Answer:
let total no. of red marbles be x and blue marbles be y.
then according to first case
x + y =36
or,x=36 -y.....(i)
in case second
x/5 =y/4
or,x=5y/4......(ii)
then from equation i and ii, we get
36-y = 5y/4
or, (36-y)4 = 5y
or, 144 -4y =5y
or, 144 = 5y + 4y
or, 144 = 9y
or, 144/9 =y
or, y = 16
again x = 36 -y
here , y =16
so,
x= 36 -16
x= 20.
hence total no. of red marbles is 20 and blue marbles is 16 .
If Carls removes 1 blue marble from bag, there will be 15 marbles in the bag,
20÷5 is not equal to 15 ÷3 .
correct ratio of red and blue marbles is 20÷15=
4/3.
Answer: Below
Step-by-step explanation:
So we can start off by solving this equation.
(x + 3)² = x² + 6x + 9
5(x² + 6x + 9) = 5x² + 30x + 45
5x² + 30x + 45 - 8 = 5x² + 30x + 37
Going off of this, we can already see that A is our answer.
Answer:
Step-by-step explanation:
Hello,
we can write
it means that p+q = -5 and pq=3
And then we are looking for b and c so that
So
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
Answer:
D
Step-by-step explanation:
Under a reflection in the x- axis
a point (x, y ) → (x, - y )
That is the x- coordinate remains unchanged while the y- coordinate is the negative of the original y- coordinate.
Given
A(- 3, 5 ) → A'(- 3, - 5 )
B(2, 8 ) → B'(2, - 8)
C(- 4, - 5 ) → C'(- 4, 5 )
The rule for reflection in the x- axis has been applied here → D