Monday
September 22, 2014

Posts by Mia


Total # Posts: 846

math
On the third line you have the +25 and -25 they got rid of the -25 To do this they removed it from the bracket to the outside of the function But since it was in the bracket you cannot forget to multiply by the 3 that was on the outside This made the -25 a -75....and when you ...
September 21, 2014

chemistry
an x-ray photon of wavelength 0.989nm stricks a surface. the emitted electron has a kinetic energy of 969 eV.what is the binding energy of the electron in kj/mol?
September 20, 2014

Science
i didnt put the coefficients so its not balanced. I just wanted to show your the products
September 19, 2014

Science
C2H4 + O2 --> CO2 + H2O
September 19, 2014

algebra 2
The zeros are always the opposite sign of their value in the factors. Example: (x-2) The value in this factor is -2 but when you solve for x to find your zero it would be +2.
September 19, 2014

Math
Plug in (x-1) everywhere you see an x 4(x-1)^2 + 3(x-1)-3
September 19, 2014

Science
It should be A because the offspring should get one allele from each parent Say the yellow is YY and the green is gg I put it lowercase because I assumed it was recessive ..g...g Y Yg Yg Y Yg Yg
September 19, 2014

Science
Yes the dominant trait is usually what shows up in the phenotype.
September 19, 2014

Science
Sure what is it?
September 19, 2014

Science
I believe its C because chromosomes are made of DNA. And DNA carries genetic information.
September 19, 2014

Math
Lets evaluate D 6y-2=2(y-1) Now distribute the 2 6y-2=2y-2 Add two to both sides....in this case they cancel each other. Now we have 6y=2y The only number that will make this equal is 0. SO y=0 here. So D cant be the answer.
September 19, 2014

Math help
A. 20-x=x change this to 20= x+x What same two numbers add to 20? B. 20-x-6=0 Combine like terms 20 and -6 Now you have 14-x=0 Now solve for x C. x+4=3+x+1 Combine like terms 3 and 1 x+4=4+x In this problem the equations are the same. So there are an infinite amount of numbers...
September 19, 2014

Math
The problem is a quadratic function so that tells you right there that it has symmetry. Now you just have to find where. Because the problem says x= and not y= our problem with be rotated to the right Its rotated to the right because y can be any value whether positive or ...
September 19, 2014

Pre-Calc Help!
Yes
September 19, 2014

Pre-Calc Help!
First factor x^2-8x+15 You should get (x-5)(x-3) Now set each factor equal to zero and solve for x x-5=0 x-3=0
September 19, 2014

Math
x^4=625 To get x by itself you have to find the 4th root of 625. If you put this in a calculator in will give you 5. So your answer will be +5,-5 You have the put both the negative and positive 5 because the exponent is an even number
September 19, 2014

Math Precal/Trig
Before trying to distribute first simplify the problem
September 18, 2014

Algebra 2
5√7/√6 Multiply by √6/√6 to remove the radical from the denominator (5√7)/√6 * √6/√6 What does this give you?
September 18, 2014

Geometry
No it shouldnt be that small
September 18, 2014

Geometry
You will have to use the distance formula. Do you know what the formula is?
September 18, 2014

math
24/25 correct is a 96% score If she only did half as good then she got 96/2=48% on the second test She also got twice as many problems correct. 24*2=48 In this problem the number of problem she got correct is also her percentage. 48 divided by what number will give her a score...
September 18, 2014

Geometry Please help
Yes
September 18, 2014

Geometry Please help
First draw out your triangle . It gives you the length of two of the side Vertices (-2,9) and (-2,-3) have the same x values so the line is straight up and down. Find the distance between the y values to find the length of that side Vertices (-2,-3) and (7,-3) have the same y ...
September 18, 2014

Math Gr 12
Set equal factor to ≥ o (4x+1)≥0 (2-x)≥0 Now solve for x on each one
September 18, 2014

math
*there
September 18, 2014

math
It states that the are 1550 MORE ground crew members Because it says more you will add to 665 not subtract
September 18, 2014

math
Put all the sides in terms of x. X represents the longest side side x side y=(1/3)x side z=x-13 The perimeter is 106 which is the sum of all the sides. x+(1/3)x+(x-13)=106 Solve for x Then it will be easy to find the other sides
September 17, 2014

Algebra
well you already know the greater the width is the higher the temperature Now you just to put the widths in order. Because they all have different denominators you are going to have to find the least common denominator. 25,50,100,20,5= these are all factors of 100 So rearrange...
September 17, 2014

math
the ratio of tenants that own cats to tenants that own fish is 4 to 1 ..that is 4 times greater ? to 5 So if 5 own fish what would the of cat owners have to be to have the same ratio
September 17, 2014

