likely to cause a bone to fracture? A) tensile stress B) compressive stress C) sheer stress D) bulk stress
73. ### math URGENT!!!!!!!

a rectangular sheet of paper is folded in half, with the crease parallel to the shorter edge. it happens that the ratio of longer side to shorter side remains unchanged. what is this ratio? answer this and explain how u got the answer.. PLEASE??!
74. ### Computer Science

Overview The purpose of the assignment is to develop a basic understanding and skills programming of input/output ports and device polling. The assignment examines hardware polled input from a push button. Assignment 1 The assignment is based on the flashing LED of the MSP430 ...
75. ### math

Alexa and Emma are looking up at their house from the backyard. From alexa's point of view, the top of the house is at an ang;e of elevation of 40 degree. From Emma's point of view, directly closer to the house, it is 60 degree. The house is 15 metres high. How far ...

77. ### math URGENT!!!!

i have a list of 5 different numbers. the sum of 2 of the numbers is 0. the sum of 2 of the numbers is 1. the sum of 2 of the numbers is 2. the sum of 2 of the numbers is 3. the sum of 2 of the numbers is 4.the sum of 2 of the numbers is 5.the sum of 2 of the numbers is 6. the...
78. ### math..reiny..help!!

is that the area of big or small triangle?
79. ### math URGENT!!!!

the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. please answer and show how u did it step by step please!!!! how do i find area of the smaller triangle?
80. ### math URGENT!!

so is that the area of big triangle or small?
81. ### math URGENT!!

how do i find the area of the little triangle? Reiny,
82. ### math URGENT!!

the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. please answer and show how u did it step by step please!!!!
83. ### Trig

From a point 120 feet from the base of a plant building the angle of elevation to the roof line of the building is 38 degrees. The angle of elevation to the top of an antenna is 43 degrees. The antenna is attached to the nearest edge of the roof and the ground is flat. The ...
84. ### mathURGENT!!!!

the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. what is the answer and can u explain how u got it step by step? please...
85. ### math

42 is evenly divisible by both 6 and 7
86. ### math URGENT!!

a rectangular box measures 4 by 5 by 2 meters. what is the length of the longest pole that can fit into the box?
87. ### math

how did u get that?
88. ### math

a rectangular box measures 4 by 5 by 2 meters. what is the length of the longest pole that can fit into the box?
89. ### math

amee, ben, carly, and darrien are friends. darrien has no money. amee gives darrien 1/4 of her money. ben gives darrien 1/5 of his money. carly gives darrien 1/3 of her money. each person gave darrien the same amount. what fraction of the groups total money does darrien have ...

b) 2 7/8 inches
91. ### Science

x = (v+u)(v-u)/2a where x = distance, v = final speed, u = initial speed, a = acceleration substituting known values: 130 = (30)*(-30)/2a a = -900/260 = -3.46 m/s^2 f = ma u(k)*f(normal) = m*a u(k)*m*g = m*a u(k) = a/g u(k) = 3.46/9.8 = 0.35
92. ### Math does anyone know this?

they are parallel....two nonvertical lines are parallel if their slopes are equal and have different y intercepts..

94. ### math - still don't get it

because as long as the number(4) is right after the decimal point it doesnt matter how many 0's are in front of decimal or after the 4. think of it in dollar amount 0.4 is 0dollars and 40 cents. .40 is still 0 dollars and 40 cents thus 0.4=.40 if it were a different number...
95. ### math

its equal to...
96. ### math

can u explain that a little further steve?
97. ### math

describe the picture you would get by graphing the solutions(if there are any!) to the equation (x+y)^2=x^2+y^2
98. ### math

there are 15 boys and 18 girls in fifth grade. Find the ratio of boys to girls in fifth grade.(how do I get the answer) can someone show me how to work the problem

12 ft
100. ### math

is there an equation for this?
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