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serg [7]
3 years ago
10

What percent of the trees sampled were less than 75 ft tall?

Mathematics
2 answers:
Allisa [31]3 years ago
6 0

Answer:

B=45

Step-by-step explanation:

loris [4]3 years ago
3 0

Answer:

D

Step-by-step explanation:

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3 years ago
What is the discriminant of the polynomial?<br>2x^2+5x-8<br>​
12345 [234]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

Let's find the discriminant (D) of the given polynomial ~

Let's compare the given quadratic expression with general expression ~

\boxed{ \boxed{ \sf {ax}^{2} +b x + c }}

we get ;

  • \sf \: a = 2
  • \sf \: b = 5
  • \sf \: c =  - 8

Now, use the following formula :

\qquad \sf  \dashrightarrow \: D = b² - 4ac

\qquad \sf  \dashrightarrow \: D = (5) {}^{2}  - (4 \times 2 \times ( - 8))

\qquad \sf  \dashrightarrow \: D = 25 - ( - 64)

\qquad \sf  \dashrightarrow \: D = 25 + 64

\qquad \sf  \dashrightarrow \: D = 89

Therefore, discriminant of the given quadratic expression is 89

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3 years ago
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ASHA 777 [7]
Answer:  " b = 3 ⅕ ; or, write as: 3.2  .
_____________________________________
Given:  "A = (1/2) * b * h " ;

 ↔  A = (b * h) / 2 

2A = (b*h) ;

2A/ h = b ;

↔ b = (2A) / h ;

Given A = 48 ;  and h = 30 ; Plug in these values; and solve for "b" ; 

→ b = (2*48) / 30 ; 

        = 96/30 ; 

        = (96÷6) / (30÷6) ;

→ b = 16/5 ;  = 3 <span>⅕ ; or, write as: 3.2 .
_______________________________</span>
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4 years ago
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If b=1.2, then the hourly growth rate is (1.2-1)=0.2=20%.
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4 years ago
What are the domain and range answers?
mart [117]

Answer:

idk

Step-by-step explanation:

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