# Math grd12

4,618 results, page 17-
## Pre calc

Please help me proof the identity. This isn't even math to me, I can not understand it so please show all work. God bless A)1-cos2x/sin2x=tanx B) sin4x/sinx=4cosxcos2x

*asked by Rachel on April 13, 2017* -
## Math

A teacher tallies up the grades on a math test in a class of 34 students, the results are A1, B11, C16, D3, F1. What is the empirical probability of a student getting a C? Express as a fraction.

*asked by Veronica on October 30, 2016* -
## statistics

A final exam in Math 157 is normally distributed and has a mean of 75 with a standard deviation of 12. If 36 students are randomly selected, find the probability that the mean of their test scores is greater than 70.

*asked by Jessica on June 23, 2011* -
## physics

Good study tips for physics? I am having trouble understanding the theory and how to apply it into the equations. People have told me I should not just punch in numbers, but I do not know what to do besides that; I treat it like math.

*asked by Daniel on September 18, 2011* -
## Math

Graph the function Identify the vertex and axis of symmetry f(x)=2x^2 + 4x +1 please explain steps I need to do. I keep looking at notes and just can't grasp any of it. Failing math not sure how to start again. I think I missed something major.

*asked by Anonymous on March 11, 2017* -
## Math

find the median of 2,2,26,14,49,42,39. If necessary, round to one decimal place. A) 14 B)25.4 C)39 D)26 I have done the math for this calculation by adding the numbers and then divided by 7 and got 24.85714286 by rounding I would have 24.9. Which isn't an

*asked by Carol on May 12, 2015* -
## Math 116A

I have been out of school for a very long time and I just enrolled to take some classes online and I am having a lot of trouble with my math. I just cannot seem to understand what it is that they want. Is there anyone that can help me with this. I am

*asked by Robert on January 24, 2009* -
## psychology

For finals week, you had to be prepared for exams in english,math,spanish,italian,and history. how should the sequence of study be arranged to minimize the possibility of interference

*asked by nancy on October 26, 2012* -
## Algebra

Hey, I was wondering if anyone could possibly restate a math question for me? Here it is : Decribe the pattern relating values of those variables and the way that the relationship is shown in the table and the graph.

*asked by EmilyMay on August 23, 2012* -
## math

i need help with this geometry prblem my math book is online on this site: w w w . k e y m a t h . com / D G 3 the class passcode is: 1574-4c524 The chapter is 0 Lesson 0.2 pg. 9 problem number 6 URGENT !!!

*asked by vaishnavi on September 19, 2010* -
## Math

Every question like this I have gotten wrong: "Multiply or divide the expression below. Leave your answer as simplified as possible." (3x-1)(x+7) 10(2x-5) --------- • --------- 4(2x-5) (4x+1)(x+7) This is from the college preparatory math section 10.1.4

*asked by Clair on January 28, 2010* -
## Helping Sites 4 Math

I know this really isn't a type of question for subjects, but i was just thinking, are there any sites for teaching math? I finished summer school, and i just want to review stuff in case i forgot.

*asked by Losa on July 19, 2012* -
## um reviewing old subjects .. Linear Equations

Math.. and i don't understand this... plz go throw steps w me.. Like ex: 2 complementary angles a 24 degrees different. How much does each angle measure? Equation1: Equation: Method1: Method2:

*asked by Kennedy on April 30, 2013* -
## Math

I need help correcting my math homework. I have been out sick and was told that I have to have it done by monday and I missed alot. I don't know how to do this. It's surface areas and volume and solids and triangle and prisms.

*asked by Asa on May 16, 2015* -
## Math

My math assignment is conversion with weight. 1. 6 T= lb 2. 18lbs= oz 3. 3,200 oz= lb 4. 12T= lb 5. 9lb= oz 6. 7lb= oz 7. 100lb= oz 8. 60,000= T I need major help on the above. I do not know where to begin and need to know if there is some sort of chart I

*asked by Patrick on November 16, 2015* -
## geometry

I sent question about rt triangle, ABC, needing to find a & b. altitude was 4, base a and hypotenuse b. You mentioned knowing another angle. There is one < A is 45 degrees. Thanks for all your help. Math is not an easy subject for me.

*asked by robin on April 25, 2015* -
## math

The aera of rectangle MATH is 30 sq cm and each side-length is a counting number of cm. H is the midpoint of TO. The area of square ECHO is between 5 sq cm and 24 sq cm. Find the perimeter of the entire fiure in cm.

