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sleet_krkn [62]
3 years ago
14

What is the equivalent expression after this is simplified

Mathematics
2 answers:
mafiozo [28]3 years ago
8 0

Answer: -6 - 5k

Step-by-step explanation:

-3(2+4k) +7(2k-1)

-6+(-12k) + 14k -7k

-6 -12k + 14k - 7k

-6 -5k

JulijaS [17]3 years ago
6 0

Answer:

2k - 13

Step-by-step explanation:

Perform the indicated multiplication using the Distributive Property of Multiplication.

We get -6 - 12k + 14k - 7.

Next, we combine like terms;  - 12k + 14k comes to 2k and

-6 - 7 comes to -13.

The desired equivalent expression is thus

2k - 13

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stealth61 [152]
All you have to do is plug in the x and y values for each ordered pair into the left hand side of the equation and see if you get 15 = 15. If you do, the ordered pair is a solution; otherwise it is not a solution. For example, let's try (-2,-3); that is x = -2 and y = -3:

2x - 9y = 15
2(-2) - 9(-3) = 15
-4 - (-27) = 15
-4 + 27 = 15
23 = 15

This is obviously not true, so (-2,-3) is not a solution. Now you try it on each of the ordered pairs given in the problem statement.
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3 years ago
What is the sum of the first 12 terms of the geometric series below 1/2+2+8+32+
Georgia [21]

∴\frac{1}{2} +2+8+32.......12^{th}term =2796202.5

Step-by-step explanation:

First term(a) = \frac{1}{2}   common ratio(r)     =\frac{2}{\frac{1}{2} }   =4

n= 12

S_{n}=\frac{a(r^n-1)}{(r-1)}

S_{12}=\frac{\frac{1}{2}(4^{12}-1) }{4-1} =2796202.5

∴\frac{1}{2} +2+8+32.......12^{th}term =2796202.5

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4 years ago
Paulina rode her bike 1.5 km. How many meters did you ride her bike ?
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Phoenix [80]

Answer:

The equation is:

f(x) = Ix + 3I - 2

Step-by-step explanation:

For a function like:

f(x) = Ix - kI + c

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In the graph we can see that the vertex is in the point (-3, -2)

then:

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Replacing those in the equation for the function:

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f(x) = Ix + 3I - 2

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3 years ago
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