All categories

4 years ago

If the perimeter of a square mirror is 68 inches, what is the area in square inches?

Mathematics

2 answers:

hoa [83]4 years ago

8 0

I believe it is 289,

ValentinkaMS [17]4 years ago

5 0

34 square inches I think you just divide the number in half.

You might be interested in

PLSSSSSSSS HELP (2 + 7i) - (6 + 8i) + (10 - 10i)

ElenaW [278]

Answer:

6-11i

Step-by-step explanation:

(2 + 7i) - (6 + 8i) + (10 - 10i)

Distribute the minus sign

(2 + 7i) - 6 - 8i + (10 - 10i)

Combine like terms

2-6 +10 +7i-8i-10i

6 -11i

7 0

3 years ago

Estimate square root of 12 to the nearest tenth. A 4.5 B 3.9 C 4.1 D 3.5

Sholpan [36]

Answer:

3.5

Step-by-step explanation:

As a first approximation of the square root, you can look at the integers relating the given number to the next lower square number. The next lower square number is 3^2 = 9.

12 = n^2 +r = 3^2 +3 . . . . . n = 3, r = 3

The approximate square root is ...

n +r/(2n+1) = 3 +3/7 ≈ 3.429

This value tends to be a little low. Alternatively, the root can be estimated as ...

n +r/(2n) = 3 +3/6 = 3.5

This value tends to be a little high.

A reasonable estimate of √12 is 3.5.

Of course, your calculator can tell you instantly that the root is about 3.464102, close to 3.5.

_____

Additional comment

The relation we used above simplifies the work of linear interpolation between the points (9, 3) and (16, 4) on the square root curve. For some n between 9 and 16, the interpolated root value r would be found from ...

(n -9)/(16 -9) = (r -3)/(4 -3)

(n -9)/7 = (r -3)/1

r = 3 +(n -9)/7 = 3 +(12 -9)/7 = 3 +3/7 . . . . as above

Note that "r" is used for "root" in this discussion. In the above answer, "r" is used for "remainder."

6 0

3 years ago

What is the midpoint of the segment shown below?

Amanda [17]

Answer:

answer is c (0,2)

hope it helps

7 0

2 years ago

A company earns P dollars by selling x items, according to the equation P(x)=-0.002x^2+5.5x-1000. How many items does the compan

san4es73 [151]

So.. check the picture below

that's when the profit gets maximized

$\bf \qquad \textit{vertex of a parabola}\\ \quad \\

\begin{array}{lccclll}
P(x)=&-0.002x^2&+5.5x&-1000\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)$

how many items does the company need to sell? they need to sell $\bf -\cfrac{{{ b}}}{2{{ a}}}$