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devlian [24]
2 years ago
8

4. Find the area of this figure.

Mathematics
1 answer:
mihalych1998 [28]2 years ago
3 0

Answer:

I believe it is 100 ft

Step-by-step explanation:

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Horn lengths of Texas longhorn cattle are normally distributed. The mean horn spread is 60 inches with a standard deviation of 4
german

Answer:

range is  between 55.5 to 64.5

Step-by-step explanation:

Horn lengths of Texas longhorn cattle are normally distributed. The mean horn spread is 60 inches with a standard deviation of 4.5 inches

68% is 1 standard deviation from mean

To get the range of 1 standard deviation we add and subtract standard deviation from mean

mean = 60

standard deviation = 4.5

60 - 4.5= 55.5

60+4.5 = 64.5

1 standard deviation is between 55.5 to 64.5

That is 68% range is  between 55.5 to 64.5

8 0
3 years ago
D/dx(sin x/2+cos x) = (a + b cos x)/(2+cos x)^2 find a and b.​
Talja [164]

Answer:

a = 1 and b = 2

Step-by-step explanation:

Using the Quotient Rule>

d/dx[(sin x)/(2+cos x) ]

=   [(2 + cos x) * cosx -  sin x * - sin x)]  /  (2 + cos x)^2

= 2cos x + cos^2x + sin ^2 x) /  (2 + cos x)^2

But cos^2x + sin^2x = 1 so we have:

(1 +  2 cos x)  /   (2 + cos x)^2

- so a = 1 and b = 2.

7 0
3 years ago
Please answer!!! will give a lot of points and brainliest if i can figure that out
Law Incorporation [45]

Answer:

2\sqrt{14}

Step-by-step explanation:

To find, do 9^2-5^2=\sqrt{x\\}, so 81-25=56 which is 2\sqrt{14}

5 0
2 years ago
Read 2 more answers
Is (5x+4) a factor of (-21x^2-15-40x+5x^3
Tamiku [17]

Answer:

No. It is not.

Step-by-step explanation:

Dividing 5x³+21x²-40x-15 by 5x+4 gives x²+5x-4 with a remainder. Which means, 5x+4 is not a factor of 5x³+21x²-40x-15

6 0
3 years ago
I really need help with 23 through 30
BartSMP [9]

23. 120

24. 62

25. 84

26. 64

27. 121

28. 112

29. 65

30. 78

Brainiest answer please

4 0
3 years ago
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