2 years ago

I need help please I will give you brainliest

Mathematics

1 answer:

liubo4ka [24]2 years ago

7 0

Answer:

Step-by-step explanation:

4a: x=729

4b: x=9/25

5a ln (2)

5b log2(24

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Solve the system of equations. 2y+7x=−5 5y−7x=12

3241004551 [841]

We can solve this by substitution method.

Look at the second equation. If we rearrange to find 7x, we can substitute in the value into the first equation.

$5y-7x=12$

$5y-7x-12=0$

$5y-12=7x$

Therefore, $7x=5y-12$

Now replace the 7x in the first equation with 5y - 12:

$2y+7x=-5$ (substitute in 7x = 5y - 12)

$2y+(5y-12)=-5$

$7y-12=-5$

$7y=7$

$y=1$

Now that we know y, we can find x by substituting in y = 1 into any equation we want. I will use the equation: 7x = 5y - 12

$7x=5y-12$ (substitute in y = 1)

$7x=5(1) -12$

$5x=5-12$

$7x=-7$

$x=-1$

__________________________________________________________

Answer:

$y=1\\x=-1$

4 0

3 years ago

Please answer fast please

kvv77 [185]

Answer:

you can use a website called calculator soup the answer is -9/14 please mark me branlist

Step-by-step explanation:

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3 years ago

If you have a room with four walls and a ceiling, how would you label the walls (plane, line, or point)? How would you label

Sergio039 [100]

Walls = Plane

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3 years ago

What does equal -5x-22=2x+13

AleksandrR [38]

Answer:

i think its x = -5

Step-by-step explanation:

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3 years ago

petra has 15 yards of fabric to make costumes for a paly. if each costume reqires 1,1/3 yards how many costumes can she make

RUDIKE [14]

She can make 11 costumes

I found this by dividing the two numbers and when dividing them i got 11,1/4 but you can't have 1/4 of a costume so it would only be 11

Hope this helps

If there are any questions leave a comment

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3 years ago