*asked by nguyen on December 11, 2012* -
## geometry

Pllllleeeaaasssssssseeeee help me with this math fast! a. Find x. The figure is not drawn to scale. b. Is the triangle equilateral, isosceles, or scalene? Explain. Image at imgur . com / 6y2f9a3

*asked by Neko Boy on May 22, 2013* -
## Kinetics

I'm really struggling to understand this chapter in chem class, partly due to an inadequate math background. does anyone have any tips for learning kinetics? i'm starting to fall behind.

*asked by Gabe on February 26, 2008* -
## Math 11 - Rational Expressions

I really don't understand how you find or identify the restrictions at all for rational expressions, can someone talk me through it? I have a math exam Monday and I'm stressed. Thanks. Here are some examples for my textbook if needed... 1) 2x + 1 / 2x - 1

*asked by M. on June 21, 2014* -
## Math help!

Jack has the following scores on exams in his math class. 81, 87, 93, 89, 61, 81 If he wants to make his performance sound as good as possible, which measure should he use—the mean, the median, or the mode of his exam grades when he talks about how he is

*asked by Kristin on October 10, 2012* -
## Math

2x4²(4 squared) that is the math problem i cant figure out if 4² means 4x4 or if it measns 4x4x4x4 please help its the sendond day of grade 9 ,, i don't wanna look dum

*asked by Stephenie on September 3, 2008* -
## Pre Algebra

Hi, does anybody know what a quadrilateral in which opposite sides are congruent and parallel is? It's on a crossword puzzle on my math homework and is thirteen letters long and from the beginning the seventh letter is an E. Thanks so much to anyone who

*asked by Halle on February 9, 2014* -
## math

Explain how to form a ratio and how ratios can be used to compare two numbers. Please help me Thanks http://web.math.com/school/subject1/lessons/S1U2L1GL.html#sm3

*asked by Janet on January 23, 2007* -
## Math

2x4²(4 squared) that is the math problem i cant figure out if 4² means 4x4 or if it measns 4x4x4x4 please help its the sendond day of grade 9 ,, i don't wanna look dum

*asked by Stephenie on September 3, 2008* -
## Math

This seems like it would be a simple math problem but...... How do you create an equation and calculate the difference between 2 birthdays, putting the older person's on top? 5/17/1987 and 10/28/2002 PLEASE HELP ME! hank You

*asked by Josh on May 20, 2014* -
## Google Search

Dear all, If you do not understand a science, math, writing, grammar, history, etc. problem, you can easily find the explanation of the concept you are struggling in on the internet or Google.

*asked by mathtaculator on November 20, 2012* -
## Math

Q) 'What are the dimensions of a cylinder that has the same maximum volume as the box (1131.97 cm2), but uses the minimum amount of material to make it?' Here are the notes I have so far: SA=2Pi r^2 + 2 Pi r (1131.97/Pi r^2) Now i need to use derivatives,

*asked by Josh on November 10, 2007* -
## English

1. He stopped smoking. (Does it mean that he stopped smoking forever or does it mean he stopped smoking for the time being?) 2. He quit/quitted smoking. (What about this one? Is it the same as #1? Do we have to use 'quit' or 'quitted'?) 3. He awoke to find

*asked by John on June 14, 2009* -
## Math

Shandel went to the County Fair this summer and was surprised to see a math game on the midway among the games of skill and chance. Picture of a Midway BarkerIn the game, the barker starts by thinking of a math rule or calculation. The player spins a

*asked by Anonymous on February 23, 2018* -
## Math Fractions

Posted by Mary Mac on Friday, May 9, 2008 at 10:01am. I have this fraction: 6 2/9 + 1 3/4 - 3 5/6= Okay First I changed the mixed numbers into improper fractions. I got this: 56/9 + 7/4 + 23/6 Then I thought you have to find the least common denominator,

*asked by Mary Mac on May 9, 2008* -
## Algebra 1

Solve by completing the square: A rectangular patio has a length of (x + 6) m, a width of (x + 8) m, and a total area of 400 m2. Find the dimensions to the nearest tenth. Please help me with this math problem. Thanks so much.

