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sdas [7]
3 years ago
14

2.8×7.9 estimate product

Mathematics
2 answers:
alexdok [17]3 years ago
5 0
20 is the estimate
22.12 is answer
Ainat [17]3 years ago
4 0

Answer:

22.12

Step-by-step explanation:

2.8 multply 7.9

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Factor this polynomial expression.
Sauron [17]

Answer:

The answer is A. (x-6)(x-6)

Step-by-step explanation:

x^2 -12x + 36

x^2 - (6+6) x+36

x^2 - 6x - 6x + 36

x( x - 6) -6(x-6)

(x-6)(x-6)

8 0
4 years ago
(GIVING BRAINLIEST!!)
Montano1993 [528]

Answer:

6450

Step-by-step explanation:

1kg = 1000g

6.45 x 1000 = 6450

3 0
3 years ago
Find the exact value of tan 15 degrees
pentagon [3]
<span>tan(15) = 
sin(15) / cos(15) = 
sin(45 - 30) / cos(45 - 30) = 
[ sin(45)cos(30) - sin(30)cos(45) ] / [ cos(45)cos(30) + sin(45)sin(30)] 

Since sin(45) = cos(45) = √2/2, you can just factor that out from the top and bottom 
[ cos(30) - sin(30) ] / [ cos(30) + sin(30)] 
[ √3/2 - 1/2 ] / [ √3/2 + 1/2] 
(√3 - 1) / (√3 + 1) 
(√3 - 1)^2 / (√3+1)(√3 - 1) 
(√3 - 1)^2 / (3 - 1) 
(3 - 2√3 +1) / 2 
2 - √3 

There's also a formula for tan(a-b), but I couldn't remember it off hand.</span>
4 0
3 years ago
What is the y-intercept of the line describe by the equation below? Y=5x-22
dexar [7]

Answer:

The y intercept is (0,-22)

Step-by-step explanation:

The y intercept is the value when x =0

Y=5x-22

y = 5*0 -22

y = -22

The y intercept is (0,-22)

8 0
3 years ago
This it to the online school kids
MA_775_DIABLO [31]

Answer:

it averages about 8AM to 11Am so 3 hours

Step-by-step explanation:

3 0
3 years ago
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