Math Answers

Kgabo completed 2/5 of a job. The next day he completed 3/8 of the remaining job. The part of the job that is still left, given as a fraction is?

The correct mathematical expression for five less than three times a number four and the same number is??

on a final examination in biology, the mean was 75 and the standard deviation was 12. determine the standard score of a student who received a score of 60 assuming that the scores are normally distributed.

A meeting of envoys was attended by 5 koreans and 3 filipinos. if four envoys were selected at random one after the other, determine the values of the variable K representing the number of koreans.

three coins are tossed let h be the random variable when head will occur.find the values of the random variable H

1. Agriculture A fruit grower raises two crops. apples and peaches. Each of these crops is sent to three different outlets for sale. These outlets are The Farmer's Market. The Fruit Stand, and The Fruit Farm. The numbers of bushels of apples sent to the three outlets are 125,100. and 75. respectively. The numbers of bushels of peaches sent to the three outlets are 100. 175. and 125. respectively. The profit per bushel for apples is$3.50 and the profit per bushel for peaches is $6.00. (a) Write a matrix A that represents the number of bushels of each crop i that are shipped to each outlet j. State what each entry aij of the matrix represents. (b) Write a matrix B that represents the profit per bushel of each fruit. State what each entry bij  of the matrix represents. (c) Find the product BA and state what each entry of the matrix represents.

Construct a table of values to investigate the following limits.

1. lim (10/x-2)

x-> 7

2. lim (x+6/x+2)

x-> 1

3. lim f(x)

x-> -1

If f(x) { 1/x if x ≤ -1}

If f(x) { x2-2 if x > -1}

The probability that a patient recovers from a delicate heart operation is 0.9. The next

100 patients having this operation, find the probability that

(i) between 84 and 95 (inclusive values) survive?

(ii) fewer than 86 survive?

Delisile spends 30% of her income on rent and 50% of the remaining on food and travelling. She pays R2 200,00 per month for education and now has R3 120,00 left. Her monthly income is

1.     A company manufactures fuses. The percentage of non-defective fuses is 95.4%. A sample of 10 fuse was selected. Calculate the probability of selecting at least 3 defective fuses.