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3 years ago

Please help me anyone, please

Mathematics

1 answer:

iVinArrow [24]3 years ago

7 0

Answer:

Step-by-step explanation:

Chaz is 3 years younger than 4 times the age of his nephew

n is the age of the nephew.

4 times the age of the nephew.

So you now have 4n.

Now you gotta subtract 3 from 4n which gets you to choice C.

4n - 3

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MATH if someone can please help that would be amazing thank you!

White raven [17]

223,200,000 should be correct

5 0

2 years ago

Find the area of a circle with a radius of 48mm

Ainat [17]

Answer:

A≈7238.23

Step-by-step explanation:

A=πr2

Area =π(48)2

8 0

3 years ago

Find a positive number for which the sum of it and its reciprocal is the smallest (least) possible. Let x be the number and let

Allisa [31]

Answer:

$S(x) = x + \frac{1}{x}$ --- Objective function

Interval = $\{x:x=1\}$

Step-by-step explanation:

Given

Represent the number with x

The required sum can be represented as:

$x + \frac{1}{x}$

Hence, the objective function is:

$S(x) = x + \frac{1}{x}$

To get the the interval, we start by differentiating w.r.t x

<em>Using first principle, this gives:</em>

$S'(x) = 1 - \frac{1}{x^2}$

Equate S'(x) to 0 in order to solve for x

$0 = 1 - \frac{1}{x^2}$

Subtract 1 from both sides

$0 -1 = 1 -1 - \frac{1}{x^2}$

$-1 = - \frac{1}{x^2}$

Multiply both sides by -1

$1 = \frac{1}{x^2}$

Cross Multiply

$x^2 * 1 = 1$

$x^2 = 1$

Take positive square root of both sides because x is positive

$\sqrt{x^2} = \sqrt{1$

$x = 1$

Representing x using interval notation, we have

Interval = $\{x:x=1\}$

To get the smallest sum, we substitute 1 for x in $S(x) = x + \frac{1}{x}$

$S(1) = 1 + \frac{1}{1}$

$S(1) = 1 + 1$

$S(1) = 2$

<em>Hence, the smallest sum is 2</em>

3 0

3 years ago

10. A square is shown below. If the perimeter of the square is 97 inches, what is the value of x?

inessss [21]

X = 3

(8.75x-2)*4=97

35x-8=97

35x=105

x=3

5 0

3 years ago

PLEASE HELP SUPER EASY MATH PROBLEM WILL MARK BRAINLIEST

topjm [15]

Answer:

m∠5 = 67

m∠7 = 67

Step-by-step explanation:

m∠4 and m∠5 add up to 180 because they are same side interior angles.

180 - 113 = m∠5

m∠5 = 67

m∠5 = m∠7 because they are vertically opposite angles

hence, m∠7 = 67 degrees

8 0

3 years ago

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