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attashe74 [19]
2 years ago
10

This is a problem I need help with​

Mathematics
2 answers:
Reika [66]2 years ago
6 0

Answer:

C) neither

Step-by-step explanation:

they add up to 190

complementary adds up to 90

supplementary adds up to 180

NISA [10]2 years ago
3 0

Answer:

supplementary

Step-by-step explanation:

sum = 180

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The measure of an exterior angle of a triangle is zº. The measure of the adjacent interior angle is at least twice 2". Which of
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The best of me and said that you

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2 years ago
An arithmetic sequence is defined by the general term tn = -5 + (n - 1)78, where n ∈N and n ≥ 1. What is the recursive formula o
Gnoma [55]

Answer:

C

Step-by-step explanation:

In general for arithmetic sequences, recursive formulas are of the form

aₙ = aₙ₋₁ + d,

and the explicit formula (like tₙ in your problem), are of the form

aₙ = a₁ + (n - 1)d,

where d is the common difference. So converting between the two of these isn't so bad. In this case, your problem wants you to have an idea of what t₁ is (well, every answer says it's -5, so there you are) and what tₙ₊₁ is. Using the formulas above and your given tₙ = -5 + (n - 1)78, we can see that the common difference is 78, so no matter what we get ourselves into, the constant being added on at the end should be 78. That automatically throws out answer choice D.

But to narrow it down between the rest of them, you want to use the general form for the recursive formula and substitute (n + 1) for every instance of n. This will let you find tₙ₊₁ to match the requirements of your answer choices. So

tₙ₊₁ = t₍ₙ₊₁₎₋₁ + d ... Simplify the subscript

tₙ₊₁ = tₙ + d

Therefore, your formula for tₙ₊₁ = tₙ + 78, which is answer choice C.

6 0
2 years ago
Read 2 more answers
I GIVE CROWN <br><br> HELP ONLY SERIOUS HELP NOT FOR POINTS
marin [14]
The answer will be -1/9

6 0
2 years ago
a post is driven into the ground. the first strike drives the post 30 inches into the ground. The next strikes drives the post 2
nevsk [136]
Your answer should be 156 inches
3 0
3 years ago
Read 2 more answers
Which expression can be used to find measure angle R
Novay_Z [31]

Answer:

cos-1(-4/14)

Step-by-step explanation:

If

4.5=r

3.5=s

2=t

By law of cosines:

r^{2}=s^{2}+t^{2}  -2st cosR\\\\CosR= \frac{r^{2} -s^{2} -t^{2} }{-2st}  \\\\R=cos^{-1} (\frac{(4.5)^{2}-3.5^{2} -2^{2}  }{-2(3.5)(2)} )\\R= cos^{-1} (-\frac{4}{14}  )

4 0
2 years ago
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