4. (x+1)(3x-5)
5. 4(x-2)(2x+1)
Answer:
n= 3/5
Step-by-step explanation:
This can be easily done by cross-multiplying(and also beneficial to get rid of fractions):
(5n+1)(2) = 1(8)
10n +2 = 8
10n = 8-2
10n=6
n = 6/10
Simplify:
n = 3/5
Hope this helps!
Answer:
11.5 miles
Step-by-step explanation:
Total 60 miles includes running and biking
Let's find total run time.
4 times a week for 3 1/2 miles per run, so that is:
4 * 3.5 (3 1/2 means 3.5) = 14 miles
Total Run = 14 miles
From 60 miles, she runs 14 miles. So biking is 60 - 14 = 46 miles
4 times per week, that means each time:
46/4 = 11.5 miles of biking each day
Hence,
she bikes 11.5 miles per evening
Answer:
<h2>I. 336 ft²</h2>
Step-by-step explanation:
We have
two right triangle with legs 6ft and 8ft
one rectangle 8ft × 12ft
one rectangle 6ft × 12ft
one rectangle 10ft × 12ft
The formula of an area of a right triangle:
a,b - legs
Substitute:
The formula of an area of a rectangle:
l,w - length, width (dimensions of rectangle)
Substitute:
The Surface Area:
Circumference is normally used for circles and is asking for the outer edge of the circle while area is the inner part of the shape formulas for circumference is 2 x PIE x radius
While area is length x breadth for most shapes or PIE x (radius)squared so both have to do with measurements and differ in what the measurements are focusing on
