Answer:
$121.82
Step-by-step explanation:
Okay, this is kind of complex, so let's go step by step.
First, we want to find the area of the rectangular lawn - we can do this by multiplying the length and width. The length is 100 and the width is 45 so 
m² is the area of the rectangle.
However, there are 3 ponds in which the grass seeds will not be going - so we need to find the area of all 3 of these circles and subtract it from 4500 (our rectangle area).
The area of a circle is represented by the formula 
The diameters are given here, which is double the radius, so to find the radius of each circle let's divide the diameters by 2.
First circle's radius: 
Second circle's radius: 
Third circle's radius: 
Now let's find the area of each circle.
<em>First Circle</em>: 
<em>Second Circle</em>: 
<em>Third Circle:</em> 
Adding all of these values gets us 412.125.
Now we can subtract from this from 4500 to get us 4087.875
If the grass seeds that cost £1.49 cover 50m² each, then we need 
bags.
Each bag costs £1.49, so the total cost is 
Hope this helped!!
A.
To find a percentage of something, multiply by it's decimal. so 15% is 0.15
In c - 0.15c Louisa is taking the normal cost of a movie subscription and subtracting 15 percent of it off. hence the 15% discount.
We can rewrite this by skipping the subtraction part. If she's getting a 15% discount, you could say she is only paying 85% of it's normal price (100% - 15%). so put 85% in decimal and get 0.85c
Both expressions involve the same discount and both show that she is paying less than full price.
B.
They tell you the width is 16 feet. The length is 4% more than that. in other words the length is 104% the width. In decimal 100% is 1 and 4% is 0.04; 1 + 0.04 is 1.04.
1.04 * 16 = 16.64, which is the length.
Area (assuming the room is a rectangle) is length * width. so 16 * 16.64 whatever that equals is your area.
Answer:
The answer is that Regina is absolutely right
Step-by-step explanation:
Hello!
The answer is that Regina is absolutely right, this is because the fundamental theorem of algebra states that every polynomial equation has the same number of solutions as its highest exponent, for this case it is 2. Therefore, there are two values of X that cause the equation to result in zero
Answer:
The answer is 7
Step-by-step explanation:
2 negative numbers would equal a positive number.
so,Bascially it's like your just taking 8 away from 1.
The equation in given as ;
2y = -3x + 1
This can be written as ;
y= -3/2 x + 1/2
This means the equation has a gradient of -3/2
Let this slope , be , ---------m1
For perperdicular lines , the product of their slopes = -1 .This means if the other line has a gradient of m2 then : m1 * m2 = -1
So from the answers :
i) y= 2/3 x - 1 the slope is 2/3
m2 = 2/3
m1 * m2 = -1 -------check the if this is true by using the two values of gradient as;
-3/2 * 2/3 = - 1 ------ This is true-----equation i
II.
-2x + 3y = -5
3y = 2x -5
y= 2/3 x -5/3 -----m2 here is 2/3
m1*m2 = -1
-3/2 * 2/3 = -1 -----this is true , so ----equation ii
iii)
2x + 3y = 2
3y = -2x + 2
y= -2/3 x + 2/3 -----m2 = -2/3
m1*m2 = -1
-3/2 * -2/3 = 1 -----this is not true,,,equation iii is not perpendicular to our equation.
so, equation i and ii are perpendicular to our equation .
Answer : B i and ii only
