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3 years ago

12

Which of the following is most likely the next step in the series?

1 answer:

tankabanditka [31]3 years ago

8 0

Answer:

D

Step-by-step explanation:

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The recommended dosage of a drug for a pediatirc patients is 200 mg per kilograms of a patient’s weight. If Janine weighs 62 Ib,

Sloan [31]

First, we need to convert those lbs to kilograms. One kilo is equal to about 2.2lbs, so:

1kg 2.2lbs
x kg 62lbs

x=62lbs*1kg divided by 2.2lbs
x=28.1kg

The dosage is 200mg by kilogram, and the patient weighs 28.1kg, so we multiply:

28.1kg*200=5620mg

Hope that helped!

8 0

3 years ago

HELP SOMEONE PLEASE I DO NOT UNDERSTAND ILL GIVE YOU 50 POINTS JUST HELP ME PLEASE !!!!

Alona [7]

Answer:

B

Step-by-step explanation:

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5 0

3 years ago

You have a wire that is 20 cm long. You wish to cut it into two pieces. One piece will be bent into the shape of a square. The o

Aleksandr [31]

Answer:

Therefore the circumference of the circle is $=\frac{20\pi}{4+\pi}$

Step-by-step explanation:

Let the side of the square be s

and the radius of the circle be r

The perimeter of the square is = 4s

The circumference of the circle is =2πr

Given that the length of the wire is 20 cm.

According to the problem,

4s + 2πr =20

⇒2s+πr =10

$\Rightarrow s=\frac{10-\pi r}{2}$

The area of the circle is = πr²

The area of the square is = s²

A represent the total area of the square and circle.

A=πr²+s²

Putting the value of s

$A=\pi r^2+ (\frac{10-\pi r}{2})^2$

$\Rightarrow A= \pi r^2+(\frac{10}{2})^2-2.\frac{10}{2}.\frac{\pi r}{2}+ (\frac{\pi r}{2})^2$

$\Rightarrow A=\pi r^2 +25-5 \pi r +\frac{\pi^2r^2}{4}$

$\Rightarrow A=\pi r^2\frac{4+\pi}{4} -5\pi r +25$

For maximum or minimum $\frac{dA}{dr}=0$

Differentiating with respect to r

$\frac{dA}{dr}= \frac{2\pi r(4+\pi)}{4} -5\pi$

Again differentiating with respect to r

$\frac{d^2A}{dr^2}=\frac{2\pi (4+\pi)}{4}$ > 0

For maximum or minimum

$\frac{dA}{dr}=0$

$\Rightarrow \frac{2\pi r(4+\pi)}{4} -5\pi=0$

$\Rightarrow r = \frac{10\pi }{\pi(4+\pi)}$

$\Rightarrow r=\frac{10}{4+\pi}$

$\frac{d^2A}{dr^2}|_{ r=\frac{10}{4+\pi}}=\frac{2\pi (4+\pi)}{4}>0$

Therefore at $r=\frac{10}{4+\pi}$ , A is minimum.

Therefore the circumference of the circle is

$=2 \pi \frac{10}{4+\pi}$

$=\frac{20\pi}{4+\pi}$

4 0

2 years ago

How do you express 230 in scientific notation?

aksik [14]

The answer would be 2.3x10^2.

3 0

3 years ago

UREGENTTT HELPPP<br><br> Which shows this equation in standard form? 8-4(x-y)= 2x+6

jeka57 [31]

Answer:

Step-by-step explanation:

9-4(x-y)=2x+6

9 - 4x + 4y = 2x + 6

9 + 4y = 6x + 6

4y = 6x - 3

y = 3x/2 - 3/4

7 0

3 years ago