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Ivan
2 years ago
12

If 3 out of every 5 dentist recommend sugarless gum to their patients who chew gum, how many would recommend sugarless gum if 10

0 dentist were polled
A)80
B)85
C)75
D)60
Mathematics
1 answer:
cupoosta [38]2 years ago
5 0

Answer: d 60 I think

Step-by-step explanation:

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-2x^2+5x-4=0 , find the discriminant
BaLLatris [955]

Answer:

The discriminant is -7

Step-by-step explanation:

The discriminant of a quadratic function/equation(ax^2+bx+c = 0) is calculated as:

b^2 -4ac

Here

b is the co-efficient of x

a is the co-efficient of x^2

and c is the constant

Given equation is:

-2x^2+5x-4=0

Here

a = -2

b = 5

c = -4

Putting the values in the formula for discriminant

= b^2 - 4ac\\= (5)^2 - 4(-2)(-4)\\= 25 - 32\\=-7

As the discriminant is negative, the equation has no real solution.

Hence,

The discriminant is -7

5 0
2 years ago
How to simplify 3 over 18
Setler79 [48]
\frac{3}{18} = \frac{1\times3}{6\times3} =\boxed{\bf{\frac{1}{6}}}
4 0
2 years ago
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Find the value of y. y-62=-86<br><br> Show how you got the answer
astraxan [27]

Answer:y=-24

Step-by-step explanation:

Move all terms not containing

y

to the right side of the equation.

5 0
2 years ago
Solve: 9-2x = 4x + 33
worty [1.4K]
Simplifying
4x+-9= 2x + 33
Reorder the terms:
-9+4x = -2x + 33
Reorder the terms:
-9 + 4x = 33 + -2x
Solving:
-9 + 4x = 33 + -2x
Answer: x = 7
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3 years ago
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Answer:

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Step-by-step explanation:

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