Math
First change the mixed number to an improper fraction.
September 17, 2014

math
5n is correct it would be your score I guess you could put s=5n S meaning your total score
September 17, 2014

Algebra 2
To find the slope the equation must be in y=mx+b form To do this rewrite the equation with y by itself 4x+ky=-1 ↓ 4x+ky+1=0 ↓ 4x+1= -ky ↓ (4x+1)/-k=y Now y is by itself Now separate the equation with -k and the denominator 4x/-k + 1/-k =y is in y=mx+b form 4...
September 17, 2014

MATH
Are you solving for x?
September 16, 2014

Algebra help
rewrite the problem 7x^2=8x ↓ 7x^2-8x A=7 B= -8 C=0 Plug values in the quadratic formula
September 16, 2014

Need Help with Math
1/2 * 5/12 = 5/24 1/4 *5/6 = 5/24 1/3 * 5/8 = 5/24 I assumed it could have been random fractions.
September 16, 2014

math
x^3-18x^2+80 factors into (x+2)(x^2-20x+40)
September 16, 2014

Sixth Grade Simplest Form
Yes that is correct
September 16, 2014

Sixth Grade Simplest Form
yes
September 16, 2014

Sixth Grade Simplest Form
Since he tripled the recipe all you have to do is is multiply by 3 A. Oranges (1/2)*3=? Apples (3/5)*3=? Blueberries (1/4)*3=? Peaches (2/3)*3=? B. You have to change the mixed number back to a regular fraction. Do you know how to do this?
September 16, 2014

math
Im sorry but could you retype this in English
September 16, 2014

math
10m describes the height of the bridge from the ground
September 16, 2014

math
w ww.pitt.edu/~medart/image/glossary/rise.jpg This should help
September 16, 2014

Math
3*4=12 3=number of colors she can choose 4=number of colors to pick from
September 16, 2014

Algebra
Your answer is correct just make sure you put "{}" instead of parentheses
September 16, 2014

math
beginning ratio 5:7 Girls=30 Boys=42 ending ration 3:4 Boys=48 48/4=12 12*3=36 Girls=6 36-30=6 6 more girls joined
September 16, 2014

maths
What is the question?
September 16, 2014

6th Grade Math
Yes A is correct For B just find if 4 bags will give you 3 more pounds since you already have 10. To do this multiply (5/8) by 4 to see how many pounds it will give you. (5/8)*4=2.5 Four more bags Will Not cover the extra soil needed.
September 16, 2014

math
a=72 b=84 c=99
September 16, 2014

Math
3(y-3)=2y-9+y Distribute the 3 3y-9=2y-9+y Combine the like terms that are on the right side "2y" and "y" 3y-9=3y-9 You can stop right here because the equations are the same on both sides. This tells you that no matter what y is it will be equal on both ...
September 16, 2014

Math
2x-6=2x Subtract 2x from both sides in order to get your x variables on 1 side 2x-6=2x -2x -2x What you do to one side you must also do to the other. This leaves you with -6=0x Because it says 0x there is no solution
September 16, 2014

Math
Okay you first step is first when you multiply it you will get 2x-6=2x After this you are trying to get x by itself. What would you do?
September 16, 2014

Math
Can you show me how you came up with that answer? I like to see a person's though process. It helps me to assist you better.
September 16, 2014

Coordinate Algebra
You can replace y with h since it says an equation for the flower's height "h". The equation is still the same though
September 16, 2014

Coordinate Algebra
y=1.5x+7 1.5x = represents how much the seedling grows in x amount of weeks 7 = is the height before it was planted. It is constant. It is also your y-intercept because the equation is in y=mx+b form in which b is the y-intercept
September 16, 2014

Coordinate Algebra
The simplest to approach this problem would be to find the distance between the first x and y values. 6-(-2)=? Use the number found and subtract it from your second y value "9" 9-?=?? You subtract because the x value is less than the y value as shown in the ...
September 16, 2014

math
12:(12+15+9) 12=number of action dvds (12+15+9)= total number of dvds Did I help you get started?
September 15, 2014

math
4 and 6 6-4=2 6^2-4^2 36-16=20
September 15, 2014

math
Is the problem asking to consider both how many miles driven and how many gallons of gas purchased to find the total cost?
September 15, 2014

Algebra1
You're welcome :)
September 15, 2014

Algebra1
I was adding 9 to both side in order to solve for x. What you do to one side you must also do to the other.
September 15, 2014

Algebra1
-3x-9=-3x-8 +9 +9 ↓ -3x = -3x+1 +3x +3x 0x≠1 No Solution Do you see how I got this?
September 15, 2014

Algebra1
You should have gotten this when you multiplied -3x-9=-3x-8
September 15, 2014

Algebra1
Then you solve for x
September 15, 2014

Algebra1
First distribute the -3 into(x+3) and he -3 into(x+1)
September 15, 2014

