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mr Goodwill [35]
2 years ago
14

Can anyone explain step by step how to get this answer? Will mark branliest!!

Mathematics
2 answers:
Y_Kistochka [10]2 years ago
4 0

Answer:

Step-by-step explanation:

28°

guajiro [1.7K]2 years ago
3 0

Answer:

Step-by-step explanation:

A = cos⁻¹((12.5² + 30.5² - 20.3²) / (2(12.5)(30.5)))

A = cos⁻¹((156.25 + 930.25 - 412.09) / (2(12.5)(30.5)))

A = cos⁻¹(674.41 / 762.5)

A = cos⁻¹0.88447213...

A = 27.8133685...

A = 27.8°

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Find the formula for the nth term of the arithmetic sequence -39, 61, 161, 261, ...
maksim [4K]
<h3>Given that it is arithmetic</h3>

d = a_{2} - a_{1} = 61 - ( - 39) = 100

a_{n} = a_{1} + (n - 1)d \\ a_{n} = - 39+ 100 (n - 1) \\ a_{n} =  - 39 + 100n - 100 \\ a_{n} =  - 139 + 100n

6 0
1 year ago
a bird is in a tree 30 feet off the ground and drops at Twigs at lands on a rose bush 25 ft below. the function h(t)=-16t^2+30,
Serggg [28]
Answer: It will land on the bush after 1.25 seconds.

First, we will start with what we are given the equation: h(t) = -16t^2 + 30

Now, we should input a 5 for the h(t) because we want the seconds that will give us a height of 5 seconds.

5 = -16t^2 + 30

Solve the equation:
0 = -16t^2 + 25

To solve this, you could use the quadratic formula or factor out a -1 and you will have the difference of two squares.

Either way the answer is 1.25 seconds.
5 0
3 years ago
Read 2 more answers
10 - w = 1.5 Find w.​
anzhelika [568]

Answer:

8.5

Step-by-step explanation:

w is 8.5

6 0
3 years ago
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PLEASE HELP QUICK!! :(
Law Incorporation [45]

Answer:

Step-by-step explanation:

i think last and first one..

6 0
3 years ago
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5a+5b+5c=-20<br> 4a+3b+3c=-6<br> -4a+3b+3c=9
tekilochka [14]
For 5a+5b+5c=-20

A= -4 - b - c

B= -4 - a - c

C= -4 - a - b

———————————

4a+3b+3c=-6

A= -3/2 - 3b/4 - 3c/4

B= -2 - 4a/3 - c

C= -2 - 4a/3 - b

———————————

-4a+3b+3c=9

A= -9/4 + 3b/4 + 3c/4

B= 3 + 4a/3 - c

C= 3 + 4a/3 - b
4 0
3 years ago
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