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pishuonlain [190]
3 years ago
6

If f(x)=16x-30 and g(x)=14x-6 for which value of x does (f-g)(x)=0

Mathematics
1 answer:
kirza4 [7]3 years ago
8 0
I think x=12

          -Kassy V.
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If -4 is a root of the equation x^2+px-4=0 and the equation x^2+px+q=0 has equal roots, find the value of p and q
zubka84 [21]

Answer:

p = 3, q = 2.5

Step-by-step explanation:

Given that x = - 4 is a root of the equation, then

(- 4)² - 4p - 4 = 0, that is

16 - 4p - 4 = 0

12 - 4p = 0 ( subtract 12 from both sides )

- 4p = - 12 ( divide both sides by - 4 )

p = 3

Also given that the equation x² + px + q = 0 has equal roots

Thus the value of the discriminant b² - 4ac = 0

Here a = 1, b = p and c = q, thus

p² - 4q = 0 ← substitute p = 3 from above into the equation

9 - 4q = 0 ( subtract 9 from both sides )

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q = 2.5

8 0
3 years ago
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kap26 [50]
For number 5. X=12.5 and for number 6. X=4

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4 0
2 years ago
Write an equation in slope intercept form of the line with a slope of -3/4 and a y-intercept of -5
Lina20 [59]
Y= -3/4x - 5
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the b is the y intercept, where the line first crosses the y axis. in this equation -5.

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5 0
3 years ago
Solve for g g + (-7) = 21
Finger [1]

Answer:

g=28

Step-by-step explanation:

g + (-7) = 21

g-7 = 21

g= 21+7

g=28

3 0
2 years ago
Read 2 more answers
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valkas [14]

Answer:

You can calucate b by using pythagorean theorem:

a² + b² = c²

21² + b² = 29²

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        b  = √400 = 20 (m)

5 0
3 years ago
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