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worty [1.4K]
4 years ago
10

Chose the substitution method to solve the system of equations choose the correct ordered pair 3x-y=7 2x-2y2

Mathematics
1 answer:
xenn [34]4 years ago
7 0

Answer:

(3, 2)

Step-by-step explanation:

3x-y=7

2x-2y=2

------------

y=3x-7

substitute this equation to 2x-2y=2

first, simplify 2x-2y=2 into x-y=1.

-----------------------------------------------------

x-(3x-7)=1

x-3x+7=1

-2x+7=1

-2x=1-7

-2x=-6

x=-6/-2=3

y=3(3)-7=9-7=2

Answer: x=3, y=2.

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elena-14-01-66 [18.8K]
A) 4( f^{2} - g) + ( f^{2} + 2g)

b) 3(x + y)^2 + 5(2x - y)
5 0
3 years ago
Terri's teacher gives her the equation 3(5)^x=127-2x, and tells her that she will not know how to solve it algebraically. Explai
kicyunya [14]
3(5^x) is an exponential function.and which rise very fast
y = 127 - 2x is a line Which decrease wçith a 2 slope f(0) = 127
3.5^2 = 75 and 3.5^3 = 375
I guess the intersection will be between 2and 3
lets put both the functions in a graph calculator
window:
x between 2 and 3
y between 75 and 127
I have an intersection between 2 and 3
use the "table" of the calculator
we can see that the intersection is between 2.3 and 2.4
try again
range:
start:2.3
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4 0
4 years ago
Consider the enlargement of the complex figure.
Vitek1552 [10]

Answer:

The scale factor is 3 and Divide by 24 to find b's length.

Step-by-step explanation:

just put in the answer lol.

6 0
3 years ago
The table below shows the cube roots of different numbers:
Mila [183]

part A)

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part B)

f(x) = 10 + 20x

so if you rent the bike for a few hours that is

1 hr.............................10 + 20(1)

2 hrs..........................10 + 20(2)

3 hrs..........................10 + 20(3)

so the cost is really some fixed 10 + 20 bucks per hour, usually the 10 bucks is for some paperwork fee, so you go to the bike shop, and they'd say, ok is 10 bucks to set up a membership and 20 bucks per hour for using it, thereabouts.

f(100) = 10 + 20(100) => f(100) = 2010.

f(100), the cost of renting the bike for 100 hours.

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3 years ago
Give the slope and the y-intercept of the line y = 8x + 6. Make sure the y-intercept is written as a coordinate. This
larisa [96]
Slope= 8
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6 0
3 years ago
Read 2 more answers
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