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Varvara68 [4.7K]
4 years ago
12

Just confused on how to solve this

Mathematics
1 answer:
muminat4 years ago
8 0

Answer:

(14/5,-11/5)

Step-by-step explanation:

(5x-5y=25)/5

x-y=5 equation 1

3x+2y=4 equation 2

solve 1&2

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If 5+ 20 -22-3х - 10.2-2x+5, what is the value of х?
Elodia [21]

Answer:

<h2>3</h2>

Step-by-step explanation:

5+20\cdot2^{2-3x}=10\cdot2^{-2x}+5\qquad\text{subtract 5 from both sides}\\\\20\cdot2^{2-3x}=10\cdot2^{-2x}\qquad\text{divide both sides by 10}\\\\2\cdot2^{2-3x}=2^{-2x}\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\2^{1+2-3x}=2^{-2x}\\\\2^{3-3x}=2^{-2x}\iff3-3x=-2x\qquad\text{subteact 3 from both sides}\\\\-3x=-2x-3\qquad\tex\qquad\text{add}\ 2x\ \text{to both sides}\\\\-x=-3\qquad\text{change the signs}\\\\x=3

8 0
3 years ago
Use long division to determine the decimal equivalent of 5/9<br> A 0.3<br> B 04<br> C 0.5<br> D 0.6
Mashutka [201]

Answer:

C) 0.55...

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Hey, please I need help with this
gavmur [86]

Answer:

∠CGD is 52°

Step-by-step explanation:

∠AGB is 90° and its corresponding ∠EGD is also 90°

90+38= 128

180-128= 25

5 0
3 years ago
Factor (2x^2+4x) + (1x+2)
tensa zangetsu [6.8K]

Answer:

(2x + 1) (x + 2)

Step-by-step explanation:

2x² + 4x + 1x + 2

They are already arranged, so you just have to find the GCF. 2x² + 4x  have the GCF of 2 and 1x + 2 have the GCF of 1.

2x (x + 2) + 1(x + 2)

Now you divide the whole thing by x + 2.

2x (x + 2) + 1(x + 2)/ x + 2

One of them cancels out  leaving (2x + 1) and (x+2)

8 0
3 years ago
Add -2 + (-7) = what is the answer
lina2011 [118]

Answer: -9

Step-by-step explanation: 2 + 7 = 9 and just put an negative in front of 9

<h2>-9 -_-</h2>

6 0
3 years ago
Read 2 more answers
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