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2 years ago

What is -7x+3y=-24+7x -2x+5y=-11

1 answer:

7 0

-7x+3y=-24+7x-2x+5y
-7x+3y=5x+5y-24
-12x-2y=-24

-7x+3y=-11

-36x-6y=-72
-14x+6y=-22
-50x=-94
Okay well I did something wrong

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May I please receive help?<br> Please?

ANEK [815]

$\huge\colorbox{red}T\colorbox{orange}h\colorbox{yellow}a\colorbox{green}n\colorbox{blue}k\colorbox{purple}s$

6 0

1 year ago

Read 2 more answers

Please show your work

Effectus [21]

Here hope this help the solution is X= -2 and y=9

4 0

1 year ago

8x-5y=21 simultaneous linear equation<br>2x+9y=-5

olya-2409 [2.1K]

Answer:

$x=2$ and $y=-1$

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

$8x-5y=21$ Equation:1

$2x+9y=-5$ Equation:2

Solving equation multiply equation 2 with 4 on both the sides

$8x+36y=-20$ Equation 3

Subtracting Equation:3 from Equation:1

$8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1$

Putting value of 'y' in Equation:2 which will give the value of x

$2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2$

8 0

2 years ago

URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!

Blababa [14]

For this case we have that by definition, the circumference of a circle is given by:

$C = \pi * d$

Where:

d: It is the diameter of the circle

They tell us that:

$d = \frac {35} {2}\\\pi = \frac {22} {7}$

Substituting:

$C = \frac {22} {7} * \frac {35} {2}\\C = \frac {770} {14}\\C = 55 \ cm$

Thus, the circumference of the circle is 55 centimeters.

Answer:

Option B

6 0

2 years ago

Read 2 more answers

Estimate the difference 8 7/12 - 4 7/8 - 4/10

Gnesinka [82]

When you are told to estimate, you should be able to do the problem in your head.
8 7/12 is close to 8 1/2
4 7/8 is very nearly 5
4/10 is very nearly 1/2

8 1/2 - 5 - 1/2 First of all you can take the 1/2 away from 8 1/2
8 1/2 - 1/2 = 8
Now take away the 5

8 - 5 = 3

So the answer is very nearly
3 <<<<< answer.

Just for fun, I'll get the exact answer. Don't hand this one in. It is 3 37/120
You learn to estimate because you are trying to guess whether or not you've entered everything correctly into your calculator. When writing a test, this is a very handy skill to have developed.

4 0

2 years ago