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which method of solving systems of equations is best for you to understand and explain why (substitution or addition). Add an example to your post so other students could understand what you mean.
ex:
2x-3y=6
3x+6y=16
Random sample 400 found that 160 of sample used a certain item. Construct a 90% confidence interval for the proportion of the population that uses the product
a rectangular has width of 1800 cm and length of 2400 cm. the floor will be covered with tiles. each tile . is a square of side 30 cm calculate the number of tiles required to cover the floor fully.
a 180 pound person burns 284 calories playing basketball for 25 minutes.at this rate,how many calories would the person burn in 45 minutes to the nearest whole number
4) The position function s of a particle moving along a coordinate line is given by
s(t)=4t^3 +15t^2-18t+1
, where time t is measured in minutes, and
s(t) is
measured in feet. Assume that
the positive direction extends to the right, and the negative direction extends to the
left.
a) Determine the velocity function [rule] v(t) .
b) Determine the time intervals in which the particle moves to the right.
Use a sign chart.
c) Determine the time intervals in which the particle moves to the left.
Use a sign chart.
d) Draw a schematic representing the motion of the particle in the time interval
(-6, 3)
Find the primeter of a right triangle with legs of 10 inches and 8 inches
wht does it mean when it asks you to find the relationship between two angles
How many ordered 5-subsets of {0,...,9} are there? How many of these start with 0? How many positive integers of exactly 5 digits, but with no two digits the same are there? (In base 10)
How many subsets does the set {a1,a2,...,an} of n elements have? How many subets are the containing the element a1? Prove your claim.
A random sample of 25 was drawn from a normal distribution with a standard deviation of 5. The sample mean is 80. Determine the 95% confidence interval estimate of the population mean.
