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kipiarov [429]
3 years ago
11

6r = 3 (r - 4 ) - r Pls help

Mathematics
2 answers:
____ [38]3 years ago
8 0

Answer:

6=r

r*4-r

6*4=24

24-6=18

Step-by-step explanation:

im srry if its wrong

Mnenie [13.5K]3 years ago
3 0

Answer:

r=-3

Step-by-step explanation:

Hi love,

6r=3r-12-r

6r=2r-12

2r-12=6r

-12=6r-2r

-12=4r

divide both sides by 4

r=-3

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-4(-3n-8)=104<br> A:11<br> B:-6<br> C:10<br> D:6
777dan777 [17]

♡ The Question ♡

-  -4(-3n-8)=104

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Answer ♡

-  D) 6

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Explanation/Step-By-Step ♡

-  -4(-3n - 8) = 104

Divide both sides by -4!

-4(-3n - 8) over -4 = 104/-4

Simplify!

-3n - 8 = -26

Add 8 to both sides!

-3n - 8 + 8 = -26 + 8

Simplify!

-3n = -18

Divide both sides by -3!

-3n/-3 = -18/-3

Simplify!

n = 6

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♡ Tips ♡

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5 0
3 years ago
The best interest rate for a borrower on a $5,000 loan for 5 years is:
Gennadij [26K]

Answer:

So, $83.40 should be paid monthly

Step-by-step explanation:

5000 divided by 5 = 1000

1000 should be paid yearly

1000 divided by 12 = 83.40

12 represents the number of months in a year.

3 0
3 years ago
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Subtitute the pair (3,28) to x and y, if the result in right side is -8, then the pair is a solution to the equation

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= 2(3) - 28/2
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3 0
3 years ago
Which of the following represents two lines that are coplanar and do not intersect?
OlgaM077 [116]
Parallel is the answer 
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7 0
3 years ago
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Find the nature of the root
GREYUIT [131]

Answer:

1) Real and same.

2) Real and distinct

3) Real and distinct

4) Real and distinct

5) Real and distinct

6) Real and distinct

7) Real and distinct

8) Real and distinct

Step-by-step explanation:

If a quadratic equation is in the form of ax² + bx + c = 0, then Discriminant of the equation D = b² - 4ac, which governs the nature of roots the equation has.

If D > 0, then there will be two different real roots.

If D = 0, then two same and real roots.

If D < 0, then two distinct but imaginary roots.

Now, 1) x² + 6x + 9 = 0 has D = 6² - 4 × 9 × 1 = 0. So, there will be two same and real roots.

2) 5x² - x = 4x² + 2

⇒ x² - x - 2 = 0

It has D = (-1)² - 4 × 1 × (-2) = 9. Therefore, the roots will be two distinct and real.

3) \frac{2}{x} + \frac{3}{x} = x - 4

⇒ 5 = x² - 4x

⇒ x² - 4x - 5 = 0.

So, D = (-4)² - 4 × (1) × (- 5) = 36. So, the equation has two real and distinct rools.

4) x(x - 5) = 4(5 - x)

⇒ x² - x - 20 = 0

Hence, D = (-1)² - 4 × 1 × (-20) = 81

So, the roots will be real and distinct.

5) x² + 7x + 1 = 0 has D = 7² - 4 × 1 × 1 = 45

So, the roots will be real and distinct.

6) 2x² + 9x + 3 = 0, has D = 9² - 4 × 2 × 3 = 57.

Hence, the roots will be real and distinct.

7) 5x² - 6 = 13x

⇒ 5x² - 13x - 6 = 0

So, D = (-13)² - 4 × 5 × (-6) = 289

So, the roots will be real and distinct.

8) x² - x = 3(x + 7)

⇒ x² - 4x - 21 = 0

It has D = (-4)² - 4 × 1 × (-21) = 100

So, the roots will be real and distinct. (Answer)

6 0
3 years ago
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