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cluponka [151]
2 years ago
8

Please help me quickly, timed test:(​

Mathematics
2 answers:
Dennis_Churaev [7]2 years ago
7 0

Answer:

1 & 7

Step-by-step explanation:

I guessed. Good Luck!

masya89 [10]2 years ago
6 0

Answer:

Angles 1 and 5

Step-by-step explanation:

Corresponding angles: Angles that are in the "same place" from the transversal.

So, angles 1 and 5 are in the same spots, because they are both the top left of the transversal.

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Here are some values of sequence Q. Write a recursive definition for the sequence.
Rashid [163]

Answer: Q(n) = Q(n - 1) + 2.5

Step-by-step explanation:

We have 3 values of the sequence Q(n)

These values are:

Q(1) = 3

Q(3) = 8

Q(7) = 18

I would think that this is a geometric sequence.

Remember that the equation for the n-th term of a geometric sequence is:

A(n) = A(1)*r^(n-1)

where r is a constant, and A(1) is the first term of the sequence.

If we rewrite the terms that we know of Q(n) in this way we get:

Q(3) = Q(1)*r^(3 - 1) = 3*r^2 = 8

Q(7) = Q(1)*r^(7 - 1) = 3*r^6 = 18

Then we have two equations:

3*r^2 = 8

3*r^6 = 18

We should see if r is the same for both equations:

in the first one we get:

r^2 = 8/3

r = (8/3)^(1/2) = 1.63

and in the other equation we get:

r^6 = 18/3

r = (18/3)^(1/6) = 1.34

Then this is not a geometric sequence.

Now let's see if this is an arithmetic sequence.

The n-th term of an arithmetic sequence is written as:

A(n) = A(1) + (n - 1)*d

where d is a constant.

If we write the terms of Q(n) that we know in this way we get:

Q(3) = Q(1) + (3 - 1)*d = 3 + 2*d = 8

Q(7) = Q(1) + (7 - 1)*d = 3 + 6*d = 18

We need to see if d is the same value for both equations.

in the first one we get:

3 + 2*d = 8

2*d = 8 - 3 = 5

d = 5/2 = 2.5

In the second equation we get:

3 + 6*d = 18

6*d = 18 - 3 = 15

d = 15/6 = 2.5

d is the same for both terms, then this is an arithmetic sequence.

An arithmetic sequence is a sequence where the difference between any two consecutive terms is always the same value (d)

Then the recursive relation is written as:

A(n) = A(n - 1) + d

Then the recursive relation for Q is:

Q(n) = Q(n - 1) + 2.5

4 0
3 years ago
I really need help to graduate!
lisov135 [29]

Answer:

option 1 is correct:

y = -5cos(2x - π)

5 0
2 years ago
The angles of a quadrilateral measure 80° 100° 100° and 80° In this order what kind of quadrilateral has this shape?
Masja [62]
The answer would be a trapezoid
8 0
2 years ago
Read 2 more answers
Franco played computer chess for 3 hours. Lian played computer chess for 150 minutes. Compare the times spent playing computer c
goldenfox [79]
Franco played for 30 minutes longer than Lian.
3 0
2 years ago
Read 2 more answers
Twenty-one people brought a chocolate cake to a community potluck dinner each cake was split into 8 slices how many slices of ch
dexar [7]

Answer:

168

Step-by-step explanation:

Multiply 21 by 8 so

21 × 8 = 168

6 0
3 years ago
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