Answer:
20
Step-by-step explanation:
they are proportional
so, since width increases by 4 times, length also increases by 4times
Answer:
8
Step-by-step explanation:
We can start by making an equation. The number we're solving for will be represented by x.
4x-5=27
Add 5 to both sides.
4x=32
Divide both sides by 4.
x=8
There you go! The number you're looking for is 8.
Answer:
11. 8/30
Step-by-step explanation:
add all the marbles
you get 30 marbles
then the probability of yellow being taken out is 8
Your balance is -5.35 because -20.85 + 15.50 is -5.35
So
a^2+b^2=c^2
c=hypotenuse
a^2+b^2=20^2=400
if the permiter is 42 then
p=hypotonuse+side+side
42=20+side+side
subtract 20 from both sides
22=side+side
a+b=22
subtract b from both sides
a=22-b
subsitute for a in equation below
a+2+b^2=c^2
(22-b)^2+b^2=400
b^2-44x+484+b^2=400
2b^2-44x+484=400
divide both sides by 2
b^2-22x+242=200
subtract 200 from both sides
b^2-22x+42=0
factor
(b+/-number)(b+/-number)
to find the numbers, find which 2 number multiply to 42 and add to get -22
the numbers must be neative since same signs multiplied=positive and negative+negative=negative
(b-number)(b-number)
facrors of 42=2,3,6,7,14,21
2,21
3,14
6,7
it's hard to find the number, but the numbers are -19.8882 and -2.11181
(b-19.8882)(b-2.11181)=0
if xy=0 then assume that x and y=0
b-19.8882=0
add 19.8882 to both sides
b=19.8882
b-2.11181=0
add 2.11181 to both sides
b=2.11181
the side legnths are 19.8882 units and 2.11181 units
