3 years ago

What is the Circumference of 2m

Mathematics

1 answer:

Art [367]3 years ago

3 0

Answer:

The circumference of a circle is equal to Pi π times the diameter d

Step-by-step explanation:

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The height of a football is given by the function h of t equals negative16 t squared plus 56 t plus 3, where h of t is the heigh

kykrilka [37]

Answer:

27 feet.

Step-by-step explanation:

Graph the quadratic equation, then find the point on the graph which aligns with x=3. Y would equal 27.

8 0

2 years ago

Suppose that a population begins at a size of 100 and grows continuously at a rate of 200% per year. Give the formula for calcul

anzhelika [568]

Answer:

100 (+1) x 2^t = 100 (+2et) as we plus and we multiply before squaring the years.

Step-by-step explanation:

You can now work this out as +1 represents the 100% + 200% sum.

3 0

3 years ago

What are the solutions if the equation x^2+4x+4=25

tatiyna

$\text{Use}\ (a+b)^2=a^2+2ab+b^2\\\\x^2+4x+4=25\\\\x^2+2(2)(x)+2^2=25\\\\(x+2)^2=25\iff x+2=\pm\sqrt{25}\\\\x+2=-5\ \vee\ x+2=5\qquad\text{subtract 2 from both sides}\\\\\boxed{x=-7\ \vee\ x=3}$

Other method:

$x^2+4x+4=25\qquad\text{subtracr 25 from both sides}\\\\x^2+4x-21=0\\\\x^2+7x-3x-21=0\\\\x(x+7)-3(x+7)=0\\\\(x+7)(x-3)=0\iff x+7=0\ \vee\ x-3=0\\\\x+7=0\qquad\text{subtract 7 from both sides}\\\boxed{x=-7}\\\\x-3=0\qquad\text{add 3 to both sides}\\\boxed{x=3}$

5 0

4 years ago

If 60% of the students in your class like Burger King, how many students are in your class if 15 students like Burger King?

zloy xaker [14]

Answer:

Step-by-step explanation:

Let x be the number of students in the class

15 is 60% of x

60% of x can be written as 0.6x

15 = 0.6x

Divide by 0.6 on both sides

25 = x

There are 25 students in the class

Hope this helps :)

8 0

2 years ago

Irene made a mistake when she solved this inequality:

rosijanka [135]

She made a mistake in steps 3-4

6 0

3 years ago