*asked by Aliyah on March 16, 2018* -
## algebra 1

v(v-3)= v^2+6 Does any one know if this is in the quadratic form or not The v^2 means v second power No it is not. Please read: http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut20_quadform.htm

*asked by Chels on November 13, 2006* -
## chemistry

Answer the following math questions focusing on significant figures a. 45.3L x 10 mol/L = b. 67.894 g ÷ 2.56 L = c. 45.3m + 12.344m + 1000m – 1.34m = d. 35cm + 8.3m + 75.341 km + 80,000 mm = e. (43.7m + 39.3cm) ÷ 25.332 m/s =

*asked by aira on May 11, 2014* -
## science

calculate the following(show steps): volume of a fish tank that is 15cm by 30cm by 10cm? http://www.math.com/tables/geometry/volumes.htm

*asked by jenna on June 21, 2006* -
## chemistry

use logic and simple math to determine how long it will take for a sample of potassium- 42 to decay from 8mg to 0.25mg if the half-life of this radioactive isotope is 124 hours

*asked by jay 1 on October 13, 2010* -
## 6th grade math

my work sheeet said use each of the symbols add,subtract,multiply,and divide to make thte following math sentence true. 12___ 3___ 7___ 1____ 11=0

*asked by Daysi on September 22, 2009* -
## Patterns and rules unit test 7th grade

I go to connection acdeamy and I am in the 7th grade regular math Mrs. Janus I just need some help with this test Find the next three terms of the sequence -2,-12,-72,-432... A. -1,728,-6,912,-27,648

*asked by Kayla Moore on March 31, 2014* -
## Math

Normally, I'm not bad with my math formulas but, in my current lesson I have having some issues. Can somebody please provide me with a (non-complicated) formula for finding the surface area and lateral are for both cylinders and prisms? Any help is much

*asked by Eridan Ampora on April 7, 2017* -
## Calculus

A rational function g has the lines x=2 and x=-2 as vertical asymptotes, the line y=4 as a horizontal asymptote, and numbers 3 and 1 as zeros. Find a formula for g(x). So I got g(x)=(4x^2-16x+12)/(x^2-4) Is this correct Math Mate?

*asked by Leanna on September 6, 2010* -
## statistics

Measures of Central Tendency,variability, and postion 12th Grade math class. organize the data 78,67,95,85,84,86,82,75,85,94,91,57,78,77,88,90,91,86,84,82,75,58,73,75. Then do 4 columns of Grades,Deviations,Squares,and Z-Scores

*asked by Lisa on November 30, 2011* -
## Math And Science for Young Children

Concepts can be characterized as: A. the building blocks of knowledge. B. thoughts that are incomplete until adulthood. C. ideas that young children do not yet have. D. basic to math but not to science. Is D the correct answer

*asked by Tonya on January 10, 2016* -
## Algebra one, help+ check? :)

So, this is my math homework. [ I scanned it so it would be easier to explain what I'm doing] h t t p://oi54.tinypic(Dotcom)/2wei16e.jpg And, I don't exactly get how to do problem number 1, and I was wondering if someone could assit me with that. Thank

*asked by Allyson on January 12, 2011* -
## school

1) A great way to teach math is through children's everyday experiences. Answer:True 2) Children can use words they have never had experience with or heard before. Answer:False 3) Children with limited experiences have limited language ability with regard

*asked by Anonymous on August 6, 2017* -
## Mathematics Education

1.Does language interfere with learning? 2.How does gender affect mathematics achievement? 3.Does mathematics achievement depend on the school location being either rural or urban? 4.What are the various process errors committed in mensuration? Language

*asked by Mfonobong on August 31, 2006* -
## algebra

a math class has 26 women and 12 men. Find the ratio of men to total studens.

*asked by christopher on April 13, 2010* -
## Math

_______ and _______ are commutative. What are the two basic math operations where the arguments commute? Think arithmetic.

*asked by Kayla on August 28, 2006* -
## Maths

Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?

*asked by Jackie on April 3, 2014* -
## Math

How many numbers between 100 and 200 can be expresssed as powers of 2? I have trouble with powers but I'm an A math student.

*asked by Hales on October 27, 2016* -
## math

the steps to a math quiz. the earth rotates once every 23 hours 36 minutes 4 seconds.how many seconds is that?

*asked by luzia on October 16, 2009* -
## Finite Math Help Please!!!

