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what graph shows the solution for no solution   

I can't tell for sure what that question means, but I'll make a guess?   

An equation with an "i" (to an odd power) in it, cannot be graphed  

because "i" is an imaginary number and doesn't have a value.  

_.

Moving the '7' two positions to the LEFT in a decimal10 number increases its value by a factor of 100   not  10 

Moving the '7' two positions to the right in a decimal₁₀ number increases its value by a factor of 100   not  10 

 6*7*8*9 ==3024

m = 5 (mod 6)

m = 4 (mod 7)

m = 3 (mod 8)

m = 2 (mod 9)

m = 1 (mod 10)

LCM(6, 7, 8, 9, 10)==2520

m ==2520n + 11, where n==0, 1, 2, 3.........etc.

When n=1,  m==2520 + 11 ==2531 - the smallest m under 3024 that satisfies all 5 congruences.

Hello Guest,

Collins Middle School has 248 sixth grade students. If the sixth grade is 40% of the total school, how many students are in the middle school?

248 students in sixth grade - 40%

60% students not in sixth grade - 372 students

60% + 40% = 100 %

248 students + 372 students = 620 students.

So in Collins Middle School there are 620 students in total.

Hope that was helpful. ^^

Straight

x = total students

.4x= 248

x = 248 / .4 = _________

                                      \(25x^2 + 40x - 10 = 0\)
\(25x^2 + 40x + (\frac{40\div2}{5})^2 - (\frac{40\div2}{5})^2 - 10 = 0\)

                   \(25x^2 + 40x + 16 - 16 - 10 = 0\)

                                \((5x + 4)^2 - 16 - 10 = 0 \)

                                                    \((5x + 4)^2 = 26\)

therefore the value of a + b + c is 5 + 4 + 26, which equals 35. 

Hello Guest,

Determine if the graph of the equation below is a parabola, circle, ellipse, hyperbola, point, line, two lines, or empty. Enter the most specific answer.
x^2 + 2y^2 + 6x + 8y - 121 = 0

It is an elipse. 

Hope that was hepful. ^^

Straight

the value of the 7 in 735208 is "700000"
the value of the 7 in 137342 is "7000"

7000 x 10 ≠ 700000

therefore this isn't correct. 

Hello Melody,

12 1/2 divided by 3 3/4   plez help god bless you 

or I am doing it  :

12 1/2 = 25/2 and 3 3/4 = 15/4,

so we got 25/2 and 15/4.

Now expand 25/2 to 50/4 - it is still the same value like 25/2.

Now divide 50/4 by 15/4 and that is equal to \(3.\overline3\) .

So the answer is \(3.\overline3\) .

Hope that was helpful. ^^

Straight

Hello Guest,

Sovle 16^x - 25*4^x + 24 = 0.

There is only one solution for whole numbers, namely x = 0.

So the solution is x = 0.

Hope that was helpful. ^^

Straight

thank u so much!

Hello Guest,

Simplify the expression: ab^2 + 3a^3b - 8ab^2 + 4a^3b^2 + 2a^3b

The answer here : \((ab(4a^2b-7b+5a^2))\) .

Hope that was helpful. ^^

Straight

Hello Guest,

8(x+15)=12x

im confused on how to start it.

8(x + 15) = 12x

(8x + 8 * 15) = 12x

8x + 120 = 12x

(8x - 12x) + 120 = 12x -12x

-4x + 120 = 0

(120 - 120) -4x = -120

-4x = -120

\(\frac{-4x}{-4}=\frac{-120}{-4}\)

\(x = \frac{-120}{-4}\)

\(x = \frac{-30}{-1}\)

\(x = 30\)

So x = 30 is the right answer. 

Hope that was helpful. ^^

Straight

this is 8th grade math somebody please answer abeggg

Hello Guest,

han says that the value of the 7 in 735,208 is 10 times the value of the 7 in 137,342 is this correct??

Multiply 7 by 735,208 and that's equal to 5,416,456 and I do know that this isn't correct because 5,416,456 is not ending with 0 - a whole number multiplied by a whole number is a whole number and the solution 5,416,456 divided by 10 is equal to 541,645.6 and that is not a whole number.

Hope that was helpful. ^^

Edit: Grammatical errors have been corrected.

Straight

Hello Guest,

If a, b, and c are positive integers satisfying ab + c = bc + a = 13  and ac + b = 41, what is the value of a + b + c?

There are 2 solutions for \(a , b , c \in \mathbb{Z}\) , namely:

S1: a = 5 ; b = 1 ; c = 8 and

S2: a = 8 ; b = 1 ; c = 5 .

The value (a + b + c) for S1 and btw. S2 is (5 + 1 + 8 =) 14.

The answer is 14.

Hope that was helpful. ^^

Straight

Hello Guest,

Speed: \(\frac{Distance}{Time}\)

Now put in: \(\frac{1.4}{2.8}\)

So his speed is 0.5 miles per minute.

Straight

sure, thanks a lot!

If f(x) is a function whose domain is [-25,5] and g(x) = f(x^2), then the domain of g(x) is an interval of what width?

Hello Guest,

the domain of g(x) is [0,625].

  !

I have commented on Heureka's original answer:

Thanks for your answer Heureka,

Melody I found one of the originals it is https://web2.0calc.com/questions/an-advanced-quadratics-problem however it is wrong but I don't see what went wrong in the work. 

you can approach this question multiple ways. 
start by finding the equation of this graph. you can do this in vertex or factored form for ease:

y = a(x + 1)² - 1    or    y = a(x)(x + 2)

now pick a point and substitute it in to find the dilation factor, a. 

(1, 3)  
3 = a(1 + 1)² - 1    or    3 = a(1)(1 + 2)
3 = 4a - 1                     3 = 3a
4 = 4a                          a = 1
a = 1

y = 1(x + 1)² - 1            y = 1x(x + 2)
y = (x + 1)² - 1              y = x(x + 2)

now you just convert the equation into standard form by expanding: 

y = (x + 1)² - 1       or    y = x(x + 2)
y = x² + 2x + 1 - 1         y = x² + 2x
y = x² + 2x

therefore a + b + c = 1 + 2 + 0
                               = 3.