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krok68 [10]
3 years ago
11

Round to 3 SF 7.8436 its urgent​

Mathematics
1 answer:
LenKa [72]3 years ago
7 0
Any significant number is any number after the first non-zero number so therefore the answer is 7.84
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-9x = 5 - 2y. 15x = -11 + 2y <br>HELP ​
I am Lyosha [343]

Answer:

(-1, -2)

Step-by-step explanation:

-9x= 5 - 2y

15x = -11 + 2y => 2y = -11 - 15x

Plug the value for 2y into the first equation.

-9x = 5 - 15x - 11. Solve for x.

-9x = -6 - 15x.

-9x + 15x = -6.

6x = -6.

x = -1.

Now that we found x, we will solve for y.

2y = -11 - 15(-1)

2y = -11 + 15

2y = -4

y = -2.

Thus, our solution set is (-1, -2).

Hope this helps!

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4 years ago
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Answer:

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Step-by-step explanation:

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Best &amp; correct answer gets brainliest.
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Option C is needed because the reason for proving this pair of congruent triangles is SAS, (an angle between 2 equal sides)
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Ella and her brother are driving between 2 cities that are 330 miles apart at a rate of 55 mph.How long will it take them to mak
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Answer:

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Does anyone know how to do this problem?
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