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MATH SOLVE
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Arsenic is a compound that occurs naturally in very low concentrations. Arsenic blood concentrations in healthy adults are Normally distributed with mean =3.2 micrograms per deciliter (ug/dl) and standard deviation sigma = 1.5. What is the range of arsenic blood concentrations corresponding to the middle 90% of healthy adults?
General
2 months ago
Determine whether the relation is a function. {(-7, -7), (-7, -8), (-1, 4), (6, 5), (10, -1)}
General
2 months ago
Jason and Shawn both begin riding their bikes from different points away from the ranger station. They both ride their bikes in the direction away from the station along the same trail.Jason starts biking 1 mile away from the station. Jason rides at a constant speed of 20 miles per hour.Shawn starts biking 2 miles away from the station. Shawn rides at the same constant speed as Jason.Let y represent the total miles away from the station.At how many hours, x, will it take Shawn to catch up with Jason?Based on the information provided, complete each expression below and determine the number of solutions.
General
2 months ago
The sum of two numbers is 52. Their product is 100. What is the answer?
General
2 months ago
anyone teach me the angles in theorms
General
2 months ago
Item 8 Solve for x. Use the quadratic formula. 2x2−5x−9=0 Enter the solutions, in simplified radical form, in the boxes.
General
2 months ago
Shawn drew a rectangle that was 2 units wide and 6 units long. Draw a different rectangle that has the same perimeter area.
General
2 months ago
what’s the solution to x-4y=-8 and 2x-3y=-16
General
2 months ago
Use elimination to find the solution to the system of equations.
General
2 months ago
solve on the interval [0,2pi] 3sec x -2 = 1
General
2 months ago
Water from a hose is sprayed on a fire burning at a height of 10 m up the side of a wall. If the function h(x) = -0.15t^2 + 3x, where x is the horizontal distance from the fire, in metres, models the height of the water, h(x), also in metres. How far back does the firefighter have to stand in order to put out the fire?PLEASE ANSWER ASAP WILL GIVE BRAINLIEST
General
2 months ago
Solve the system of linear equations by graphing.y = –x – 7x + 2y = 4What is the solution to the system of linear equations?(–4.5, 4.25) (–1.7, –2.8) (0, –7) (3, 0.5)
General
2 months ago
The population of a city is modeled by P(t)=0.5t2 - 9.65t + 100,where P(t) is the population in thousands and t=0 corresponds to the year 2000. a)In what year did the population reach its minimum value? How low was the population at this time?b)When will the population reach 200 000?
General
2 months ago
y = −(x + 4)2 − 7 vertex
General
2 months ago
How much should you invest today if, in 6 years, you want to have $4000 in an account that pays 2.9% interest compounded quarterly? Assume that you will not make any payments into the account.
General
2 months ago
Write an equation that would help you calculate the future value of a savings account that pays 5.2% interest compounded daily if the present value is $10,000. You will keep the savings account for 20 years and make no payments into it.
General
2 months ago
can someone plz help me plz
General
2 months ago
Identify the least common multiple of x2 − 10x + 24 and x2 − x − 12.
General
2 months ago
One angle measure in an acute isosceles triangle is 20°. What is the measure of one of the other angles?80°20°140°160°
General
2 months ago
y = – x – 6 y = x – 4 solve the system of equations using substition. HELP NEEDED IMMEDITLY!!!!!!!!
General
2 months ago
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