Brainiac
Most popular questions and responses by Brainiac
algebra 1
If the graph of a line has a positive slope and a negative yintercept, what happens to the xintercept if the slope and yintercept are doubled? A) The xintercept becomes 4 times larger B) The xintercept becomes twice as large C) The xintercept becomes
asked on October 20, 2014 
algebra 1
Find the x and y intercept of this equation: 10x70y=210 I keep getting the wrong answer. Can you show me how to set it up and work it out?
asked on October 2, 2014 
algebra 1
If the graph of a line has a positive slope and a negative yintercept, what happens to the xintercept if the slope and yintercept are doubled? A) The xintercept becomes 4 times larger B) The xintercept becomes twice as large C) The xintercept becomes
asked on October 20, 2014

Science
you round the atomic mass
posted on November 17, 2015 
Math
The formula for simple interest is A = P(1 + rt) where P is the Principal (money you start with),R is the rate/percent and T is time. A = 2000(1 + .07(5)) A = 2000(1 + .35) A = 2000 (1.35) A = 700 The interest he paid should be $700.
posted on November 17, 2015 
Algebra 2
They look correct to me!
posted on November 17, 2015 
math
2 + 3 + 4 + 5 + 6 = 20 (2 + 3 + 4 + 5 + 6)/5 = 4 4:20, when simplified, is 1:5 5 + 6 + 7 + 8 + 9 = 35 (5 + 6 + 7 + 8 + 9)/5 = 7 7:35 = 1:5 300 + 301 + 302 + 303 + 304 = 1510 (300 + 301 + 302 + 303 + 304)/5 = 302 302:1510 = 1:5 I promise you, the ratio will
posted on November 13, 2014 
math
L = 1 W = 3 2(1) + 2(3) 2 + 6 8
posted on November 13, 2014 
math
Say a b c d e are 1 2 3 4 5. 1+2+3+4+5= 15 (1+2+3+4+5)/5= 3 ratio is 3:15, or 1:5 try this with any set of numbers and it will always work
posted on November 13, 2014 
algebra
Y = 1500  63x Create a table: 1500  63(0) = 1500 1500  63(1) = 1437 1500  63(2) = 1374 1500  63(3) = 1311 Turn them into ordered pair: (0, 1500) (1, 1437) (2, 1374) (3, 1311) Graph these points starting at the origin and go up infinitely (arrow on one
posted on October 26, 2014 
algebra
a) Y = 7.5x b) slope = 7.5 = cost per guest c) 7.5(10) = $75
posted on October 26, 2014 
AP World History
Many aspects of different cultures came together through trade, which led to Greek architecture being spread, similarities in politics, and the spread of philosophical tradition.
posted on October 26, 2014 
Writing
There are 21 students in each of the other 6 groups.
posted on October 26, 2014 
Chemistry
Pressure is the continuous physical force exerted on or against an object by something in contact with it. There are 6563.78979 mmHg in 875.1 kilopascals.
posted on October 26, 2014 
math
The formula for direct variation, which is what is indicated in the problem, is P = sqrt(q) x A. A is a nonzero value, and finding its value will help create a function. 8 = sqrt(25) x A. Solve this and you will find the value of A. Then plug that value of
posted on October 26, 2014 
Algebra
i believe you are correct. the only thing you can do here is replace 2 for x.
