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andreev551 [17]
3 years ago
7

What will the length and width be for a perimeter of 15

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
3 0
3 and 5 because 3 times 5 is 15
Natali [406]3 years ago
3 0
There are multiple possible answers for this.  To determine one of the possible answers you would use the formula P = 2<em>l</em> + 2<em>w</em>, where <em>l</em> stands for the length and <em>w</em> stands for the width.  I would choose a number for the length, such as a 4 and substitute it in the formula.  This would make it 15 =  8 + 2w.  Solve the equation by subtracting 8 from both sides and then dividing both sides by 2.  This would give you a width of 3.5 units.  
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antiseptic1488 [7]
Do you have the rest of the question?
6 0
2 years ago
Which would be the best method to use to solve the following equations? Explain your reasoning.
o-na [289]

A. square root property

3x^2-192=0\\x^2-66=0\\x^2=66\\x= -\sqrt{66} or \sqrt{66}

it has one value with x which is x^2 and it cn be easily solved without having to factorise, quadratic formula cant be used as it need ax^2+bx+c=0 format

B. factorising

x^2-x-6=0\\x^2+2x-3x-6=0\\(x+2)(x-3)=0\\x+2=0  and  x-3=0\\x= -2 \\x= 3

i just felt like this was easier to factorise than the other 2 options left

C. Completing the square

x^2-6x-7=0\\(x-3)^2=0\\x= -1\\x= 7

same reason personal preference

D- Quadratic

x^2-17x-7=0\\x=\frac{-(-17)+\sqrt{(-17)^2-4(1)(-7)} }{2(1)} \\x=\frac{-(-17)-\sqrt{(-17)^2-4(1)(-7)} }{2(1)}\\x=17.4\\x=-0.402

the 17 kinda threw me off and i didnt wanna get on factorising or doing completing the square so quadratic formal

7 0
2 years ago
Norma and Albert both clean pools. Each charges a flat fee to clean a pool. Norma cleans 12 pools in 8 hours and earns $270. Alb
Novosadov [1.4K]

Answer:

1.5 per hour : 1.2 per hour

Step-by-step explanation:

The computation of the ratio is shown below:

For norma, the one pool would be

= 12  pools ÷ 8 hours

= 1.5 per hour

And for albert, the one pool would be

= 9 pools ÷ 7.5 hours

= 1.2 per hour

So the ratio between them is

1.5 per hour : 1.2 per hour

4 0
2 years ago
Tell whether the angles are complementary, supplementary or neither m^3=27, m^4=63
Fofino [41]
Supplementary is when it is a straight line that is equal to 180 degrees and complementary is a right angle which is 90 degrees
4 0
2 years ago
Read 2 more answers
How many units<br> above the x-axis<br> is the point<br> located at (9, 6)?<br> pls help
svetlana [45]

Answer:

6 units above the x-axis

Step-by-step explanation:

The pair (9,6) are a set of coordinates that indicate how far away from the origin (0,0) the point is.

The coordinates are written (x,y) where 'x' is how far to the left or right of the y-axis (vertical) the point is. The 'y' is how far above or below the x-axis (horizontal) the point is.

So in this case, the set of (9,6) means that the point is located at 9 units to the right of the origin and the y-axis and 6 units above the x-axis

4 0
2 years ago
Read 2 more answers
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