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MATH SOLVE
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please help me!!evaluate the expressions: arctan(-√3)Arctan(-√3)
General
4 months ago
what is eleven less than 7 times a number is at least 2 what is the inequality
General
4 months ago
Atmospheric pressure, measured in pounds per square inch (psi) is the force exerted by Earth's atmosphere over a given area. The atmospheric pressure, p, exerted on an airplane flying at an altitude of a miles above sea level can be approximated by the model shown below. What is the best interpretation of 0.8^a in this equation?p = 14.63 - 0.8^aA. If the airplane reaches the outer extent of the Earth's atmosphere, the atmospheric pressure will be 0.8 psi.B. If the airplane is at sea level, the atmospheric pressure will be 0.8 psi.C. For each mile that the altitude increases, the atmospheric pressure decreases 20%.D. For each mile that the altitude increases, the atmospheric pressure increases 20%.
General
4 months ago
What is the area of the isosceles trapezoid shown?
General
4 months ago
a spinner has three unequal sections: red, yellow, and blue. the table shows the results of nolan’s spins (red:10, yellow:14, blue:6). find the experimental probability of landing on each color. write your answers in simplest form and percent form.
General
4 months ago
A flower box in the shape of a right rectangular prism is made of thin metal, shown below. The box has length 90 centimeters (cm), width 45 cm, and height 45 cm. The box is 85 percent filled with soil. Each bag of soil holds 1 cubic (ft^3), and 1 ft^3 is approximately 28,316 cubic centimeters (cm^3). How many bags of soil are needed to finish filling the flower box?A. 1 bagB. 2 bagsC. 6 bagsD. 7 bags
General
4 months ago
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 198 daysμ=198 days and standard deviation sigma equals 20 daysσ=20 days. complete parts (a) through (f) below. (a) what is the probability that a randomly selected pregnancy lasts less than 191191 days? the probability that a randomly selected pregnancy lasts less than 191191 days is approximately
General
4 months ago
When originally purchased, a vehicle costing $23,000 had an estimated useful life of 8 years and an estimated salvage value of $3,000. after 4 years of straight-line depreciation, the asset's total estimated useful life was revised from 8 years to 6 years and there was no change in the estimated salvage value. the depreciation expense in year 5 equals:?
General
4 months ago
Given a regular decagon, find the measures of the angles formed by (a. two consecutive radii and (b. a radius and a side of the polygon.
General
4 months ago
With a perfectly balanced roulette wheel, in the long run, red numbers should turn up 18 times in 38. to test its wheel, one casino records the results of 3,800 plays, finding 1890 red numbers. is that too many reds? or chance variation?
General
4 months ago
select the ordered pair that represents a solution to each function below.1: f(x)= x^2+5a: (-2,-17)b: (-2,1)c: (-2,8)d: (-2,4)e: (-2,-1)f: (-2,9)2: f(x)= -x +6(same options for answers)3: f(x)= x=64: f(x)= x^3-95: f(x)= -x^3-9
General
4 months ago
You and a friend both work two different jobs. The system of linear equations represents the total earnings for xx hours worked at the first job and yy hours worked at the second job. Your friend earns twice as much as you.One week, both of you work 4 hours at the first job. How many hours do you and your friend work at the second job?You and your friend work _____ hour(s) at the second job.( I may have accidentally submitted this already)
General
4 months ago
which of the following appear in the diagram below?? check all that apply
General
4 months ago
Of the following, which is the solution to 2x2 − 5x = −8? the quantity negative five plus or minus i times the square root of thirty nine over four the quantity five plus or minus i times the square root of thirty nine over four the quantity five plus or minus i times the square root of thirty nine over two the quantity negative five plus or minus i times the square root of one hundred ninety two over two
General
4 months ago
Aaron put $1000 in an account that pays 10% interest compounded quarterly he leaves it in the account for six months estimate how much interest he earns
General
4 months ago
Ryan and Scott are each studying a square pyramid.Which statement best describes the two pyramids? A.Both pyramids have the same total surface area, but the areas of the lateral faces and the areas of the bases are different in each pyramid.B.Both pyramids have the same total surface area, and the areas of the lateral faces and the areas of the bases are the same in each pyramid.C.Ryan’s pyramid has a greater surface area.D.Scott’s pyramid has a greater surface area.
General
4 months ago
The diagram shows two different nature trails in a state park. The solid line shows the Dogwood Trail. The dashed line shows the Elm Trail.Which of the following statements are true about the lengths of the trails? Check all that apply.1.The total length of the Dogwood Trail is 16 kilometers.2.The total length of the Dogwood Trail is 24 kilometers.3.The Elm Trail is longer than the Dogwood Trail.4.The difference between the lengths of the trails is 2 kilometers.5.The difference between the lengths of the trails is 6 kilometers.
General
4 months ago
The graphs show the distances traveled by two bikers riding at constant rates. Drag to the table the unit rate that matches each graph.
General
4 months ago
What is true about the rotation of the shaded triangle to the position of the unshaded triangle? Check all that apply.1.The rotation uses the rule (x, y)g(–x, –y).2.The rotation uses the rule (x, y)g(y, –x).3.The rotation is 90° clockwise about the origin.4.The rotation is 180° about the origin.5.The rotation uses the rule (x, y)g(–y, x).6.The rotation is 90° counterclockwise about the origin.
General
4 months ago
Find the equation of a circle with a center at (7, 2) and a point on the circle at (-2, -5).
General
4 months ago
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