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cl 15. chain at the hardware store costs $0.15 per foot. if you bougil 31.it
you buy? 6.25- 1,
4 9
16. you have a pitcher that holds 39.3 oz of lemonade. if each glass holds 8.8 oz, how many glasses can you
completely fill?
4.15 17. the
17. the design on a 58.1-inch scarf has 14 stripes. if all of the stripes have the same width, how wide is each
stripe?
18. find the sum of -6 +9.
19. find the sum –37 + (-25).
46 and b = 34.
-
2
20. evaluate a + b for a =
21. find the difference 10 - (-25).

Look at attachment. has all info needed. need

A50-foot ladder is leaning against a vertical wall. if the base of the ladder is 45 feet from the base of the wall, find the angle the bottling of the ladder makes with the ground.

Data on oxide thickness of semiconductors are as follows: 426 432 418 418 421 436 418 408 431 435 423 426 411 434 435 432 411 426 407 439 422 426 412 416 consider this data as a sample of the population. (a) calculate a point estimate of the mean oxide thickness for all wafers in the population. (round your answer to 3 decimal places.) (b) calculate a point estimate of the standard deviation of oxide thickness for all wafers in the population. (round your answer to 2 decimal places.) (c) calculate the standard error of the point estimate from part (a). (round your answer to 2 decimal places.) (d) calculate a point estimate of the median oxide thickness for all wafers in the population. (express your answer to 1 decimal places.) (e) calculate a point estimate of the proportion of wafers in the population that have oxide thickness greater than 430 angstrom. (round your answer to 4 decimal places.)