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stira [4]
3 years ago
15

HELP ASAP!!!!!!!!!!!!!

Mathematics
1 answer:
Igoryamba3 years ago
4 0

Answer:

just calculate

Step-by-step explanation:

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The quadratic equation 2x^2 + bx + 18 = 0 has a double root. Find all possible values of b.
Doss [256]
When a quadratic equation ax^2+bx+c has a double root, the discriminant,
D=b^2-4ac=0
Here 
a=2,
b=b,
c=18
and 
D=b^2-4ac=b^2-4*2*18=0 
solve for b
b^2-144=0
=> b= ± sqrt(144)= ± 12

So in order that the given equation has double roots,  the possible values of b are ± 12.
4 0
3 years ago
Hey please I need help with this
saul85 [17]

Answer:

78.5

Step-by-step explanation:

This is because of the formula r^2pi since 5^2=25 and 25x3.14 it equal 78.5

8 0
3 years ago
Please help! 5 points! Will give Brainliest.
Olegator [25]
170 and 60 is the answer is that want you are asking for
3 0
3 years ago
Erica throws a tennis ball against a wall, and it bounced bac. Which force is responsible for sending to ball back to erica
lisabon 2012 [21]
Field force is responsible
8 0
3 years ago
Allana used Fraction 3 over 5 yard of fabric to make a scarf. Can she make 2 of these scarves with Fraction 1 and 7 over 10 yard
Paul [167]
(1 7/10) / (3/5)
(17/10) / (3/5) =
17/10 * 5/3 =
85/30 = 
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5 0
3 years ago
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