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love history [14]
2 years ago
9

How do I do this? I'm confused.​

Mathematics
1 answer:
Flura [38]2 years ago
3 0

Step-by-step explanation:

\huge\mathcal\blue{here's \:  your \:  solution} \\  \\ x = 2y - 14 \:  \:  \: (given) \\  \\ equation \:  = 5x - 7y =  - 43 \\  \\ now \: put \: the \: value \: of \: x \: in \: equation \\  \\ 5(2y - 14) - 7y =  - 43 \\  \\ 10y - 70 - 7y =  - 43 \\  \\ 3y - 70 =  - 43 \\  \\ 3y =  + 70 - 43 \\  \\ 3y = 27 \\  \\ y = 27 \div 3 \\  \\ y = 9 \\  \\ now \: put \: the \: value \: of \: y \: in \: equation \\  \\ x = (9 \times 2) - 14 \\  \\ x = 18 - 14 \\  \\ x = 4 \\  \\ \huge\mathfrak\red{hope \: it \: helps..}

You might be interested in
6,666,666×666,666 /1+2+3+4+5+6+5+4+3+2+1 − 777,777×777,777/1+2+3+4+5+6+7+6+5+4+3+2+1
jeka57 [31]

Answer:

111111 \times 1111110 is the simple expression.

Step-by-step explanation:

The expression to be solved:

\dfrac{6,666,666\times666,666 }{1+2+3+4+5+6+5+4+3+2+1} - \dfrac{777,777\times777,777}{1+2+3+4+5+6+7+6+5+4+3+2+1}

First of all, let us solve the first term:

\dfrac{6,666,666\times666,666 }{1+2+3+4+5+6+5+4+3+2+1}\\\Rightarrow \dfrac{6666666\times666666 }{36}\\\Rightarrow \dfrac{6666666\times666666 }{6\times 6}\\\Rightarrow 1111111\times 111111

Now, the right term:

\dfrac{777777\times777777}{1+2+3+4+5+6+7+6+5+4+3+2+1}\\\Rightarrow \dfrac{777777\times777777}{49}\\\Rightarrow \dfrac{777777\times777777}{7 \times 7}\\\Rightarrow 111111 \times 111111

So, the expression to be solved becomes:

1111111\times 111111-111111\times 111111\\\Rightarrow 111111(1111111-1)\\\Rightarrow 111111\times 1111110

3 0
3 years ago
I need help please!!
guajiro [1.7K]

13-11 = 2

15-13 = 2

17-15 = 2

As you can see, the numbers increased by two. hence the answer is 2.

5 0
2 years ago
Haley bought 8 pencils and 3 folders for $10.39. Nicole bought 5 pencils and 4 folders for $10.51. How much does a folder cost?
cupoosta [38]

Answer:

$1.89

Step-by-step explanation:

1) 8p+3f=$10.39

2) 5p+4f=$10.51

where p represents pencil & f represents folder.

multiply the first equation by 5 and the second equation by 8.

40p+15f=$51.95

40p+32f=$84.08

Subtract

17f=$32.13

f=$32.13/17 =$1.89

6 0
3 years ago
Read 2 more answers
Samantha needs 24.75 feet of piping for her sprinkler system. Home Depot sells pieces of piping are 8.5 feet long. Samantha buys
Juliette [100K]
0.75 feet

....................:::
5 0
3 years ago
Hi there~<br><br> Divide: <br><br> 4 1/3 ÷ 1 2/9
siniylev [52]
Make them both improper fractions
13/3 divided by 11/9
Divide = multiply reciprocal
13/3 * 9/11 = 117/11 = 10 7/11
4 0
2 years ago
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