The period is the time it takes for one cycle to complete, or in this case, one breath. Since person A is breathing 5 times faster, the time per breath is 5 times shorter.

6 0

3 years ago

What is the approximate area of the circle? Use A. 17.6 square inches B. 24.6 square inches C. 35.2 square inches D. 98.5 square

anygoal [31]

There should have been an attached image.

Area of a circle is can only be computed when the radius or diameter is provided.

Area of a circle = π r²

Based on the image I saw, the radius is 5.6 inches

A = 3.14 * (5.6in)²
A = 3.14 * 31.36 in²
A = 98.47 in² ⇒ CHOICE D. 98.5 square inches.

6 0

3 years ago

A number is equal to 3 times a smaller number. Also, the sun of the smaller number and 4 is the larger number. The

earnstyle [38]

Answer:

y=3x and y=x+4

that is the third option

Step-by-step explanation:

let the larger number be y and the smaller one be x

From the mathematical statements,

y=3x

Also

y=x+4

3 0

3 years ago

If x2 + mx + m is a perfect-square trinomial, which equation must be true?

noname [10]

<h2>Hello!</h2>

The answer is:

The third option,

$x^{2}+mx+m=(x+2)^{2}$

We are looking for an equation that establishes a relationship between the perfect-square trinomial and the givens notable products.

So, we are looking for a notable product that gives us a value of "m" that is the coefficient of the linear term (x) and it's also the constant term.

- Trying with the two first options, we have:

$(x+1)^{2}=x^{2}+2x+ 1\\\\(x-1)^{2}=x^{2}-2x+ 1$

We can see that for these first two options, the value of m has not the same value for the coefficient of the linear term and the constant term since m is equal 2 and the constant number is not 2.

- Trying with the third option, we have:

$(x+2)^{2}=x^{2}+2*(2*x)+2^{2}=x^{2} +4x+4$

Now, we can see that the value of m is the same for the coefficient of the linear term and the constant term, we can see that m is equal to 4.

So, the correct option is the third option, because

$m=4$

$x^{2} +mx+m=(x+2)^{2}=x^{2} +4x+4=x^{2} +mx+m$

Have a nice day!

4 0

4 years ago

Read 2 more answers