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leva [86]
4 years ago
12

If 3x + 4 = -5 what is the value of x2 - 4x?

Mathematics
1 answer:
Ratling [72]4 years ago
4 0
Hope this helps you!!

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Find the slope of a line perpendicular to y = 3x + 7
Vikki [24]

Answer:

-1/3

Step-by-step explanation:

The slope of the line has the form y = mx + b where m is the slope. Here the slope is m = 3. A line perpendicular to it will have a negative reciprocal slope. The negative reciprocal of 3 is -1/3.

4 0
3 years ago
Complete the following exercises by applying polynomial identities to complex numbers.
erik [133]

1.)

   =(x-8i)(x+8i)

x^2+8ix-8ix-64i^2

x^2-64i^2

x^2-64(-1)

x^2+64

2.)

    =(4x-7i)(4x+7i)

16x^2+28ix-28ix-49i^2

16x^2-49i^2

16x^2-49(-1)

16x^2+49

3.)

    =(x+9i)(x+9i)

x^2+9ix+9ix+81i^2

x^2+18ix+81(-1)

x^2+18ix-81

4.)

    =(x-2i)(x-2i)

x^2-2ix-2ix+4i^2

x^2-4ix+4(-1)

x^2-4ix-4

5.)

    =[x+(3+5i)]^2

(x+5i+3)^2

(x+5i+3)(x+5i+3)

x^2+5ix+3x+5ix+25i^2+15i+3x+15i+9

x^2+6x+10ix+30i+25i^2+9

x^2+6x+10ix+30i+25(-1)+9

x^2+6x+10ix+30i-25+9

x^2+6x+10ix+30i-16

Hope this helps :)

6 0
3 years ago
Students found that a box with sides 4cm, 4cm, and 5 cm held 192 Skittles.
Tpy6a [65]

Answer:

Volume is 80 cc

Ratio is 23 skittles per 20 cubic centimeter

Volume of a skittle is .416 cubic centimeters per skittle

Step-by-step explanation:

Volume = l*w*h = 4*4*5 = 80 cubic centimeters

192 skittles / 80 cubic centimeters is the ratio. You have to simplify it though.

192/80=46/40                  23 skittles per 20 cubic centimeters

The volume of a skittle is 80 cubic centimeters/192 skittles = .416 cm^3/skittle

7 0
3 years ago
When dividing 250,000 by 100, the digits in the quotient move how many places to the right?
Zanzabum

When dividing 250,000 by 100, the digits in the quotient move by 2 places to the right.

<u>Step-by-Step explanation:</u>

Here we have , to find out that When dividing 250,000 by 100, the digits in the quotient move how many places to the right . Let's find out:

⇒  dividing 250,000 by 100

⇒  250,000 / 100

⇒  \frac{250000}{100}

⇒  \frac{2500(100)}{100}

⇒  2500

Initially we had 250,000 of 6 digits and now after dividing 250,000 by 100,  we have 2500 of 4 digits ! So , Number of places quotient shift to right is:

⇒ 6-4

⇒ 2

Therefore, When dividing 250,000 by 100, the digits in the quotient move by 2 places to the right.

6 0
3 years ago
PLEASE SOMEONE I REALLY NEED THE HELP!!!!! WOULD BE ALL OF GRATEFUL!!!
Alik [6]
According to you, you are smarter than me so... cant help.

ty for the points general!
3 0
3 years ago
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