05/13/17

one sixth of canadas planetaiums are in hailfax. there are 2 planetaiums in hailfax. how many planetaiums are there in canada?
THIS IS A GRADE 8 WORD PROMBLEM. FOR THE QUESTION DO YOU NEED 1 LETTER OR 2.
Follows • 2
Expert Answers •2

05/13/17

proof that 5^20 - 5^19 is even without using calculator
Without using calculator kindly help proof the question, it involves prime power proof.
Follows • 3
Expert Answers •2

05/13/17

Prove that the value of the expression is divisible by 63.
Prove that the value of the expression: (16^3–8^3)(4^3+2^3) is divisible by 63.
Follows • 3
Expert Answers •2

05/13/17

Factor the Two Polynomials
Factor completely:   x2–xy+x–xy2+y3–y2 x2y+x+xy2+y+2xy+2
Follows • 2
Expert Answers •1

05/13/17

x^2-10x=21
this is so supposed to be solved by graphing but i know you can't do that here so pls help regardless 
Follows • 3
Expert Answers •2

05/12/17

A new desk is on sale for 35% off. The sale price of the desk is $168.87. Write and solve an equation to determine the regular price.
Write an equation for the word problem
Follows • 2
Expert Answers •1

05/12/17

Which expression is equivalent to (3√m)^7?
Answer choices are  A) 7^m/3 B) 3^m/7 C) m^3/7 D) m^7/3
Follows • 4
Expert Answers •3

05/12/17

Slide is 143 feet long. The slide is 36 inches deep. How much wax will you need to wax the inside of the slide?
Slide wax covers 2,000 sq. Ft per gallon
Follows • 2
Expert Answers •1

05/12/17

Rate of change How do you do this ????????? the online lecture is no help really
Find the average rate of change of(x)=x^3−6x+5:(a) From−8 to −5(b) From −2 to 4(c) From 4 to 5
Follows • 2
Expert Answers •2

05/12/17

Express 450. nm in m
My professor got the answer 4.50 X 10^-7 ow did he get to this please explain all steps and  he moved the decimal point over he doesn't let us use a calculator so all steps are important 
Follows • 2
Expert Answers •1

05/11/17

Completely factor the polynomial: ax+ay–x–y
AAAAAYYYYYYYYYYYYYY
Follows • 2
Expert Answers •1

05/11/17

Solve the equation by factoring: 6x^2–0.5x=0
UUUUUUHUHHHUHUUHHUHHUHUHUHUu
Follows • 2
Expert Answers •1

05/11/17

Add like terms:-4x^2+4xy
Please help
Follows • 3
Expert Answers •2

05/11/17

light will undergo total internal reflection only when it is
a. in the medium where it travels fastest moving towards the medium where it travels slowest b. in the medium where it travels slowest moving towards the medium where it travels fastest
Follows • 2
Expert Answers •1

05/11/17

Which is the image of (2, 3) under reflection across the y- axis
Answer with work please
Follows • 3
Expert Answers •2

05/11/17

P = P_0e^kt, where P is the population at some time t, P_0 is the initial population at t= 0 and k depends on the rate of growth.
Assume that a city had an initial population of 100 and that the city doubled its population in the first 5 years.   1.Find: P= P_0 = t= k= I assume that I am just plugging in numbers... more
Follows • 2
Expert Answers •1

05/11/17

if a student wanted to project an image on the wall, what type of lens should they use?
a. concave  b. diverging  c. converging d. mirage
Follows • 2
Expert Answers •1

05/11/17

the critical angle of the incident ray is the angle that light
a. needs to reflect straight back upon itself b. needs to bend around an object c. needs to refract along the boundary of a medium d. would take when it passes straight through an object
Follows • 2
Expert Answers •1

05/11/17

the speed of light in air ______ the speed of light in water
a. faster than b.equal to c.slower than d. depends on the temp
Follows • 3
Expert Answers •2

05/11/17

The sum of three numbers of 141. The third number is four times the second. The second number is nine more than the first. What are the numbers?
 The sum of three numbers of 141. The third number is four times the second. The second number is nine more than the first. What are the numbers?
Follows • 2
Expert Answers •1

05/11/17

How do you determine the diameter & circumfence of a circle with only the radius?
Need help How do you determine the diameter & circumfence of a circle with only the radius? 
Follows • 2
Expert Answers •1

05/10/17

Convert to a logarithmic equation
a)  3x=5   b) s=e2t
Follows • 2
Expert Answers •1

05/10/17

150 bulbs are tested. 7 are defective. If there is 60 356 bulbs, how many may be defective?
don't necessarily know what to do here. 
Follows • 2
Expert Answers •1

05/10/17

Based on the definition of specific heat and the information provide below, answer:
If the same amount of heat is added to 1 kg of all these substances, which substance will raise in temperature to the highest value?   Specific Heat Values (J/kg°C) of Different... more
Follows • 2
Expert Answers •1

05/10/17

What is the difference between A,D,E,G,H and B,C,F ------and how are they alike
I was helping my sister with her homework and I found this math question that me or my little sister could find the answer too,and I got no stinking clue what it could be. I would love it if some... more
Follows • 3
Expert Answers •2

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.