Answer:
see explanation
Step-by-step explanation:
Given the 2 equations
2r + 3s = - 5 → (1)
6s = 2r → (2) ( divide both sides by 2 ), then
r = 3s
Substitute r = 3s into (1)
2(3s) + 3s = - 5
6s + 3s = - 5
9s = - 5 ( divide both sides by 9 )
s = -
Substitute this value into either of the 2 equations and evaluate for r
Substituting into r = 3s, then
r = 3 × - = -
Solution is r = - and s = -
Answer: So I think its either c or a. I have not did this in a while so it might be incorrect.
First Question Answer:
<em>a = 4x^2</em>
<em>b = 3</em>
Next Question Answer:
Factoring 8q6r3+27s6t3 =
(4x^2 - 3)(16x^4 + 12x^2 + 9)
in simpler words it's<em> Option B. </em>
Answer:
5/14
Step-by-step explanation:
The total number of cards is 8
There are 5 blue cards
P(1st card is blue) = blue/total = 5/8
We take away a blue card
The total number of cards is 7
There are 4 blue cards
P(2nd card is blue) = blue/total = 4/7
The probability of blue blue is P(blue blue ) =
P(1st card is blue)*P(2nd card is blue) =
5/8* 4/7
20/56
We can divide the top and bottom by 4
5/14
3/4+5/6 divided by 2/3 is 8/4 or 2
Do 5/6 divided by 2/3 first to get 5/4
then use 5/4 to +3/4 and the answer is 8/4 or 2