Finite Math Help Please!!! Can someone help me ? I am confused about this Problem? Median Quartile 1 (Q1) Quartile 3 (Q3) for boxplot 9 10 11 12 13 14 15 16 17 18 19 20 Data

*asked by fred on October 25, 2016* -
## math

can someone explain step by step to do math problems for to solve the system ill use an example 7x3y=-2 -7x-7x=14

*asked by sherri r on January 19, 2009* -
## MATH

Hi this goes to Ms. Sue or anybody I posted a question and no one answered it ! it was Anonymous and it was today under Math and it was at 1:31 ! Please answer my question ! (: Thanks !(:

*asked by Anonymous on January 16, 2013* -
## algebra

i need help with my math problem: x varies directly as the square of s and inversely as t. how does x change when s is doubled? when both x and t are doubled?

*asked by mindy on May 26, 2008* -
## geometry

show that the points A(-4,2) B(1,4) C(3,-1) D(-2,-3) are verticies of a square. please show me how to solve this type of math problem.

*asked by alex on August 13, 2012* -
## 4th grade Math

Math has a 150 page book. he has read 1/3 of it. How many pages has he read so far? Is 50 the correct answer?

*asked by Hayley on December 16, 2008* -
## Math

Math huron scored 84% on her last history test. Of she got 21 answers correct , how many question did the test have?

*asked by Jo on April 15, 2012* -
## Math

Math huron scored 84% on her last history test. Of she got 21 answers correct , how many question did the test have?

*asked by Jo on April 15, 2012* -
## math

Can you please give me a few different math examples of what you meant when you said - You do not add powers with different exponents, but not powers of different bases. Thank you so much.

*asked by jo on October 10, 2009* -
## math

math ? FIND THE VALUE OF 5 - 35,791 a. five hundred b. five thousand c. five thousandths d. not given I selected - b. five thousand correct? or not?

*asked by Ross on October 3, 2009* -
## Math

Math Riddle: Move only one number so 102=100. You may not eliminate or add a number.

*asked by Kacy on November 20, 2007* -
## Algebra

Explain patterns in the placement of the decimal point when multiplying 5 by 10^2, 10 ^1 and 10^0. Please explain i'm not very good with math.

*asked by katy on October 3, 2018* -
## 4 grade math

i need help on this problem. make 36/9 into a false number sentence? please! help me to understand this math problem thank you for your kindness.

*asked by samie on November 4, 2009* -
## math

hi my name is Hannah and I need help with my math homework it is something to do with multiplying trapezoids and triangles? Also, what are the formula for the shapes so that way i would be able to do my homework? THANKS FOR THE HELP!!!!!!

*asked by hannah on March 4, 2013* -
## Math grade 9

46=2-8w-3w I tried adding -8w to both sides and i got the answer wrong... my math text book says the answer should be -4 but i don't know how to get it

*asked by I need help please! on November 13, 2016* -
## punjab technical university

A student recorded her scores on weekly math quizzes that were marked out of a possible 10 points .her scores were as follows

*asked by sarita mishra on December 15, 2015* -
## Math

You have 17fourths of pizza. Show with math or pictures how many pizza you have. 4 pizzas with 1 slice left. 4

*asked by Alison on August 27, 2014* -
## Math

Anyone have the answers to the connections Academy math 6 b unit 4 lesson 10 unit test? POST AS SOON AS POSSIBLE PLEASE!

*asked by Aaron walshe on May 8, 2018* -
## Math

If you're given a 90 degree angle split down the middle, and one of the angles is 30 degrees, what would the other angle be? sorry im not too good at math

*asked by Dara on January 14, 2011* -
## MATH

IF YOU HAD TO GET A 21.1 GRADEPOINT OUT OF 215 QUSTIONS HOW MANY WOULD YOU HAVE TO GET RIGHT English: 75 Math: 60 Reading: 40 Science: 40 Total: 215

*asked by Debra on September 12, 2008* -
## ghost in city hall

Hello all. Does anyone have a scanned copy of "ghost in city hall" worksheet? It is a math worksheet. Thank you, Sandy

*asked by sandy on April 26, 2008* -
## Algebra

Using only the number 1,2,3,4, construct a math expression that equals to the number 34. You must use all four numbers in this equation. What is the answers?

*asked by Malayna on September 9, 2010* -
## math

Use symbolic Math symbolic representation: 1. The Density of a rock is the ratio of its mass to its volume.

*asked by Kay on September 9, 2010* -
## math

PWEESE HELP. There are 18 boys and 12 girls in math class. What is the ratio of girls to total students? 18:30 12:30 30:12 30:18

*asked by DAB on April 28, 2018* -
## Weather

what is 34f in celcius C= 5/9 (F-32) 32F is the freezing point of water, so 34F ought to be close to zero in C. Do the math.

