Answer:
6/25
Step-by-step explanation:
Solution:
1. Move all terms to one side
<span>25{x}^{2}+40x+16-28=0</span>
2. Simplify <span>25{x}^{2}+40x+16-28 to <span>25<span>x<span><span>2</span><span></span></span></span>+40x</span></span><span><span>−12</span></span>
<span>25{x}^{2}+40x-12=0</span>
3. Apply the Quadratic Formula<span>x=\frac{-40+20\sqrt{7}}{50},\frac{-40-20\sqrt{7}}{50}
</span>
4. Simplify solutions
<span>x=-\frac{2(2-\sqrt{7})}{5},-\frac{2(2+\sqrt{7})}{5}</span>
Done!
The teacher will need 10 packages of markers. If 8 markers to a package, 10 packages= 80 markers. If 25 students shall have 3 markers each, that comes to equal 75. So the teacher needs 10 packages and will have five left over.
Answer:
7/33
Step-by-step explanation:
x = 0.<u>21</u>212121.... 2 digits in the repeating sequence, x 100 both side
100 x = 21.21212121...
100x - x = 21.21212121... - 0.<u>21</u>212121.... = 21
99x = 21
x = 21/99 = 7/33
If this help, just add a happy face on comment, no star or brainliest please.
Any expression, like "you're pulling my leg", or "there's more than one way to skin a cat." It's really hard to explain these things to people who haven't grown up with these expressions. Also, words like "the", "and", and others are super important in everyday life, but you really can't describe. Undefined terms are also important in geometry. A point is an undefined term, and so is a line. But without these two things, geometry would be impossible.
Hopefully this helps! Let me know if you have any more questions.