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3 years ago

SUMMARY: how can you use mapping rules to find rotations of objects at 90, 180, and 270 degrees?

1 answer:

6 0

A rotation is an isometric transformation that turns every point of a figure through a specified angle and direction about a fixed point.

To describe a rotation, you need three things:

Direction (clockwise CW or counterclockwise CCW)

Angle in degrees

Center point of rotation (turn about what point?)

The most common rotations are 180° or 90° turns, and occasionally, 270° turns, about the origin, and affect each point of a figure as follows:

Mark me as brainliest! :D Hope it helps

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Angl is a square. The equation of line NG is Y= 1/2 X - 6. Find the equation of line LG in slope intercept form given that the c

Irina18 [472]

Answer: y=-2x-9

Step-by-step explanation:

If ANGL is a square, then NG and LG are adjacent sides.

Adjacent sides are perpendicular. [Each angle is 90°]

The equation of line NG is $Y=\dfrac12 X-6$ .

By comparing it to equation in slope intercept form y=mx+c ( where , m= slope , c=y-interecpt)

slope = $\dfrac12$

Let slope of LG be n, then

$n\times \dfrac{1}{2}=-1$ [Product of slopes of two perpendicular line =-1]

$\Rightarrow n=-2$

Equation of a line passes through (a,b) and have slope m is given by :-

$(y-b)=m(x-a)$

Equation of LG :

$(y-1)=-2(x-(-5))\\\\\Rightarrow\ y-1=-2x-10\\\\\Rightarrow\ y=-2x-9$ [In intercept form]

3 0

3 years ago

an airplane flies at an altitude of 38,000 feet.as it nears the airport the plane begins to descend at a rate of 600 per minute

Svetlanka [38]

38,000 - 18,000 = 20,000 ft

20,0000 ÷ 600
=33.3

= 33 minutes 20 seconds

8 0

4 years ago

In three hours, Company ABC can make X ball bearings. Company DEF can make X ball bearings in 4 hours. Company GHI can make X ba

amm1812

Answer:

X ball bearings will be made in 1 hour and 20 minutes

Step-by-step explanation:

Proportions

The proportions give us an important tool to easily solve common problems of any type. We know that:

Company ABC can make X ball bearings in 3 hours.

Company DEF can make X ball bearings in 4 hours.

Company GHI can make X ball bearings in 6 hours.

In one hour, each company can make

ABC: X/3 ball bearings

DEF: X/4 ball bearings

GHI: X/6 ball bearings

Working together, they can make

$\displaystyle \frac{X}{3}+\frac{X}{4}+\frac{X}{6}$

ball bearings. Operating

$\displaystyle \frac{4X+3X+2X}{12}=\frac{9X}{12}=\frac{3X}{4}$

If they can make 3/4 of a ball bearing in one hour, then one complete ball bearing will need

$\displaystyle \frac{4}{3}$ hours to complete. It's equivalent to 1 1/3 hours or 1 hour and 20 minutes

X ball bearings will be made in 1 hour and 20 minutes

8 0

3 years ago

WRITING AND SOLVING AN EQUATION The squares are

shtirl [24]

Answer:

The area of each square is 16 square units.

Step-by-step explanation:

Given,

The two squares are identical.

Hence, their areas are of the same values.

Area of square 1:

$= 3x + 7$

Area of square 2:

$= 5x + 1$

As, their areas are equal,

$3x + 7 = 5x + 1$

$7 - 1 = 5x - 3x$

$6 = 2x$

$\frac{6}{2} = x$

$3 = x$

Therefore,

$5x + 1 = 5(3) + 1 = 15 + 1 = 16$

$3x + 7 = 3(3) + 7 = 9 + 7 = 16$

8 0

3 years ago

How long would it take an ostrich to run from Halifax to Vancouver it did not have to stop it run 80 km an hour

Katen [24]

Answer:

76 hours and 37 minutes

this is a weird question btw

5 0

3 years ago