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MATH SOLVE
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General
Alicia Whitman rented a station wagon for her vacation. The wagon rented f $35.40 per day plus 21c per mile. She used the wagon for 7 days. She paid $54.20 for gasoline during her 620-mile drive. What is her cost per mile to the nearest cent?
General
3 months ago
PLEASE HELP ASAP!!! WILL GIVE MORE POINTS IF ANSWERED QUICKLY!!! Emily leaves her house at 8:25 a.m to bike to her school, which is 3.42 miles away. When she passes the post office, which is 3/4 mile away from her home, she looks at her watch and sees that it is 30 seconds past 8:29 a.m. If Emily's school starts at 8:50 a.m., can Emily make it to school on time without increasing her rate of speed? Show/and explain the work necessary to support your answer.
General
3 months ago
The force, F, needed to break a board varies inversely with the length, L, of the board. If it takes 24 pounds of pressure to break a board that is 2 feet long, how many pounds of pressure would it take to break a board that is 5 feet long?
General
3 months ago
An arrow is shot vertically upward at a rate of 220ft/s. Use the projectile formula h=?16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 400ft. Round your answer(s) to the nearest tenth of a second.
General
3 months ago
Plz plz plz plz plz plz plz help help help me plz help me I’m begging you plz help me plz
General
3 months ago
Find the area of the circle with the given radius or diameter use pi equals 3.1 4 R is equal to six
General
3 months ago
A rectangular prism has a base of 18 cm by 15 cm and a diagonal of 25 cm. Identify its height. Round to the nearest tenth. HELP PLEASE!
General
3 months ago
a cylinder and a rectangular prism have the same volume and the same height the base of the prism is a square with a side length of 9 cm what is the approximate radius of the cylinder?A. 4.5 cm B. 5.1 cmC. 12.9 cm D. 25.8 cm
General
3 months ago
The vertices of a quadrilateral ABCD are A(−7, −2), B(−3, −2), C(−4, −5), and D(−8, −5). The vertices of another quadrilateral FECD are F(−7, −8), E (−3, −8), C(−4, −5), and D(−8, −5). Which conclusion is true about the quadrilaterals? Their shape and size are same. They have unequal corresponding angles. They have unequal corresponding sides. They are similar figures.
General
3 months ago
In triangle PQR, point X could represent _____.A) the incenter B) the centroid C) the orthocenter D) the circumcenter
General
3 months ago
Two of the cards of an ordinary deck of 52 cards are lost. What is the probability that a random card drawn from this (defective) deck is a spade? (Show your work! Define any events that you use, and be clear and neat!)
General
3 months ago
how to find the Mean Absolute Deviation of 2,4,0,3,4,1,3,1,1,5?
General
3 months ago
Write an equation that expresses the following relationship. p varies jointly with the square of d and the cube of u In your equation, use k as the constant of proportionality.
General
3 months ago
The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the two rear wheels of eight cars and runs the cars until the tires wear out. The data (in kilometers) follow. Find a 99% confidence interval on the difference in the mean life.Car Brand 1 Brand 21 37734 352022 45299 416353 36240 355004 32100 319505 37210 380156 48360 478007 38200 378108 33500 33215(a) Calculate d=(b) Calculate sD =(c) Calculate a 99% two-sided confidence interval on the difference in mean life.
General
3 months ago
A garden area is 30 ft long and 20 ft wide. A path of uniform width is set inside the edge. If the remaining garden is 400ft^2, what is the width of the path?
General
3 months ago
For a sample of eight bears, researchers measured the distances around the bears' chests and weighed the bears. Minitab was used to find that the value of the linear correlation coefficient is requals0.952. Using alphaequals0.05, determine if there is a linear correlation between chest size and weight. What proportion of the variation in weight can be explained by the linear relationship between weight and chest size?
General
3 months ago
The shade of marble tile is measured by the amount of light reflected by the tile measured on a scale of 0-255. A perfectly black tile would reflect no light and a perfectly white tile would measure 255. A sample of nine Mezza Perla tiles were measured, with the following results: 204.999 206.149 202.102 207.048 203.496 206.343 203.496 206.676 205.831(b) can you conclude that the mean shade of Mezza Perla tile (µ) is greater than 204.8?
General
3 months ago
Which of the following does not characterize stratified random sampling? A. Nonrandom sampling is used B. The population is divided into strata that are distinct C. The population is divided into strata that are mutually exclusive and exhaustive D. The population is divided into strata that are homogenous
General
3 months ago
A new restaurant with 138 seats is being planned. Studies show that 59% of the customers demand a smoke-free area. How many seats should be in the non-smoking area in order to be very sure (mu plus 3 sigma) of having enough seating there?
General
3 months ago
A roller coaster car goes above and below ground.Use the number line to show it changes in height.What is the height of the car at the end of the ride
General
3 months ago
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