A-length
b-width
perimeter of rectangular floor: 2a+2b=204
<span>The length is two times the width: a=2b
</span>2a + 2b = 204
2*2b + 2b = 204
6b = 204|:6
b = 34
a=2b=2*34=68
a=68->length
b=34->width
Answer:
Step-by-step explanation:
we have
we multiple both sides by (4a)
The delta = 11^2 - 4*4*(-20)= 121 + 320= 441= 21^2
These 2 solutions are:
Solution: - 4 , 5/4
But maybe you wrote:
So a = -40
P.S: Pay attention to using parentheses
Answer:
3,3 6,3 3,9 6,9
Step-by-step explanation:
follow the dot to the number
What I did to start with was to find the lowest number that both 12 and 10 could divide into, that number is 60.
I know 60 divided by 12 is 5 and I know that 60 divided by 10 is six.
Then I took 5 and multiplied it by 3 and got 15. I did this step because you need 5 packages of cups and each package cost 3 dollars.
Next I took 6 and multiplied it by 5 and got 30. I did this step because you need 6 packages of plates and each package cost 5 dollars.
You would then take 30 dollars and 15 dollars and add them together to get your total.
The answer is 42 dollars.