Math (Ms. Sue! Anyone!)
Okay so add -14.8+22.6=?
September 15, 2014

Math (Ms. Sue! Anyone!)
Let's start with the first question if it says the temperature increase what does that tell you to do? (add,subtract,multiply, or divide)
September 15, 2014

Physics
acceleration=force/mass
September 15, 2014

Math Problem (please help)
okay so what did you get for our answers?
September 15, 2014

Math Problem (please help)
(x-7)^2 shouldnt be x=7 because you have the squared
September 15, 2014

Math Problem (please help)
Okay well the problem is set to make it easy for you. Since it is broken up into factors all you have to do is set each one equal to 0. x+3=0 (x-7)^2=0 Solve for x.
September 15, 2014

Math Problem (please help)
is the (x-7) squared?
September 15, 2014

Math-PLEASE help me
2.78-(-2.78)=5.56 You are not trying to find the distance from 0. That is what the absolute value is. It tells that the absolute value is 2.78. You want the total distance between -2.78 and 2.78. You found this to be 5.56 To check your answer you would add -2.78 +5.56=2.78 Did...
September 15, 2014

Math-PLEASE help me
Depending which way you're looking from 2.78 to -2.78 would be -5.56 because you are moving down(left) the number line And -2.78 to 2.78 would be 5.56 because you're moving up(right) the number line. It might be simpler just to leave it positive. But your math was ...
September 15, 2014

Math-PLEASE help me
The absolute value is given and it tells you that the original number is negative. So the original number is -2.78 All you have to do is find the distance between -2.78 and 2.78
September 15, 2014

math, algebra
In order for 1/ab to be positive meaning it is greater the zero the denominator must be positive since the numerator is positive. Since both a and b are in the denominator to get a positive number a&b both have to be positive or they both have to be negative. Did I explain ...
September 15, 2014

math, algebra
I think you posted this question already but Ill answer again. In order for 1/ab to be positive meaning it is greater the zero the denominator must be positive since the numerator is positive. Since both a and b are in the denominator to get a positive number a&b both have to ...
September 15, 2014

math, algebra
*by
September 15, 2014

math, algebra
it would be positive when a is a negative number A negative divided b a negative is positive.
September 15, 2014

algibra1
You could use the guess and check method
September 15, 2014

Pre-Calculus/Trigonometry
in y=mx+b form y=y value m=slope x=x value b= y-intercept
September 15, 2014

Pre-Calculus/Trigonometry
The equation they gave you is in slope intercept form and you already know the slopes are the same. You just need to know the slope of the given equation.
September 15, 2014

Pre-Calculus/Trigonometry
You have the name of the form write but that equation is point slope form Slope intercept form is y=mx+b
September 15, 2014

Pre-Calculus/Trigonometry
Yes and in order to know the slope what form does an equation have to be in?
September 15, 2014

Pre-Calculus/Trigonometry
I didnt mean to type does
September 15, 2014

Pre-Calculus/Trigonometry
If two lines are parallel what does must be true for their slopes?
September 15, 2014

math
Do you know how to find the least common denominator
September 15, 2014

Math
d=√(x2-x1)^2+(y2-y1)^2 The 2 and 1 inside the parentheses are subscripts
September 15, 2014

Math
do you have the distance formula
September 15, 2014

alg 2
You can separate the equation into two different ones -9 ≤ y+5x AND y+5x ≤ 14 Then solve for y in both equations
September 15, 2014

alg 2
okay first you will need to put the equation in y=mx+b form
September 15, 2014

alg 2
-9 ≤ y+5x ≤ 14 is this the correct set up of the problem
September 15, 2014

alg 2
What are you solving for...y or x?
September 15, 2014

Social Studies
Yes so do you understand why that is the correct answer?
September 15, 2014

Social Studies
Wages are not a price Think of the relationship between wages and inflation.Inflation is the increase in prices of goods. If goods and services cost more...what will have to happen to wages? Do the same for interest rates...think of their relationship. If one does one thing ...
September 15, 2014

math
Clue: what number is between 2 and 4?
September 15, 2014

Math
There is more than one possible answer but I just gave you the closest to 700,000
September 15, 2014

Math
711,311
September 15, 2014

math
Well to keep it simple you could break down the numerator so it doesn't look as complicated For example: (50x^3+15x^2-10)/5 This can be broken down into 50x^3/5 + 15x^2/5 - 10/5
September 15, 2014

math
Are you simplifying or solving for x. There arent any instructions
September 15, 2014

Math
You could use the rise over run method Find the difference between the first endpoint and midpoint x values which in this case would be +2 because(5-3=2) Then do the same for their y values(-11-6)=? After that add the difference in x values to the the midpoint x value(5+2)= ...
September 15, 2014

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