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Posts by Miles

Total # Posts: 39

Math
Ten students took a math exam. As the teacher evaluated the math exams, she noticed that 8 of the ten students scored above the mean. Is this possible?

Math
Ten students took a math exam. As the teacher evaluated the math exams, she noticed that 8 of the ten students scored above the median. Is this possible? Why I am leaning towards yes it is possible. Kinda confused

Math
There are 50 small balls in a tub. Some balls are white and some are orange. Without being able to see into the tub, each student in a class of 25 is allowed to pick a ball out of the tub at random. The color of the ball is recorded and the ball is put back into the tub. At ...

Math
Allie and Betty want to know how many 3-letter combinations, such as BMW or DDT, are possible. (Letters are allowed to repeat, as in DDT or BOB.) Allie thinks there can be 26+26+26 three-letter combinations, whereas Betty thinks the number is 26*26*26. Which girl, if ether, is...

Math
If you run an average of 3 miles a day over 1 week and an average of 4 miles a day over the next 2 weeks, what is your average daily run distance over the 3-week period?

Math
The mean of 3 numbers is 37. A fourth number, 41 is included in the list. What is the mean of the 4 numbers? Explain your reasoning.

Math
If you run 3 miles everyday for 5 days, how many miles will you need to run on the sixth day in order to have run an average of 4 miles per day over 6 days? Solve this problem in two different ways, and explain your solutions.

Trigonometry
10. Rewrite 2tan 23° / 1 - tan223° as a single function of an angle. I'd appreciate it if someone could help me out with this question! Don't just give me the answer though, please and thank you!

Trigonometry
16. What is the area of the triangle ABC if a=12, b=17, and B=35°? Can anyone tell me the formula for this? Thank you!

Trigonometry
Two hikers are wandering through heavy woods with walkie talkies. The walkie talkies have a range of 0.0568182 miles. From their starting point, they head off at an angle of 109.167° of each other. Hiker 1 walks 0.24 miles per hour, hiker 2 walks 0.17 miles per hour. If ...

riddle
i think the answer is "mtumba".after buying it your friends will refer it as 'new cloth' yet its old

Geometry
Given:-AD is perpendicular to BC -Triangle ABC is isosceles with vertex angle A Prove: Triangle ADB congruent to Triangle ADC (note: it should be solved in 9 steps and I got 7 steps and it being SAS)

math
Mr.ariel and mr. Teddy are planning to paint tha house together.mr.arielthinkin that if.he work alone it would take him 5 hours more than the time mr. Teddy takes to paint the the house .working together they can complete the job in 6hours. How long will mr. Ariel paint the ...

math
Two negative inetegers has a product of 35.The 2nd no. Is three more than twice the 1st no.What are the integers

Math
Each sales associate at an electronics store has a choice of two salary options. $115 per week plus 9.5% commission on the associate's total tax sales or $450 per week with no commission. The average of the total sales amount for each associate last year was $125,000. ...

mixed fractions
if bob ran a race in 2 7/10 minutes and sara ran in 5 3 /10 and it took 9 minuets to run how long did it take dave

Math
The ratio of 7th and 8th graders in a soccer league is 16:24. If there are 200 students in all, how many are 7th graders?

Chemistry
How many joules are needed to change 163.34 g of water at 54.1 °C to steam at 100 °C?

math
1.Glenn bought a car for Php600,000. The yearly depreciation of his car is 10% of its value at the start of the year. What is its value after 4 years? A. Php437,400 B. Php438,000 C. Php393,660 D. Php378,000 2. During a free-fall, a skydiver jumps 16 feet, 48 feet, and 80 feet ...

physics
One end of a piano wire is wrapped around a cylindrical tuning peg and the other end is fixed in place. The tuning peg is turned so as to stretch the wire. The piano wire is made from steel (Y = 2.0x1011 N/m2). It has a radius of 0.51 mm and an unstrained length of 0.65 m. The...

Physics
At what speed must I travel, in kms, if i need to travel 22.6 kms in 18 minutes?

Algebra
An isotope has a half-life of 97 years. how much of a 19-gram sample is left after 150 years?

physics
what is the heat capacity of a gold ring that has a mass of 5.00g?

Physics
P1 -P2 = .5* (v1^2-v2^2) difference in pressure multiplied by area

calculus iii
What heading (or direction) and airspeed (speed in still air) are required for an airplane to fly 837 mph due north if a wind of 63 mph is blowing in the direction of S 11.5 degrees E?

calculus III
What heading (or direction) and airspeed (speed in still air) are required for an airplane to fly 837 mph due north if a wind of 63 mph is blowing in the direction of S 11.5 degrees E?

Math
Name a real life object that could be represented by a net . 1. Cone 2. Cylinder 3. Rectangular prism For a cone I think a ice cream cone

chemistry
0.4 mol/L or 0.4M

Math
He needs to make a large circular wooden clock that measures about 6 feet in circumference. Write an equation he can use to find r the radius of the clock

MATH
Bob needs to cut a piece of glass for her table. The table is in the shape of a regular hexagon. The glass measure 1 1/2 feet on each side. What is the perimeter of the piece of glass?

Math
(x,y) --> ( x-6, y - 3)

Math
Write a description of each rule (x,y) --> (x + 5, y -2)

Math
13/52 * 12/51. W/o replacement means the second king would have l less in both the numerator and denominator so multiply the 2 results.

algebra
the three angles of a triangle are 3x,x+10, and 2x-40. Find the size of the smallest angle in a triangle

college physics
Two blocks each of mass m = 4.10 kg are fastened to the top of an elevator as in the figure below. (a) If the elevator accelerates upward at 1.6 m/s2, find the tensions T1 and T2 in the upper and lower strings. (b) If the strings can withstand a maximum tension of 96.0 N, what...

Science!
How is the structure of an alpha-helix maintained?

Math
The two back legs of the directors chair meet in a 72 degree angle. Find the measure of each angle formed by the two back legs.

algebra
Can someone please help me with this math problem? Thanks. Let g(x)=x^2-5 and h(x)=3x+2. Perform the function operation. -2g(x)+h(x) That would be -2x^2 +10 + 3x +2 = -2x^2 + 3x +12. oh, thanks! I understand. I have another problem I'm unsure of. g(x)*h(x) I got 9x^2+12x-1...

algebra
How do I tell if (x-4)/-3=y is a function? thanks It tells you wnat y is in terms of x. It is therefore a fucntion.

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