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Question 393490: Use what you know about multiplying by powers of 10 and the Commutative and Asssociative Properties of Multiplication to find the product. Write the answer in scientific notation.
(2.5 x 10^-12)(2 x 10^6)
Click here to see answer by neatmath(300)

Question 393666: If average of 5 numbers, 4x,6,23,34,2x + 3 is 46, find the value of 6x.

Click here to see answer by mananth(12270)

Question 394028: b^3 multiplied by what = a^2b?
Click here to see answer by robertb(4012)

Question 394045: Simplify, if possible: -(x^2)^4(-x^2)^4
Click here to see answer by rfer(12654)

Question 394303: Chang has scored 87,94 ,89 , and 93 on his previous four tests. What score does he need on his next test so that his average (mean) is 87 ?
Click here to see answer by TeishaRenee(14)

Question 394488: How can you use the Quotient of a Power Property to explain the definition of x^-n? (Hint: Think of 1/x^n as x^0/x^n)
Click here to see answer by richard1234(5390)

Question 394540: Simplify, if possible: (3a / a^3 x a^0)^3
Click here to see answer by edjones(7569)

Question 394812: determine wheather the order pair is a solution of the given equation
(-1,-5)
y=x-4
determine wheather or not the ordered pair is a solution of the system
(-1,-3)
3x=0-y
4x=-5-3y
how would you graph this equation
6x-18y=0
Click here to see answer by stanbon(57290)

Question 395329: Translate the following sentence into an equation 1/5 of the sum of a number and 12 is 27
Click here to see answer by ewatrrr(10682)

Question 395285: average of 78 and 2 other numbers

Click here to see answer by jim_thompson5910(28536)

Question 395330: Translate the following phrase into an algebraic expression The average of 78 and two other numbers
Click here to see answer by MathLover1(6625)

Question 394529: Simplify:
Click here to see answer by gwendolyn(128)

Question 395767: Your test average is 85 after taking 4 tests. On test No. 5 you make 95. Now what is your average?
Click here to see answer by Alan3354(30993)

Question 395767: Your test average is 85 after taking 4 tests. On test No. 5 you make 95. Now what is your average?
Click here to see answer by ewatrrr(10682)

Question 395730: A recipe that feeds 6 calls for 9 potatoes. How many potatoes are needed to feed 10 people?
Click here to see answer by rfer(12654)

Question 395957: Hello , can you please help me ? The problem I have to simplify is (8/27)^2/3 and the answer to it is 4/9 but i don't understand how to get that answer ? please help ! thank you :)
Click here to see answer by stanbon(57290)

Question 395975: Simplify.
(4/25)^3/2
Click here to see answer by unlockmath(1599)

Question 395973: (16/81)^3/4 - Simplify.
Click here to see answer by unlockmath(1599)

Question 395970: Simplify.
(256/81)^1/4
Click here to see answer by Alan3354(30993)

Question 395972: (27/64)^2/3
Simplify.
Click here to see answer by mananth(12270)

Question 396438: what multiplied by what give me the number 39?
Click here to see answer by rfer(12654)

Question 396417: When light enters water, colors with shorter wavelengths bend more than colors with longer wavelengths. Violet light has a frequency of 7.5 x 10^14 cycles per second, and red light has a frequency of 4.6 x 10^14 cycles per second. Which of these colors of light will bend more when it enters water? Justify the answer.
Click here to see answer by richard1234(5390)

Question 397062: jerod has quiz scores of 90, 88, 72, and 83. What does he need tl score on his next quiz so that he has an average quiz score of 88?
Click here to see answer by josmiceli(9668)

Question 397307: if i got 21 questions wrong out of 80 whats my score
Click here to see answer by ewatrrr(10682)

Question 397722: The attendance at 3 football games fluctuated above and below the average according to the following table. What was the net change from the average attendance after these three games?OMG...HELP PLZ...!! IM PULLING TEETH..!! PLZ..PLZ..!!
Game 1: -2851
Game 2: 5911
Game 3: -2708
Click here to see answer by scott8148(6628)

Question 398247: what is the sum of 802 and 1
Click here to see answer by richard1234(5390)

Question 398503: When you have an average of 88 and you have two quarterly's before the end of the semester what do you need to get on both of the quarterly's to get at least an average of 90
Click here to see answer by stanbon(57290)

Question 398701: Five times a number subtracted from the sum of 17 and twice the number. Please help me write this question out. I tried I got 5x-17+2x. I have no clue what I'm doing wrong please help thank you in advance
Click here to see answer by stanbon(57290)

Question 399130: Find m and n so that x^m(x^n + x^n-2) = x^5 + x^3
Click here to see answer by robertb(4012)

Question 399128: The side length of a square is (8+2x) units. The area of this square is the same as the perimeter of another square with a side length of (x^2 + 48) units. Find the value of x.
Click here to see answer by mananth(12270)

Question 399327: how do i figure/find the average of
-10, 8, -4, 2, 7, -5, -12
Click here to see answer by rfer(12654)

Question 399327: how do i figure/find the average of
-10, 8, -4, 2, 7, -5, -12
Click here to see answer by josmiceli(9668)

Question 399794: You can multiply two numbers by rewriting the numbers as the difference of two squares. For example: 36 x 24 = (30 + 6)(30 - 6) = 30^2 - 6^2 = 900 - 36 = 864
Use this method to multiply 27 x 19. Explain how you rewrote the numbers..
Click here to see answer by mananth(12270)

Question 399973: Evaluate
-7[-8-(-6)]
Click here to see answer by rfer(12654)

Question 400376: a student received grades of 80, 85, and 76 on three exams. find the least grade that the student must get on the fourth exam to obtain an average of no less than 84.
Click here to see answer by rfer(12654)

Question 400625: How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9, which are divisible by 5 and none of the digits is repeated
Click here to see answer by Alan3354(30993)

Question 401647: To get a B in math, Mary must average 80 on all tests. Suppose Mary has scored 60,72,98, and 85 on the first four test. What score does she need on the fifth test to receive a B.
Click here to see answer by nerdybill(6957)

Question 402214: Hi I am trying to figure out an average pertaining to blood group antigens ex:
24% of Caucasians are negative for the blood group antigen
8% of blacks are negative for the blood group antigen
if 12% of the population is black, how would I figure the percentage of the general population that is negative for the blood group antigen?
Thanks So Much!!
Click here to see answer by scott8148(6628)

Question 402469: If you had an average of 83 on your first four tests but an average of 90 on your other three tests, what would your overall average be?
Click here to see answer by ankor@dixie-net.com(15646)

Question 402971: the average of the test scores of a class of x students is 74 and the average of the test scores of a class of y students is 88. When the scores of both classes are combined the average is 76. What is the value of x/y?
Click here to see answer by jim_thompson5910(28536)

Question 403042: Brian has an average of 86 in 4 of his math tests. If he would like to get an average of 87. How much does he need to score in his 5th final test?
Click here to see answer by scott8148(6628)

Question 403299: How do you average two test scores together? What would the average of a test that you got an 85% on and a test you got a 45% on?
Click here to see answer by Alan3354(30993)

Question 403387: Translate the sentence to an algebraic inequality.
The length of a garden is at least 20 feet. I THINK I DID, THIS RIGHT!! CAN I HAVE SOMEONE ANSWER SO I CAN CHECK PLZ!!!
Click here to see answer by jim_thompson5910(28536)

Question 403386: During the year, the Cheung’s real estate bill included $224 for county services. Of this amount, $101 went to the highway department. What percent did the county highway department receive? Round your answer to two decimal places. CAN ANYONE HELP ME !!
Click here to see answer by josmiceli(9668)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330