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k0ka [10]
3 years ago
6

DAVID PLZ HELP LAST ONE

Mathematics
2 answers:
charle [14.2K]3 years ago
6 0

Answer:

THE ANSWER IS 68

Step-by-step explanation:

Leto [7]3 years ago
3 0

Answer:

1.D

2.c

Step-by-step explanation:

f(m/4)=8(m²/16)-4(m/4)

=m²/2-m

f(-4)=-3(-4)²+5(-4)

=-3(16)-20

=-48-20

=-68

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7 0
3 years ago
How many times does X squared minus 4X -12 cross the X axis
kolbaska11 [484]

We can solve this problem using discriminant.

x^2-4x-12's discriminant is

(-4)^2-4*-12=16+48 which is clearly larger than 0

This means that it crosses over the axes 2 times.

In case you don't know what discriminant is, its in equation ax^2+bx+c

the discriminant is b^2-4ac.

If its positive it has 2 crosses with x axis, if negative then 0 crosses, if 0 then 1 cross.

Hope this helped at least a little bit :D

4 0
3 years ago
How did you fine the answer. The answer that I have is correct but how do you get to it . I need 1a 1b and 2
Anna71 [15]

1a:

580 - (580 × .1) - 20

580 - (58) - 20

522 - 20

502

1b:

990 - (990 × .25) - 20

990 - (247.5) - 20

742.5 - 20

722.5

I'm not sure how to solve #2.

6 0
3 years ago
If an object is moving at a changing speed in the same direction what is the acceleration of the object (zero or not Zero)
andreyandreev [35.5K]

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Step-by-step explanation:

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8 0
2 years ago
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Please help me solve this.
Doss [256]

Answer:

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Step-by-step explanation:

7 0
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