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Ratling [72]
3 years ago
11

An expression is shown.

Mathematics
2 answers:
babymother [125]3 years ago
6 0

the answer is B

(3x²+2x-5)-(5x²-4x+1)

= 3x²+2x-5-5x²+4x-1

= 3x²-5x²+2x+4x-5-1

= -2x²+6x-6

NikAS [45]3 years ago
4 0

Answer:

8x

2

+6x−6

this is the correct answer

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Please help ASAP will give brainlist.
melisa1 [442]

144+64= 178

\sqrt{178  }  = 13.3

a^2+b^2= c^2

Whenever finding a missing length use the formula up above :

a^2+b^2= c^2

a^2-b^2= c^2

144-64= 80

\sqrt{80}  =  \sqrt{16 }  \times  \sqrt{5}  = 4 \sqrt{5}  = 8.9

Answers are 13.3 and 8.9

6 0
3 years ago
What is the height in feet do not round up the answer
s344n2d4d5 [400]

Answer:

72.25 ft

Step-by-step explanation:

The function that models the height of the ball is

h(t) = 68t - 16 {t}^{2}

The maximum height occurs at:

t =  -  \frac{b}{2a}

t =  -  \frac{68}{2 \times  - 16}  =  \frac{68}{32}  = 2.125

We substitute t=2.125 to get:

h(2.125) = 68(2.125)  - 16(2.125) ^{2}

h(2.125) = 72.25

The maximum height is 72.25 feet

4 0
3 years ago
I need this for a test plz ?
nekit [7.7K]
The answer is b or 2
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3 years ago
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