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irina [24]
3 years ago
7

PLEASE HELP ASAP 35 POINTS!!

Mathematics
1 answer:
OLga [1]3 years ago
4 0

Answer:

-1

Step-by-step explanation:

4x+5y=7

3x-2y= -12

To get the opposite coefficient, we multiply by -1

-1(4x+5y=7 )

-4x-5y = -7

-1*(3x-2y= -12)

-3x +2y = 12

Both equations now have the opposite coefficients on both x and y.

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Pleas help me solve and can you show me how you solved it
matrenka [14]

Answer: K=2

Step-by-step explanation:

-8k+6=-10k+10

+10k

2k+6=10

-6

2k=4

k=2

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3 years ago
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PLEASE HELP ME ASAP BECAUSE I AM SLOWLY LOSING MY MIND-
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35 + 80 = 115

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Eric is a great skateboard fan. He visits a shop named SKATERS to
IceJOKER [234]

Answer:

minimum: 80 zeds

maximum: 137 zeds

Step-by-step explanation:

minimum price is where you choose all the cheapest options

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7 0
2 years ago
A rectangular garden has a length of 9 feet and a width of 4.5 feet. What is the perimeter of the garden?​
Andreyy89
Answer: 27

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6 0
3 years ago
If x²-5x +1 =0, what is the value of -<br><img src="https://tex.z-dn.net/?f=%28x%20%2B%20%20%5Cfrac%7B1%7D%7Bx%7D%20%29%20%20" i
ra1l [238]
<h3>Answer:   5</h3>

=================================================

Work Shown:

x^2 - 5x + 1 = 0

x^2 + 1 - 5x = 0

x^2 + 1 = 5x

(x^2 + 1)/x = 5    .... where x is nonzero

(x^2)/x + (1/x) = 5

x + (1/x) = 5

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

An alternative method involves solving the original equation using the quadratic formula. After you get the two roots x = p and x = q, you should be able to find that p + 1/p = 5 and also q + 1/q = 5 as well.

In this case,

p = (5 + sqrt(21))/2

q = (5 - sqrt(21))/2

8 0
2 years ago
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