3 years ago

Find the second and third term of the arithmetic sequence -7, _, _, -22, -27, ...

1 answer:

5 0

Okay. The pattern here is subtracting 5, because -22 - 5 = -27. -7 - 5 = -12 And -12 - 5 = -17. -12 and -17 go in the term of the sequence, because all of the numbers together have a difference of 5. The answer is D.

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Two Aps have the same first and last terms .The first Ap has 21 terms with a common difference of nine how many terms has the ot

Pani-rosa [81]

Answer:

46 terms

Step-by-step explanation:

a₁=b, a₂₁= bₙ, d₁=9, d₂=4

n=?

---------------

a₂₁= a₁+20d₁= a₁+20*9= a₁+180

bₙ= b₁+(n-1)d₂= a₁+4(n-1)

a₁+4(n-1)=a₁+180

4(n-1)=180

n-1= 180/4

n-1= 45

n=46

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3 years ago

Given the function f(x)=4x^8+7x^7+1x^6+1 What is the value of f(−2)?

qwelly [4]

f(x)=4x^8+7x^7+1x^6+
∴ f(-2)=4(-2)^8+7(-2)^7+1(-2)^6+1
∴ f(-2)=(4x256) + (7x-128) + (1x64) +1
∴ f(-2)=1024 - 896 + 64 +1
∴ f(-2)= 193

7 0

3 years ago

Study the red pre-image and the associated blue dilation image. The center of dilation is (2, 2).

lakkis [162]

Answer:

Step-by-step explanation:

4 0

3 years ago

There are five envelopes on a table. Four of the envelopes are marked 8, 2, 4 and 1. You are told that the mean of the numbers o

Lostsunrise [7]

Answer: 16

Step-by-step explanation:

3 0

2 years ago

Please help I dont understand

Arisa [49]

Answer:

38 degrees

Step-by-step explanation:

By the Law of Cosines,

5² = 3² + 7² - 2(3)(7) cos A

5² - 3² - 7² = -2(3)(7) cos A

-33 = -42 cos A

cos A = 33/42

A = arccos(33/42), which is about 38 degrees.

5 0

2 years ago