CAN YOU HELP ME PLEASE
You mix 3L of 20% acid solution with 2L of 70% solution of the same acid. What will be the final concentration?(concentration = amount of pure substance/total amount of solution)submit the answer... more
17.After the first 4 quizzes, Ron’s quiz average is an 87. There are two quizzes remaining for thequarter and the maximum score for any individual quiz is 100. What is the minimum grade Roncan... more
Jane bought a pair of headphones at a 20% discount. After including the 8% sales tax, the totalprice of the headphones was $54. What was the original price of the headphones before thediscount?
Find the indicated angle θ. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 13, c = 11, and ∠C = 50°.
Round your answer to one decimal place. Assume that θ is greater than 90°.)
Find the area of the shaded figure, rounded to two decimals. (Assume x = 1 and y = 4.)
rewrite the expression log2^x+3log2^y-4log2^z
my answer is log2 1x1^3 --------------- 1^4Although i am marked wrong could anyone explain what im doing wrong plz
You throw a ball at an angle of 50º, and with an initial speed of 25 ft. per second. How far does the ball travel?
Radioactive Decay Model
The half-life of strontium-90 is 28 years. How long will it take a 30-mg sample to decay to a mass of 24 mg? (Round your answer to the nearest whole number.)Radium-221 has a half-life of 30 sec.... more
I need these plz
A pet supply company wants to find out how satisfied their customers are with their service and inventory.Assume that a survey was conducted of 500 people and 472 customers said that they were... more
If the population in 1996 was 5235, what was the population in 2000? What will it be in 2020?
The population of a town is growing at the rate of 7% per year. If the population in 1996 was 5235, what was the population in 2000? What will it be in 2020?
This is sort of a general question
I'm wondering, is it possible to tell whether a triangle circumscribed in a circle, can we identify whether it is an isosceles right triangle without ever knowing any side lengths or other angles... more
A circle is given by the equation x^2+10x+y^2-8y=40. Determine the center and length of the radius
New to these types of problems.
I have the answer, but I’m pretty sure it’s wrong
Please walk me through this the steps and give me a right solution:A pentagonal pyramid has a lateral area of 300 in2, where the perimeter of the base is 40 in. Determine slant height.
Please help me solve this
A car wheel has a 16inches radius. Through what angle does the wheel turn when the car rolls forward 3ft
At the beginning of an experiment, a scientist has 212 grams of radioactive goo. After 120 minutes, her sample has decayed to 6.625 grams.
What is the half-life of the goo in minutes? Find a formula for G(T) to amount of goo remaining at time t. G(T)=How many grams of goo will remain after 35 mins?
The half-life of Palladium-100 is 4 days. After 16 days a sample of Palladium-100 has been reduced to a mass of 6 mg.
What was the initial mass (in mg) of the sample?What is the mass 8 weeks after the start?
Geometry problem I do not understand how I will have different dimentions and what the configuration is
Many real-world problems involve the idea of optimization. For example, if I need to buy fencing to create a 250,000 square foot enclosure (almost 6 acres) for my horses but I want to spend the... more
Polygons (Finding Area)
Find the area of a regular octagon with a radius 4 centimeters.Area = 1/2 (Apothem(Perimeter))Area= 1/2 (4(Perimeter)I think I am erroneuosly leaning on a formula that does not seem to work unless... more
Co-Ordinate Geometry (Circumcentre)
When solving, is there certain points to use to get the correct answer ti find the circumcentre of a triangle with given vertex points? Say for example, point A is (0,0), point B is (4.0) and point... more
Need help understanding a problem.
In ∆RST, R is a right angle. If cos T =12/13, determine cos S.
Evaluate the expression under the given conditions. sin(θ − ϕ); tan(θ) = 3 4 , θ in Quadrant III, sin(ϕ) = − 3 10 10 , ϕ in Quadrant IV
Please help with steps. I don't even know where to begin. Thank you :)