All categories

2 years ago

What is Eight by the power of negative two

Mathematics

2 answers:

Dovator [93]2 years ago

4 0

0.015625 I think that's the answer Hope this helps

Damm [24]2 years ago

4 0

The answer is indeed 0.015625

You might be interested in

a mechanic buys $14.56 worth of parts from a supplier. if he pays for the parts with a $20 bill, how much change will he receive

Bond [772]

He will receive $5.04

3 0

3 years ago

Read 2 more answers

Find the components of the vertical force Bold Upper Fequalsleft angle 0 comma negative 8 right anglein the directions parallel

nydimaria [60]

Answer with Step-by-step explanation:

We are given that

F=<0,-8>=0i-8j=-8j

$\theta=\frac{\pi}{3}$

The component of force is divided into two direction

1.Along the plane

2.Perpendicular to the plane

1.The vector parallel to the plane will be= $r=cos\frac{\pi}{3}i-sin\frac{\pi}{3}j=\frac{1}{2}i-\frac{\sqrt 3}{2}j$

By using $cos\frac{\pi}{3}=\frac{1}{2},sin\frac{\pi}{3}=\frac{\sqrt 3}{2}$

Force along the plane will be= $\mid F_x\mid=F\cdot r$

Force along the plane will be = $\mid F_x\mid=F\cdot (\frac{1}{2}i-\frac{\sqrt 3}{2}j)=-8j\cdot(\frac{1}{2}i-\frac{\sqrt 3}{2}j)=8\times \frac{\sqrt 3}{2}=4\sqrt 3$ N

By using $i\cdot i=j\cdoty j=k\cdot k=1,i\cdot j=j\cdot k=k\cdot i=j\cdot i=k\cdot j=i\cdot k=0$

Therefore, force along the plane= $\mid F_x\mid(\frac{1}{2}i-\frac{\sqrt 3}{2}j)=4\sqrt 3(\frac{1}{2}i-\frac{\sqrt 3}{2}j)$

2.The vector perpendicular to the plane= $r=-sin\frac{\pi}{3}-cos\frac{\pi}{3}=-\frac{\sqrt 3}{2}i-\frac{1}{2}j$

The force perpendicular to the plane= $\mid F_y\mid=F\cdot r=-8j(-\frac{\sqrt 3}{2}i-\frac{1}{2}j)$

The force perpendicular to the plane= $4$ N

Therefore, $F_y=4(-\frac{\sqrt 3}{2}i-\frac{1}{2}j)$

Sum of two component of force= $F_x+F_y=4\sqrt 3(\frac{1}{2}i-\frac{\sqrt 3}{2}j)+4(-\frac{\sqrt 3}{2}i-\frac{1}{2}j)$

Sum of two component of force= $2\sqrt 3i-6j-2\sqrt3 i-2j=-8j$

Hence,sum of two component of forces=Total force.

6 0

3 years ago

Find the midpoint of each line segment

devlian [24]

Answer:

( $\frac{7}{2}$ , $\frac{1}{2}$ )

Step-by-step explanation:

For this you use the midpoint formula

$(\frac{x_{2} +x_{1} }{2} ,\frac{y_{2} +y_{1} }{2} )$

the points would be (2,1) and (5,2)

The midpoint would be ( $\frac{7}{2}$ , $\frac{1}{2}$ )

5 0

2 years ago

NEED HELP!! <br> Which is a valid proportion?

aleksley [76]

Answwer is DDdDdDdDdDdD

6 0

3 years ago

Please help, i am very confused<br> the answer has to be like 6π<br> so ignore the π

Mice21 [21]

The equation for surface area is: $A= \pi r(r+ \sqrt{h^2+r^2}$ . To get r, you must use Pythagorean theorem. r is found to be 45. This means after you plug it in, you get about 13571.68

6 0

2 years ago