What is the perimeter, to the nearest hundredth of a unit, of polygon
ABCDE ?

Answers

Answer 1

Answer:

Step-by-step explanation:

answer is 20.31

I'm positive

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What is 5/6 ÷ 5/16 ?

Answers

Answer:

2.66666666667 Rounded it would be 2.7

Step-by-step explanation:

Find the exact roots of x^2+10x-8=0 by completing the square

Answers

From the original equation x^2+10x-8=0, move the loose number on the other side. Your new equation will be x^2+10x=8. Moving an element from one side to another reverses its sign. From -8 to +8. Then take half of the x-term and square it and add it on both sides. X-term is 10x and 10 is the number, half of it is 5 then square of 5 is 25. Add 25 on both side. Your new equation will be x^2+10x+25=8+25. Then complete the square form of the left side of the equation, (x+5)^2=33. Square root both side then you will get x+5=squareroot of 33. Your x = -5 plus/minus squareroot of 33.

Daniel wants to buy cookies for her friends. The area of a cookie is 113.04 in2. What is the circumference of the cookie?

Answers

Answer:

The circumference of the cookie is 37.68 inches.

Step-by-step explanation:

We have,

The area of a cookie is 113.04 square inches.

It is circular in shape. The area of circle is given by :

$A=\pi r^2$

r is radius of circle

$r=\sqrt{(A)/(\pi)} \n\nr=\sqrt{(113.04)/(3.14)} \n\nr=6\ \text{inch}$

The circumference of circular shaped object is given by :

$C=2\pi r\n\nC=2* 3.14* 6\n\nC=37.68\ \text{inch}$

So, the circumference of the cookie is 37.68 inches.

Let f be a function of two variables that has continuous partial derivatives and consider the pointsA(8, 9),

B(10, 9),

C(8, 10),

and

D(11, 13).

The directional derivative of f at A in the direction of the vector AB is 9 and the directional derivative at A in the direction of

AC is 2. Find the directional derivative of f at A in the direction of the vector AD.

(Round your answer to two decimal places.)

Answers

Answer:

The directional derivative of f at A in the direction of $\vec{u}$ AD is 7.

Step-by-step explanation:

Step 1:

Directional of a function f in direction of the unit vector $\vec{u}=(a,b)$ is denoted by $D\vec{u}f(x,y)$ ,

$D\vec{u}f(x,y)=f_(x)\left ( x ,y\right ).a+f_(y)(x,y).b$ .

Now the given points are

$A(8,9),B(10,9),C(8,10) and D(11,13)$ ,

Step 2:

The vectors are given as

AB = (10-8, 9-9),the direction is

$\vec{u}_(AB) = (AB)/(\left \| AB \right \|)=(1,0)$

AC=(8-8,10-9), the direction is

$\vec{u}_(AC) = (AC)/(\left \| AC \right \|)=(0,1)$

AC=(11-8,13-9), the direction is

$\vec{u}_(AD) = (AD)/(\left \| AD \right \|)=\left ((3)/(5),(4)/(5) \right )$

Step 3:

The given directional derivative of f at A $\vec{u}_(AB)$ is 9,

$D\vec{u}_(AB)f=f_(x) \cdot 1 + f_(y)\cdot 0\nf_(x) =9$

The given directional derivative of f at A $\vec{u}_(AC)$ is 2,

$D\vec{u}_(AB)f=f_(x) \cdot 0 + f_(y)\cdot 1\nf_(y) =2$

The given directional derivative of f at A $\vec{u}_(AD)$ is

$D\vec{u}_(AD)f=f_(x) \cdot (3)/(5) + f_(y)\cdot (4)/(5)$

$D\vec{u}_(AD)f=9 \cdot (3)/(5) + 2\cdot (4)/(5)$

$D\vec{u}_(AD)f= (27+8)/(5) =7$

The directional derivative of f at A in the direction of $\vec{u}_(AD)$ is 7.

Can someone please help me!!

Answers

X=14 in
Y=71 degrees
Z=18 in

Help ASAP

Brian ran 4 1/4 miles in 3/4 of an hour. How fast was brian running.

Answers

(4 1/4) / (3/4)...turn mixed number to improper fraction
(17/4) / (3/4)...when dividing fractions, flip what u r dividing by, then multiply
17/4 * 4/3 =
68/12 =
5 2/3 miles per hr

Answer:

5 2/3

Step-by-step explanation:

might be late but

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