3 years ago

Solve and verify each of the following systems of linear equations 4y=3x+7 and 9x+4y-139=0

1 answer:

7 0

Rearranging the first equation:-

3x - 4y = -7
9x + 4y = 139

12x = 132
x = 132/12 = 11
Substituting fro x in the second equation:-
9(11) + 4y = 139
4y = 139 - 99 = 40
y = 40/4 = 10

Answer x = 4 , y = 10.

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RSB [31]

他自己是我心目中最重要就是這樣啊。我們都會繼續

6 0

3 years ago

I WILL MARK BRAINLIEST

vekshin1

Hello!

You can use the Pythagorean Theorem

$a^{2} + b^{2} = c^{2}$

c is the hypotenuse which is the side across the right angle
a and b are the other sides

Put in the values you know

$a^{2} + 5^{2} = 12^{2}$

Square the numbers

$a^{2} + 25 = 144$

Subtract 25 from both sides

$a^{2} = 119$

Take the square root of both sides

a = 10.9

The answer is D) 10.9 centimeters

Hope this helps!

3 0

3 years ago

Read 2 more answers

Lilith and her friend shared a pizza. Lilith ate two sixths of the pizza and her friend ate three sixths. How much pizza did the

Tcecarenko [31]

Step-by-step explanation:

$\frac{2}{6} + \frac{3}{6 } =$