posted on October 23, 2014 
Algebra
1600  760 840  =  = 42 60  40 20 so m = 42
posted on October 23, 2014 
math
What you are doing is to the negative power. 4^3 is 64, not 1/64. however,2^2 is 1/4 because it is a negative power. 10 + 4^3 x 2^2 10 + 64 x 1/4 10 + 16 26 Just remember, a positive exponent is integer x integer as many times as the number indicated by
posted on October 22, 2014 
math
the easiest way to do this is to divide the fractions. first turn 2 1/2 into an improper fraction, 5/4. Then find the reciprocal of 2/3. Finding the reciprocal is just flipping 2/3 upsidown and multiplying instead of dividing. 2 1/2 divided by 2/3 5/2
posted on October 22, 2014 
English
the word "or" itself is a transition
posted on October 22, 2014 
English
I need to know the context in which you are putting this word in. Tell me the sentence
posted on October 22, 2014 
math
sorry, 18000 / 9 = ____
posted on October 22, 2014 
math
total revenue divided by # of months equals monthly revenue. 1800 / 9 = ____
posted on October 22, 2014 
math
you need a common denominator. you can use 25 because it is a multiple of 5. To turn the denominator, which is 5, into 25 you have to multiply it with 5. however, then you must also multiply the numerator: 2/5 x 5/5 = 10/25 10/25 + 11/25 = ____
posted on October 22, 2014 
Algebra Slope Intercept Form
5y = x15 (5y)/5 = (x)/5  (15)/5 y = x/5  3 y = x/5 + 3 {this can also be written 1/5(x) + 3}
posted on October 22, 2014 
Algebra Slope Intercept Form
4y=3x+20 divide all the numbers by 4 y= 3/4x  5 you are correct
posted on October 22, 2014 
Math help
6  a + 4  12a  11 6  11 + 4  a  12a 1  13a
posted on October 22, 2014 
Algebra
The equation of a line is made up of 4 parts: the y intercept, the slope, y,and x. To find the slope, follow the formula y2y1/x2x1. 73/45 = 4/1 = 4. Choose either of the ordered pairs to be your x and y. Now you have 3 = 4(5) + b. Solve for b by
posted on October 22, 2014 
7th Grade Math
20 + 4x
posted on October 22, 2014 
math
1 nickel is 1.95 mm thick 3 + 2 + 1 = 6 6 * 1.95 = ______ mm
posted on October 22, 2014 
Science!
I know from general knowledge that oxygen has a double covalent bond, so i think A & D are 2 of the answers. Of course, I only know so much, so I could be completely wrong...
posted on October 21, 2014 
algebra
The opposite of n would be the value of n with an opposite sign. If n was 3, then the opposite of n would be 3. If n was 3, then the opposite of n would be 3. Absolute value n would have a positive sign no matter what. If n was 3, absolute value n would
posted on October 21, 2014 
math
Finding a square root is finding what times what equals that number. Finding a cube root is finding what times what times what equals that number. For example, the square root of 64 is 8, because 8 x 8 = 64. However, the cube root of 64 is 4, because 4 x 4
posted on October 21, 2014 
math
First you need a least common denominator, which is the smallest number that is a multiple of both 5 and 6. The LCM here is 30. Now let's do this one fraction at a time. In the first fraction, 4/5, we need the denominator to become 30. You can get 30 by
posted on October 21, 2014 
math
Once he eats half of the pizza, there is one half left. To find one third of one half, you have to multiply the fractions. 1/2 x 1/3 multiply the numerators together, then the denominators together. 1 x 1  = ? 2 x 3 This is the same as the answer I
posted on October 21, 2014 
math
Once he eats half of the pizza, there is one half left. To find one third of one half, you have to multiply the fractions. 1/2 x 1/3 multiply the numerators together, then the denominators together. 1 x 1  = ? 2 x 3
posted on October 21, 2014 
math
The associative property is about how numbers "associate", or group. 2.5(3x4) can also be grouped as (2.5x3)4. They both still equal 30, no matter how they look because addition and multiplication can be done in any order. The commutative property is about
posted on October 21, 2014 
government
Article I, Section 8, Clause 8 of the United States Constitution, known as the Copyright Clause, empowers the United States Congress "To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive
posted on October 20, 2014 
Math
5 markers cost $4.75. You need to find the unit rate by dividing $4.75 by 5, which is 95 cents each. However, the question asks for the price of FOUR markers, so you have to multiple the price of an individual marker by four. .95 x 4 = $3.80 So your answer
posted on October 20, 2014 
world history
Ooooh, that's a vague question. There are a number of factors that allowed the Europeans to succeed.As far as geography goes, the moderate temperature helped with agriculture and the abundance of water allowed fishing. Many of the world's greatest thinkers
posted on October 20, 2014 
math
He makes 400, and an extra 20 for each plan. If the variable Y is how much she makes, and X is the number of plans, then Y= 400 + 20X Then you just substitute how much she makes for Y, 680= 400 + 20X And solve for X.
