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VLD [36.1K]
3 years ago
10

Are these arithmetic sequences:

Mathematics
1 answer:
VladimirAG [237]3 years ago
8 0

Answer:

1. No

2. Yes

3. Yes

4. Yes

Step-by-step explanation:

In 1. the difference between each term is not constant.(it goes up by, 2, 4, 6)

2. The terms increase by the same amount(it all goes up by 3)

3. The terms decrease by the same amount(it all goes down by 5)

4. The terms increase by the same amount(it all goes up by 6)

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Given: f(x) = 2x2 + 4x + 5,<br> f(a) = ?​
Drupady [299]

Answer:

f(a) = 2a² + 4a + 5

Step-by-step explanation:

7 0
3 years ago
10⁴ metres at a speed of 2.5 km/h.
Murrr4er [49]

Answer:

10000 = 10km

10 / 2.5 = 4 hours

7 0
2 years ago
Suppose that 1/2 of all cars sold at a Nissan dealer in a given year are Altimas, 1/3 are Maximas, and the rest are Sentras. Sup
IRINA_888 [86]

Answer:

(1) Not conditional, 5/8

(2) Not conditional, 1/12

(3) Conditional, 1/18

Step-by-step explanation:

Fraction of cars sold

Altima = 1/2

Maxima = 1/3

Sentra = 1 - (1/2 + 1/3) = 1 - 5/6 = (6 - 5)/6 = 1/6

Fraction of cars sold with moon roof

Altima = 3/4 × 1/2 = 3/8

Maxima = 1/2 × 1/3 = 1/6

Sentra = 1/2 × 1/6 = 1/12

(1) Probability (a randomly selected car has a moon roof) = 3/8 + 1/6 + 1/12 = (9+4+2)/24 = 15/24 = 5/8

(2) Probability (a randomly selected car has a moon roof given it is Sentra) = 1/12

(3) Probability (a randomly selected car is a Maxima if it has a moon roof) = 1/3 × 1/6 = 1/18

A conditional probability uses if (as a condition) in making statements or asking questions

An unconditional probability makes statement or ask question without the use of condition (if)

5 0
2 years ago
Each edge of a cube measures 8.9 cm.<br><br> What is the surface area of the cube?
Alina [70]
S.A=(s×s)×6
As a result, the surface area of the cube is 475.26 square cm. Hope it help!
4 0
2 years ago
Read 2 more answers
The function below crosses the x-axis once. y=3x^2-8x+8
Mekhanik [1.2K]
I believe it is false because it only passes through the y-axis not the x-axis.

6 0
3 years ago
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