3d

#### 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...
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3d

#### algebra problem

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...
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3d

#### algebra question

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°.)

5d

#### 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

7d

#### Trigonometry question

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?

9d

#### 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....
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11d

#### 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...
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#### 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?

15d

#### 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...
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15d

#### 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.

15d

#### 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.

21d

#### 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

22d

#### 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?

22d

#### 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?

22d

#### 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...
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23d

#### 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...
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#### 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...
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07/07/20

#### Need help understanding a problem.

In ∆RST, R is a right angle. If cos T =12/13, determine cos S.

07/07/20

#### 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 :)

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