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Anon25 [30]
3 years ago
13

I NEED HELP PLEASE IM BEGGING YOU !!!!!!!!!!!!

Mathematics
1 answer:
Sever21 [200]3 years ago
5 0
Answer: 1: 30 degrees
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What's the answer to -2x^2-4x-5=o and what's the solution
Maksim231197 [3]
-2x^2-4x=0
you just move the -5 to the right and get 5 and you cant subtract 4x from -2x^2
8 0
3 years ago
If Arabella ran 7229 feet in 561 seconds how many mph did she run
Alexxx [7]
7229 feet = 1.369129 miles
561 seconds =0.155833 hours 
 
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3 years ago
Each morning librarians place 560 books on a book shelf in the school library. Each student that visits library that day takes e
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Answer:

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7 0
3 years ago
Solve 2x2 − 12x + 20 = 0.<br><br> 3 ± i<br> 3 ± 2i<br> 1 ± 2i<br> 2 ± 3i
makkiz [27]
This is the concept of quadratic equations, solving the equation 2x^2-12x+20=0 using the formula we get:
x=[-b+/-sqrt(b^2-4ac)]/(2a)
from our equation, a=2,b=-12 and c=20
x=[-(-12+/-sqrt((-12)^2-4*2*20)]/(2*2)
x=[12+/-sqrt(144-160]/4
x=[12+/-sqrt(-16)]/4
x=[12+/-4i]/4
x=[3+\-i]
the answer is A] 3+/-i
7 0
3 years ago
Graham buys 15 pens for $12.75. What is the unit price per pen? Later, at another store, Graham finds 20 of the same pens priced
elena-s [515]
$12.75 divided by 15 pens = $0.85 per pen

$17.40 divided by 20 pens = $0.87 per pen

the first store has the lower price for pens. when you calculate the price of one singular pen, the first store sells them for $0.85 however the second store sells them for $0.02 more ($0.87)
8 0
3 years ago
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