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Liono4ka [1.6K]
3 years ago
10

-r + 6 +8r -14 Simplify the expressions by combining like terms?

Mathematics
1 answer:
GaryK [48]3 years ago
8 0

                                 -r  +  6  +  8r  -  14

Add up all the 'r's:    -r + 8r  =  7r

Add up all of the
just-plain-numbers:      + 6 - 14  =   - 8

The whole messy complicated expression is the same as        7r - 8      .
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PLEASE HELPP PLEASE find the zeros and factored form of c(x)=3x^2-3
Zepler [3.9K]

Answer:

3 ( x-1) (x+1) is the factored form

zeros are x=1, -1

Step-by-step explanation:

3x^2-3

Factor out a 3

3 ( x^2 -1)

What is inside the parentheses is the difference of squares

( a^2 -b^2) = ( a-b)(a+b)

3 ( x-1) (x+1)

To find the zeros, set this equal to zero

3 ( x-1) (x+1) =0

Using the zero product property

x-1 =0  x+1 =0

x=1,   x=-1

4 0
3 years ago
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Given the trinomial x^2+bx+c where both the first and second signs are positive, the signs of the factors will be: A. both negat
Lunna [17]
The answer here is C. The sign of the factors are both positive. We can use the FOIL method as reference in determining the sign of the factors. The 3rd term C is positive; therefore our only option is either both negative or both positive. Looking the middle term, which is positive, we know that the middle term is the sum of the outer and inner in FOIL method, which means, signs of the factors must be both positive
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4 years ago
PROBABILITY PROBLEM: Can anyone check my answers for this?
Julli [10]
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3 years ago
Find the point(s) of intersection (if any) of the plane and the line. Also, determine whether the line lies in the plane. 2x - 2
s2008m [1.1K]

Answer:

the intersection is the point P=(x,y,z)=(8,9,14) and the line does not lie in the plane

Step-by-step explanation:

from the equation of the line

x - 1/2 = y + (3/2)/-1 = (z + 1) / 2  = t (parameter)

then the parametric equation of the line is

x= 1/2 +t

y =  (3/2) + t

z = (-1) + 2*t

therefore from the equation of the plane

2x - 2y + z = 12

2*(1/2 +t) - 2[(3/2) + t]  + [(-1) + 2*t]  = 12

1+2*t - 3 -2*t -1 + 2*t = 12

-3 + 2*t = 12

t= 15/2

therefore there is only one intersection of the line with the plane ( then the line does not lie in the plane , since there would be infinite intersection points). The intersection is

x= 1/2 +t = 1/2 +15/2 = 8

y =  (3/2) + t = (3/2) + 15/2 = 9

z = (-1) + 2*t =  (-1) + 2*15/2  = 14

thus the intersection point P=(x,y,z)=(8,9,14)

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3 years ago
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kvasek [131]

Felipe's age is ≥ 5

Step-by-step explanation:

Difference of F's age and 4: f - 4

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Answer:

Step-by-step explanation:

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