# Posts by miles

Total # Posts: 37

**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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