Where the picture or numbers at?
Answer:
12
Step-by-step explanation:
write it out:
3/7 x x/28
cross-multiply and solve:
3*28 and 7x
3 x 28 = 84
make an expression:
84 = 7x
solve the expression:
7x/7 = 1
84/7 = 12
x =12
Answer:
x² - 25
Step-by-step explanation:
Given:
(x-5)(x+5)
Find:
Product
Computation:
(x-5)(x+5)
(a+b)(a-b) = a² - b²
(x-5)(x+5) = x² - 5²
(x-5)(x+5) = x² - 25
Alternate:
(x-5)(x+5)
x² + 5x - 5x - 25
x² - 25
Answer:
-10
Step-by-step explanation:
I dont want you to "Literally die" so heres the explaination:
The absolute value mean always a positive number. So if a number is positive and it has the absolute value symbol next to it then it is positive. If the number is negative than it become positive. With that say, we can began to solve our linear equation.
We shoudl first isolate the variable so let's subtract the number 8 from BOTH SIDES. So now we should have -24=-12(k/5)
Now we will use the disributive property. this will give us:
-24=(-12k/5)
BUT WAIT!! THE ABSOLUTE VALUE RULE MUST BE APPLIED!!
Therefore it should be -24=12k/5
Now we can just solve this regularly:
Keep reading if you don't know how to solves linear equations.
Multiply 5 to both sides:
-120=12k
k=-10
