Quiz

Can someone help with this question

nevsk [136]

Answer:

It should I only looked at the first few columns and the matched up

Step-by-step explanation:

5 0

2 years ago

You are working as a sales clerk in a fabric store and need to determine the price on some fabric. The fabric store sells for $6

mariarad [96]

Answer:

$6.10

Step-by-step explanation:

Given the fabric store sells the fabric for $6.97 per yard

Given that a customer buys 7/8 yard of fabric.

Let the cost the customer pays be x then

$1 yard---->6.97$

$\frac{7}{8} yard---->x$

on cross multiplication we get

$x\time 1=6.97\times \frac{7}{8}$

x=6.01

Therefore the amount the customer should pay is $6.01

6 0

3 years ago

Help me Asap!!!!!!!! -3x +5 (x+3)=23

Maru [420]

−3x+5(x+3)=23

−3x+(5)(x)+(5)(3)=23

−3x+5x+15=23

(−3x+5x)+(15)=23

2x+15=23

2x+15−15=23−15

2x=8

2 2

x=4

5 0

2 years ago

Read 2 more answers

Need help in proving theorems of square please ASAP

lions [1.4K]

Answer:

The length of $\overline{JO}$ is 48.

Step-by-step explanation:

A square is a quadrilateral whose four sides have the same length and four internal angles have the same measure. The sum of measures of internal angles in quadrilaterals equals 360°. Let $m\,\angle BOJ = 4\cdot x -6$ and $BO = 2\cdot x - 8$ , the value of $x$ is:

$4\cdot (4\cdot x - 6) = 360^{\circ}$

$16\cdot x -24 = 360^{\circ}$

$16\cdot x = 384^{\circ}$

$x = 24$

And the length of $JO$ is:

$JO = BO = 2\cdot x - 8$

$JO = 40$

The length of $\overline{JO}$ is 48.

8 0

3 years ago

Kyle boards a Ferris wheel at the 3-o'clock position and rides the Ferris wheel for multiple revolutions. The Ferris wheel rotat

SpyIntel [72]

Answer:

a) The expression for the change in angular position is $\theta = 5\cdot t$ .

b) The expression for the height of Ryan regarding the center of the Ferris wheel is $H(t) = 40\cdot \sin (5\cdot t)$ .

c) The expression for the height of Ryan above the ground is $H(t) = 40\cdot \sin (5\cdot t) + 47$ .

Step-by-step explanation:

The statement is incomplete. Complete form is introduced below:

Kyle boards a Ferris wheel at the 3-o'clock position and rides the Ferris wheel for multiple revolutions. The Ferris wheel rotates at a constant angular speed of 5 radians per minute and has a radius of 40 feet. The center of the Ferris wheel is 47 feet above the ground. Let t represent the number of minutes since the Ferris wheel stated rotating.

a) Write an expression (in terms of t) to represent the varying number of radians $\theta$ Ryan has swept out since the ride started.

b) Write an expression (in terms of t) to represent Ryan's height (in feet) above the center of the Ferris wheel.

c) Write an expression (in terms of t) to represent Ryan's height (in feet) above the ground.

a) Let suppose that Ferris wheel rotates counterclockwise. As the Ferris wheel rotates at constant rate, this kinematic expression can be used to determine the change in angular position ( $\theta$ ), in radians:

$\theta = \omega \cdot t$ (1)

Where:

$\omega$ - Angular velocity, in radians per minute.

$t$ - Time, in second.

If we know that $\omega = 5\,\frac{rad}{min}$ , then the expression for the change in angular position is $\theta = 5\cdot t$ .

b) Geometrically speaking, Ryan's height with respect to the center of the Ferris wheel is described by the following formula:

$H(t) = r \cdot \sin (\omega\cdot t)$ (2)

Where:

$r$ - Radius of the Ferris wheel, in feet.

$H(t)$ - Height of Ryan with respect to the center of the Ferris wheel, in feet.

If we know that $\omega = 5\,\frac{rad}{min}$ and $r = 40\,ft$ , then the expression for the height of Ryan regarding the center of the Ferris wheel is $H(t) = 40\cdot \sin (5\cdot t)$ .

c) We use the following geometric expression to model Ryan's height above the ground:

$H(t) = r\cdot \sin (\omega\cdot t) +h_{o}$ (3)

Where $h_{o}$ is the height of the center of the Ferris wheel above the ground, in feet.

If we know that $h_{o} = 47\,ft$ , $\omega = 5\,\frac{rad}{min}$ and $r = 40\,ft$ , then the expression for the height of Ryan above the ground is $H(t) = 40\cdot \sin (5\cdot t) + 47$ .

5 0

3 years ago