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3 years ago

Which of the following is an arithmetic sequence?

Mathematics

1 answer:

ZanzabumX [31]3 years ago

3 0

Answer:

B is an arithmetic sequence because the number that you add or subtract between each number has to match

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Rewrite the following polynomial in standard form

blagie [28]

Answer:

-7x³ - ⅑x - 1

Step-by-step explanation:

A polynomial written in standard form would be written in such a way that the term with the highest degree comes first, followed by the second highest and so on, then what comes last is the constant.

Given the polynomial -7x³ - 1 - ⅑x, -7x³ with the highest degree comes first, followed by -⅑x, and then the constant, -1, comes last.

Thus, we would have:

✅-7x³ - ⅑x - 1

8 0

2 years ago

A yield sign measures 30 inches on all three sides. what is the area of the sign

Nookie1986 [14]

Answer:

450

Step-by-step explanation:

To find an area of the triangle, you must first multiply the base and the height.

5 0

3 years ago

Help!! i need to get this done soon

Aliun [14]

Answer: i think the answer is (A)

Step-by-step explanation:

I recalculated and the other person was correct, sorry for the mix up

7 0

2 years ago

Read 2 more answers

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the pla

forsale [732]

Answer:

Speed at Equator = 463.97 meters per second

Centripetal Acceleration at Equator = $3.37*10^{-2}$ meters per second squared

Speed at 30 degrees north of equator = 401.79 meters per second

Centripetal Acceleration at 30 degrees north of equator = $2.92*10^{-2}$ meters per second squared

Step-by-step explanation:

The formula is:

$v=\frac{2 \pi R}{T}$

Where

v is speed

R is radius

T is time

and another formula for centripetal acceleration:

$a_c=\frac{4 \pi^{2} R}{T^2}$

Now,

at equator, the radius is radius of earth (given), time in seconds is

T = 24 * 60 * 60 = 86,400

THus,

$v_E=\frac{2 \pi (6.38*10^{6}}{86,400}=463.97$

Speed at Equator = 463.97 meters per second

Centripetal Acceleration:

$a_{cE}=\frac{v_E^2}{R_E}=\frac{463.97}{6.38*10^{6}}=3.37*10^{-2}$

Centripetal Acceleration at Equator = $3.37*10^{-2}$ meters per second squared

At 30.0° north of the equator:

$R_N=R_E Cos (30)= (6.38*10^6)Cos(30)=5.53*10^6$

Now,

Speed = $v_{30N}=\frac{2 \pi (5.53*10^6)}{86,400}=401.79$

Speed at 30 degrees north of equator = 401.79 meters per second

Centripetal Acceleration:

$a_{30N}=\frac{v_E^2}{R_E}=\frac{401.79}{5.53*10^6}=2.92*10^{-2}$

Centripetal Acceleration at 30 degrees north of equator = $2.92*10^{-2}$ meters per second squared

4 0

3 years ago

Help!!!!!!!!!!!!!!! A square tabletop has side lengths of (4x − 8) units. Enter a polynomial that represents the area of the tab

kherson [118]

Answer: $16x^{2}-64x+64$

Step-by-step explanation:

1. The formula for calculate th area of a square is shown below:

$A=s^{2}$

Where s is the side of the square.

2. Therefore, if the square tabletop has side lengths of (4x-8) units you have:

$(4x-8)^{2}$

3. By definition, the square of a binomial is always a trinomial:

$(a-b)^{2}=a^{2}-2ab+b^{2}$

4. Then, you obtain:

$(4x-8)^{2}=(4x)^{2}-2(4x)(-8)+8^{2}=16x^{2}-64x+64$

7 0

3 years ago