3 years ago

How do you check the equation 3x - 7 = 5x + 19

1 answer:

6 0

How to check an answer is by plugging the answer you got for x into the equation. do u need to know how to get the answer?

You might be interested in

The<br> Calculate the perimeter of<br> Following Shape:<br> 8cm<br> 5cm

mina [271]

Answer:

where is your shape

Step-by-step explanation:

firstly give shape then we find out perimeter

7 0

2 years ago

Read 2 more answers

E. 2078-01-08

Mazyrski [523]

Answer:

the full question isn't there. what do you need to find the number of??

4 0

2 years ago

827 divided by 1120

KiRa [710]

It can be the last one, 827 over 1120

Hope that helps

4 0

2 years ago

Read 2 more answers

5+2 root 3 / 7+4 root 3 =a-6root3

STALIN [3.7K]

Answer:

Step-by-step explanation:

$\dfrac{5+2\sqrt3}{7+4\sqrt3}\qquad\text{use}\ (a+b)(a-b)=a^2-b^2\\\\=\dfrac{5+2\sqrt3}{7+4\sqrt3}\cdot\dfrac{7-4\sqrt3}{7-4\sqrt3}=\dfrac{(5+2\sqrt3)(7-4\sqrt3)}{7^2-(4\sqrt3)^2}\qquad\text{use FOIL}\\\\=\dfrac{(5)(7)+(5)(-4\sqrt3)+(2\sqrt3)(7)+(2\sqrt3)(-4\sqrt3)}{49-4^2(\sqrt3)^2}\\\\=\dfrac{35-20\sqrt3+14\sqrt3-8(3)}{49-(16)(3)}=\dfrac{(35-24)+(-20\sqrt3+14\sqrt3)}{49-48}\\\\=\dfrac{11-6\sqrt3}{1}=11-6\sqrt3$

8 0

2 years ago

HELP ME PLEASE 10 POINTS ON IT PLEASE HELP ME

dimulka [17.4K]

hope it helps

plz. mark as brainliest

7 0

2 years ago

Read 2 more answers