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Dahasolnce [82]
2 years ago
13

Use the discriminant to determine the nature of the roots of the following equation. y^2 - 5y - 3 = 0

Mathematics
1 answer:
iris [78.8K]2 years ago
6 0
Here a=1, b= -5 and c= -3

so the discrim. is b^2 - 4(a)(c),   or   (-5)^2 - 4(1)(-3)  = 25 + 12 = 37.

Because the discrim. is +, you'll have 2 real, unequal roots.
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A backpack that normally sells for $39 Is on sale for 33% off. Find the amount of the discount and the sale price
Nataliya [291]
To get the price, you have to multiply the amount by the percent it would become.

100% of 39 is 39
It is 33% off
100 (1.00) - 33 (0.33) = 67% (0.67)

Remember, the percent is a decimal because it is part of a whole (1).

39*0.67=$26.13.

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3 years ago
Two ladders are leaning against a wall at the same angle, as shown. How long is the short ladder? (The long ladder is 70×50) (Th
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2 years ago
Freddy’s savings account went from $520 to $321 after he purchased a new bike. What was the percent decrease?
Vinil7 [7]

Step-by-step explanation:

The bike cost $199 to get $199 you do a number line then label 520 then at the end label 321 so then you do -20 then -100 then -50 then -20 then -9. so now you add them up 20+100+50+20+9 which equals =199

so bike cost $199

then 520%×199= 1034.8

or 520%×321=1669.2

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5 0
2 years ago
Choose all of the points that would be on a graph for y=7x
pav-90 [236]
Hey there! :D

Plug in the points to see if they work. 

y=7x

(2,14) -> (x,y)

14=7*2

14=14

That works. 

(0,0) 

0=7*0

0=0

That works 

(1,7)

7=7*1

7=7

That works. 

The points that work are (2,14), (0,0), and (1,7)

I hope this helps!
~kaikers
3 0
3 years ago
Find the 10th term<br> f(n) = /n +17
MatroZZZ [7]

Answer:

Step-by-step explanation:

beggining  to end  f 17 answer

7 0
3 years ago
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