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2 years ago

Find the 18th term of the arithmetic sequence whose common difference is d = 2 and whose first term is a, =5.

Mathematics

1 answer:

ikadub [295]2 years ago

7 0

Answer:

a=5

d=2

then t18=?

now we khow that

t18=a+(n-1)d

= 5+(18-1)2

= 5+17×2

=5+34

=39ans

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Ber [7]

The answer would be C. because you have to multiply all of the numbers and then divide by the 90 degree angle.

5 0

2 years ago

A town’s January high temperatures average 36 degrees (F) with a standard deviation of 10 degrees while in July the mean high

n200080 [17]

Answer:

55 degrees is more unusual in July as it is away from mean temperature as compared to January.

Step-by-step explanation:

We are given the following information in the question:

January:

Mean, μ = 36 degrees

Standard Deviation, σ = 10 degrees

July:

Mean, μ = 74 degrees

Standard Deviation, σ = 8 degrees

We calculate z scores corresponding to x = 55.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

January:

$z_{score} = \displaystyle\frac{55-36}{10} = 1.9$

July:

$z_{score} = \displaystyle\frac{55-74}{8} = -2.375$

Thus, 55 degrees is more unusual in July as it is away from mean temperature as compared to January.

3 0

3 years ago

Find the value of x and find whether the angles or supplementary or complementary.

Alborosie

Answer:

1) x = 31

2) Both angles add up to be a supplementary angle (an angle who's sum is 180° altogether).

Step-by-step explanation:

1) Since both angles add up to be a supplementary,

→ equation 1 + equation 2 = 180

→ (3x + 25) + (2x) = 180

Solving by applying algebra will give the answer "x = 31".

Hope this helps!

3 0

2 years ago

Read 2 more answers

Which ordered pair is a solution of the equation?<br> 3r - y = 13

Svetach [21]

Answer:

(0,-13)(1,-10)(2,-7)

Step-by-step explanation:

It has three values for x

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2 years ago

Solve the proportion below. 9/x=1/2

KiRa [710]

Answer:

X=18

Step-by-step explanation:

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Here you have to use cross multiplication

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3 years ago