Answer:
the first option = 437.4 sq.ft
Step-by-step explanation:
the formula of an are of circle =
A = (pie) (radius) ^2
so fill it, (3.142 × 11.8)^2
and you will got the answer = 437.44
and round it to nearest tenth = 437.4
done!
Step-by-step explanation:
using elimination method because this is a simultaneous equation
3×x+6×y=111
x+y=27
1×[3x+6y=111]
3×[x+y=27]
3x+6y=111—equation 1
3x+3y=81—equation 2
substrate equation 1 from equation 2
3y=30
divide both sides by 3
y=10
substitute 10 for y in equation 1
3x+6y=111
3x+6(10)=111
3x+60=111
3x=111-60
3x=51
divide both sides by 3
x=17
Answer: Common difference
Step-by-step explanation:
You keep subtracting the lower number from the higher number next to it in the sequence. If you keep getting the dame difference, that is the common difference, and the sequence is arithmetic
To solve this problem you must apply the proccedure shown below:
1. You have the following quadratic equation, which is given in the problem above:
<span>2y^2+6y-8=0
2. So, to solve it, you can use the quadratic formula, which is:
y=(-b</span><span>±</span>√(b²-4ac))/2a
<span>
a=2
b=6
c=-8
3. When you susbtitute these values into the formula, you obtain:
y1=-4
y2=1</span>