This is an algabraic problem, so we would use variables:
Length=x
Width=y
The length is four times the width, so
x=4y
Since the equation for perimeter is P= 2(x+y), you would instead substitute 4y for x, and 7 for the perimeter.
7=2(4y+y)
Simplify.
7=2(5y)
7=10y
y=7/10
Since y is 7/10, you would substitute 7/10 into the equation x=4y.
x=4(7/10)
x=14/5
So, the dimensions are 7/10 x 14/5.
Hope this helps!
Answer:
0.41 × 570 = 5.7+228 = 234.
Step-by-step explanation:
If the 100 students are an accurate sample
(not a random sample, but chosen by first asking all 570 students the question and choosing 100 to reflect the proportion, and assuming they didn't change their answers and didn't lie)
then 41% of students have multiple pets so 0.41×570=234 have multiple pets.
2x + 5y=10 .........equation 1
2x + 3y=6 .........equation 2
subtracting eq 2 from eq 1 we get
2y =4
y=2
putting y=2 in eq 1
we get
x=0
Answer:
WRONG ALL
Step-by-step explanation:
3. Should be:
4. Should be:
I hope this helps you :)
Answer:
4, 6, 8, 10, 30
Step-by-step explanation:
