Hello,
Let's work in dm and dm².
Let's a the shortest side
2a+b=9
ab=10
==>2a²-9a+10=0
==>(a=5/2 and b=4) or (a=2 and b=5)
The rectangle is 25 cm * 40 cm
or 20 cm * 50 cm
Proof:
(25,40)
2*25+40=90 (cm)
25*40=1000 (cm²)
(20,50)
2*20+50=90 (cm)
20*50=1000 (cm²)
Answer:
x = 40
Step-by-step explanation:
So a triangle is <u>180 degrees</u>
and thats a right triangle = 90 degrees
you have three corners: 90, 50 & x
90 + 50 + x = 180
140 + x = 180
subtract 140 from both sides
x = 40
hope this helps
like this up !
F(x)=x^2+7x+c
I hope this help!!!!
Answer:
Part A is 210 I beleive because .27 * 705 is 190.08
Part B is $140 because .18 * 705 is 126.72
Step-by-step explanation:
Answer: She needs to walk 5 miles an hour
There's two numbers 2.5 miles and 0.5 hours, you divide that, and you get the number 5, so that means, 5 miles an hour