*asked by Jaylen on January 14, 2007* -
## Math

Translate the following sentence into math symbols. Then solve the problem. y more than 4 is -36 My answer: 4 + y = =36 y = -40? Did I answer both of the questions right?

*asked by James on September 14, 2015* -
## To "bad@math" (and other names)

Please post under one name. Please do not post to demand that someone go back and answer your previous questions. A math volunteer will get to them when he/she can. Thanks.

*asked by Writeacher on September 13, 2007* -
## MATH

IF YOU HAD TO GET A 21.1 GRADEPOINT OUT OF 215 QUSTIONS HOW MAY WOULD YOU HAVE TO GET RIGHT English: 75 Math: 60 Reading: 40 Science: 40 Total: 215

*asked by Debra on September 12, 2008* -
## Math

You estimate there is an 80% chance you will get an A on your math final, and a 75% chance you will get an A for your semester grade. What is the probability that both will happen?

*asked by ValeeRo on May 8, 2013* -
## algebra

erika has received scores of 82, 87, 93, 95, and 90 on math quizzes. What score must Erika get on her next quiz to have an average of 90?

*asked by aniiiii on May 17, 2011* -
## Math

A math class has 26 women and 12 men. find the ratio of men to total students

*asked by christopher on April 13, 2010* -
## Math

A math quiz is made up of 5 multiple choice questions, each with 4 possible answers. How many possible sets of answers are there?

*asked by Emmie on May 2, 2016* -
## math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

*asked by cheyenne on April 10, 2013* -
## math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

*asked by cheyenne on April 10, 2013* -
## math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

*asked by cheyenne on April 10, 2013* -
## Algebra

Your math test scores are 68 78 90 and 91 what is the lowest score you can iron on the next test and still achieve an average of at least 85

*asked by Marco on September 8, 2015* -
## math

Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?

*asked by bobby on October 24, 2012* -
## math

Thank you i think im getting somewhere a however, what about -8 x (-4) = -32 am i correct? Ok is this one correct? Also is there a math expert to whom we will pay a decent hourly wage to tutor me?

*asked by zavier on January 28, 2012* -
## math check

Posted by Nora 56 on Sunday, June 2, 2013 at 7:32pm. Sorry to repost but no one answered after I posted on the 2nd,please help, Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give

*asked by Nora 56 on June 8, 2013* -
## Math

Of the first graders who were asked, 1/6 like math best, 2/3 liked reading best, and 12 liked science best. How many were asked their favorite subject?

*asked by Jacob on April 15, 2011* -
## Math

I have two math problems I need help with- Percent proportions 1. 62% of 146 is what number? 2. 18.4% of 880 is what number?

*asked by Anonymous on March 3, 2014* -
## Math

Of the first graders who were asked, 1/6 like math best, 2/3 liked reading best, and 12 liked science best. How many were asked their favorite subject?

*asked by Jacob on April 15, 2011* -
## Math

I need to get which property of multi-plication this person did. the problem is 2(3.45+5.7)=.402 but I got 18.3. HOW?!??!?! I did my math I did every property I could think of/

*asked by Grant on March 1, 2017* -
## math

In a class of 40 students, 27 like math and 25 like filipino. At most how many students do not like at least one of these subject? (With solution pls...thanks....)

*asked by HELP HELP HELP MNHS on January 23, 2013* -
## Calculus

Find the linearization of f(x)= sqrtx at x=25 and use the linearization to approximate sqrt25.2 This is my math: 5+ 1/10 * (25.2-25) but it's wrong.

*asked by Z32 on September 28, 2009* -
## algebra

sonya's average in math class is an 84 after 3 tests. what must she get on the next test to raise her average to an 88?

*asked by cindy on February 21, 2013* -
## math

what type of math problems exemplify the different purposes of variable, and in what way do these different uses of variable can be confusing?

*asked by sandra on November 30, 2010* -
## Trigonometry

Let's solve this fun trigonometric fun math problem! 1.) SEC²X-1/SIN²X

*asked by AwesomeGuy on February 10, 2013* -
## mathematics

Need help with this math problem please. Work need to be show but I have no idea how to complete the problem. (-4)3 (the 3 is an exponent) Thanks for your help

*asked by chasity on August 29, 2010* -
## math

this is a math riddle that i can't do so please help i am a fraction eguivalent to 2/4 the sum of my numerator and my denominator is 21 what fraction am i here it is help me please's

*asked by 5 grade on November 29, 2011*