The domain is all the ones under the x and the range are the numbers under the y (that goes fo any question like that)
Answer:
(2x-5y)^2
Step-by-step explanation:
4x^2 - 20xy + 25y^2=
(2x) ^2 - 2(2x)(5y)+(5y)^2 =(*)
(2x-5y)^2
(*) A^2 - 2AB+B^2 =(A-B)^2
Answer:
19.) must add 9.02 to both sides the answer will be n= 12.87
20.) must subtract 31.53 from 62.4 but add a zero behind the 4 in the number 62.4 and the answer will be r=30.87
22.) Jake needs about 2.21 meters of wood to complete the school project.
Step-by-step explanation:
The answer is 75% Proportions can help with this :)
Answer:
length is 20 and the width is 5
Step-by-step explanation:
so Area is 100
Area = width * length
legth = 4 * width
This means:
Area = width * 4 width => Area = 5 * width
We know that area is 100 so:
100 = 5 * width
that means width = 20, but wait didn't I say that the length is 20? Yes, remember we said length = 4 * width at the beginning, so <u>length = 20</u>.
Now we can easily calculate width as width is 4 times smaller than length, so:
<u>width = 20/4 => 5</u>
We can also test if this is correct by simply using the formula to calculate rectangle. So 5 * 20 = 100, correct!
