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Viefleur [7K]
2 years ago
15

What is the value of the expression (30.72 × .05) - 1.42

Mathematics
2 answers:
Alexeev081 [22]2 years ago
8 0

Your answer is 0.116

Step-by-step explanation:

kotykmax [81]2 years ago
7 0

Answer:

0.116

Step-by-step explanation:

(30.72*0.05)-1.42\\1.536-1.42=\\0.116

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Evaluate and simplify tan 15º.
dimulka [17.4K]
Tan(15) = tan(45 - 30) 

= [tan(45) - tan(30) ] / [ 1 + tan(30)tan(45)] 

= (1 - 1/sqrt(3)) /(1 + 1/sqrt(3)) 

= (sqrt(3) - 1)/(sqrt(3) + 1) 

= (sqrt(3) - 1)^2 /(3 - 1)

 = 1/2 [3 + 1 - 2sqrt(3) ] 

= (2 - sqrt(3) )

= 0.27 is your answer
6 0
3 years ago
What is ( n^2+6n-4)(2n-4)
ludmilkaskok [199]

Answer: 2

3

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3

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6

Step-by-step explanation:

3 0
2 years ago
Mr. Sonny's science class is calculating the average number of blinks per minute. Jan blinks 126 times in 7 minutes. What is her
vlabodo [156]
18 blinks per min since 126 divided by 7 equals 18
3 0
2 years ago
Read 2 more answers
COMPLETE THE SQUARE TO REWRITE Y=X>2+8X+3 IN VERTEX FORM , AND THEN IDENTIFY THE MINIMUN Y-VALUE OF THE FUNCTION
kicyunya [14]

Answer:

The vertex form is y = (x + 4)² - 13

The minimum value of the function is -13

Step-by-step explanation:

∵ y = x² + 8x + 3

∵ 8x ÷ 2 = 4x ⇒ (x) × (4)

∴ We need ⇒ x² + 8x + 16 to be completed square

∴ y = (x² + 8x + 16) - 16 + 3 ⇒ we add 16 and subtract 16

∴ y = (x + 4)² - 13 ⇒ vertex form

∵ The vertex form is (x - a)² + b

Where a is the x-coordinate of the minimum point and b is y-coordinate of the minimum point (b is the minimum value of the function)

∴ The minimum value is -13

6 0
3 years ago
Find the first three iterates of the function f(z)=z2+c with a value of c=1+2i and an initial value of z0=0
aalyn [17]

Answer:

14x

Step-by-step explanation:

multiply the 2i by the 0 eulogistic quotient

7 0
3 years ago
Read 2 more answers
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