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3 years ago

Helpppppppppppppppppppppppppppppp

Mathematics

1 answer:

jek_recluse [69]3 years ago

5 0

The first one hopes this helps

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Someone help pleasee

Vilka [71]

Answer:

Step-by-step explanation:

g(x) = 3f(-2x)

= 3*([-2x)² + (-2x) - 2)

= 3 (4x² - 2x - 2)

= 3 * (4x² - 4x +2x - 2) {Rewrite the middle term}

= 3 *[ 4x(x - 1) + 2(x - 1)]

= 3* [ (x -1) *(4x + 2)]

= 3(x - 1)(4x + 2)

x - 1 = 0 ; 4x + 2 = 0

x = 1 ; 4x = -2

x = $\dfrac{-2}{4}=\dfrac{-1}{2}$

Roots: x = 1 , (-1/2)

3 0

3 years ago

In ΔPQR, PR

Kobotan [32]

Answer:

Step-by-step explanation:

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5 0

3 years ago

Find the equation of the line passing through the point (–1, –2) and perpendicular to the line y = –1∕2x + 5. Question options:

tankabanditka [31]

Answer:

<h3>The answer is option C</h3>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

From the question

y = - 1/2x + 5

Comparing with the general equation above

Slope / m = -1/2

Since the lines are perpendicular to each other the slope of the other line is the negative inverse of the original line

That's

Slope of the perpendicular line = 2

Equation of the line using point (–1, –2) and slope 2 is

y + 2 = 2( x + 1)

y + 2 = 2x + 2

y = 2x + 2 - 2

We have the final answer as

Hope this helps you

4 0

3 years ago

Tavon has a gift card for $135 that loses $3 for every 30-day period it is not used. He has another gift card for $115 that lose

nlexa [21]

The value of the two gift cards would be the same at 40 30-days

The value of each card be when they have equal value is $15

What can be used to represent value of number of 30 days?

Let us assume that each 30-day period is x, based on the value of each gift is the initial value minus the number of 30-days multiplied by loss in value for every 30-day period

First gift card value=135-3x

Second gift card value=115-2.50x

At the same number of 30-days, their values are the same

135-3x=115-2.50x

135-115=-2.50x+3x

20=0.50x

x=20/0.50

x=40

Value of each gift card at 40 30-days=135-(3*40)

Value of each gift card at 40 30-days=135-120

Value of each gift card at 40 30-days=15

value of each gift card=115-2.50(40)

value of each gift card=115-100

value of each gift card=15

Find out about value of gift card on:brainly.com/question/18558187

#SPJ1

5 0

2 years ago

The measure of each exterior angle of a regular 30-gon is

dezoksy [38]

Answer:

12°

Step-by-step explanation:

So, for your 30-gon, the interior angles total up to (30-2) * 180 = 5040. Each interior angle is that total divided by the number of interior angles, or 5040/30 = 168º:

<u>The measure of each exterior angle is the total divided by the number of angles, or 360/30 = 12º.</u>

4 0

3 years ago