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3 years ago

The side of a square is m-3. Find the perimeter.

Mathematics

1 answer:

bagirrra123 [75]3 years ago

6 0

Answer:

4m-12

Step-by-step explanation:

since the perimeter of a square is the addition of all four equal sides, therefore:-

P=(m-3)+(m-3)+(m-3)+(m-3)

P=m-3+m-3+m-3+m-3

collect like terms

P=m+m+m+m-3-3-3-3

P=4m-12.

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Kelly and Greta are asked to write an equation for the scenario below. "One person was able to plant 4 trees in the same amount

Alina [70]

Answer:

$y=\dfrac{1}{4}x$

Kelly is correct.

Step-by-step explanation:

One person is able to plant 4 trees

Let x be the number of people

y be the number of trees

The situation is represented by

$1x=4y\\\Rightarrow y=\dfrac{1}{4}x$

5 people are able to plant 20 trees

$5x=5(4y)\\\Rightarrow 5x=20y\\\Rightarrow y=\dfrac{5x}{20}\\\Rightarrow y=\dfrac{1}{4}x$

So, the situation is represented by $y=\dfrac{1}{4}x$

Hence, Kelly is correct.

6 0

3 years ago

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RideAnS [48]

2,650 meters per hour

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2 years ago

Determine if the relationships are linear and if so are they proportional

Tanzania [10]

Y=2-x^2
Vertex ( 0, 2 )
Focus : ( 0, 7/4 )
Axis of symmetry : x = 0
Directrix : y = 9/4

8 0

2 years ago

What are the zeros of the function? h(x)=x^3−2x^2−3x

maksim [4K]

To find the zeroes you make the function equal to zero and then solve.
$0=x^3-2x^2-3x$
Then factor out the x to get a quadratic inside the parentheses.
$0=x(x^2-2x-3)$
Factor the inside quadratic formula.
$x(x^2-2x-3)=x((x-3)(x+1))$
Lastly, use the zero product property to solve.
$x*(x-3)*(x+1)=0$
$x=0,x=3,x=-1$

3 0

3 years ago

Quick help. Will Mark as Brainliest if my laptop stops acting up.

Dimas [21]

Vertex is now at (-1,5)

for
y=a(x-h)^2+k
vertex is (h,k)
so veertex is (-1,5)

y=a(x-(-1))^2+5
y=a(x+1)^2+5
a is a constant, we will asssume that it is 1 because all the choices have 1

y=1(x+1)^2+5
y=(x+1)^2+5

2nd option

8 0

3 years ago