posted on October 20, 2014 
chemistry
C: In a galvanic cell the redox reaction is spontaneous and is responsible for the production of electrical energy. In an electrolytic cell, the redox reaction is not spontaneous and electrical energy has to be supplied to initiate the reaction.
posted on October 20, 2014 
planning & implementing for the environment
To prevent is to keep something from occurring, so the only plausible answer would be C.
posted on October 20, 2014 
Math
In decimal values, thousandths are less that hundredths. 20 thousandths are 2 hundredths, not the other way around.
posted on October 2, 2014 
Technology in Day Care
Considering the subject is daycare, the only logical answer is C.
posted on October 2, 2014 
Maths
Probability= action×action P= 8/20 × 7/19 (because one blue is gone) P= 56/380 P= 14/95
posted on September 23, 2014 
Math
Let T be total cost, and N be number of slices: T=$1.50N Substitute different values in for N, and arrange the input and output in a table. N. 1  2  3  4  T. 1.50  3  4.50  6
posted on September 23, 2014 
science Help
Maybe you could ask you teacher before that class starts, saying that the question wasn't clear. Or, if your school is anything like mine, you could go to tutorials in the morning and ask. For now, take a guess so you at least have an answer, and send some
posted on September 23, 2014 
english
The incredible hulk is an archetypal of Mr.Hyde from the book "Dr.Jekyll and Mr.Hyde". Also, any vampire from TV, like twilight, vampire diaries, etc. is an archetypal of the original Dracula by Beam Stoker.
posted on September 23, 2014 
SCIENCE
Because work is force times distance, decreasing distance will subsequently decrease the amount of work done. The answer is B, or the second answer choice.
posted on September 23, 2014 
science
Yes. If they didn't, they would go extinct. All organisms reproduce, either sexually or asexually.
posted on September 23, 2014 
science Help
You didn't state whether the long haired cat is heterozygous or homozygous. It the long haired cat is hetero, then it is 25%. If it is homo, then it is 50%.
posted on September 23, 2014 
FRACTION CONCEPTS
Just try different combinations of prime numbers over each other. I got three sevenths.
posted on September 23, 2014 
Child care
Search "minimum square feet per day care center" on google. The second link, which should be a PDF, states that "the day care home must have a minimum of 35 square feet per child of indoor space". I am not sure if it is accurate, as different links seem to
posted on September 23, 2014 
Science
My way is the easiest way, and will help you when you have numbers too big to put on a number line and count.
posted on September 23, 2014 
Science
You are finding the point exactly between these points. First you must find the distance between these numbers using absolute value. In case you don't know, absolute value signs turn the answer of whatever operation that happened inside them into a
posted on September 23, 2014 
Science! Help
If a parent is homozygous for a dominant trait, than that trait will trump anything the other parent has. There is a 100% chance the child will have dimples, and a 0% chance the child won't. D is correct.
posted on September 23, 2014 
Math
5y^3(x^4) 5(1)^3(2^4) 5(1)(16) 5(16) 80 Substitute the x and y for the values, and put them in parenthesis. This is crucial: you HAVE to use parenthesis or else the exponents and double negative will get messed up. After that, it is just order of
posted on September 23, 2014 
science Help
Think of the recessive alleles as r and the dominant as R. To make sure the child definitely one hundred percent gets that trait, both parents must have the homozygous recessive trait, or the alleles rr. If they both have the alleles rr, then they both
posted on September 23, 2014 
chemistry
1560.4 KJ
posted on January 27, 2013 
College Physics
V1= 25.4 v2=14.6
posted on November 28, 2010