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myrzilka [38]
3 years ago
11

Summation notation help!!!!

Mathematics
1 answer:
solniwko [45]3 years ago
4 0

3 is always on the numerator. It is not effected by a power. The answer has to be something that leaves the numerator alone. That means that B is not correct.

The answer is going to be something that makes the denominator 1 when n = 1. That's going to be the answer to the question, because the first term in the sequence is just 3. The denominator must be 1. (not zero).

D is not the answer, because 3/5^1 = 3/5, so D is wrong.

A is not going to get us anywhere either. 3/5^(1 + 1) = 3/5^2 = 3/25 which is not the first term.

The only choice we have left is C. It must be the answer. 3/5^(1 - 1) = 3/5^0 = 3/1 = 3. There's your answer. Note anything raised to the zero power = 1.

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. A car travels 605 miles in 11 hours. What is the average number of miles traveled per hour?
liberstina [14]

Answer:

55 miles per hour

Step-by-step explanation: You divide by the speed

605 miles/ (55 miles per hour)= 11 hours

hope this helped

4 0
3 years ago
A 23 ft pixie stick is leaned up against a can of Monster. The bottom of the pixie stick makes a 31 degree angle with the ground
SCORPION-xisa [38]

The structure makes a right triangle with the hypotenuse of 23 ft.

To find the height of the can we need length along y or...

sin(31 degrees) x 23 ft = 11.85 ft approx.

answer: 11.85 ft approx.

4 0
3 years ago
What is an equation of the line that passes through the points (0, 0)and (5, 2)?
beks73 [17]

Answer:

5y - 2x = 0

Step-by-step explanation:

Equation of line is given by,

y - y1 = ( x - x1 ) ( y2 - y1)/ (x2 - x1 )

y - 0 = ( x - 0 ) ( 2 - 0 )/ ( 5 - 0 )

y = 2x /5

5y = 2x

5y - 2x = 0

This is the required equation.

8 0
3 years ago
What is (4a²)³÷8a²? can you please answer in normal number form (not like 3²)
AleksandrR [38]

Answer:

8a^4

Step-by-step explanation:

Hello! (4a^2)^3=4\cdot4\cdot4\cdot a^2\cdot a^2\cdot a^2=64a^6because if you multiply numbers with exponents you add the exponents.

Now we've got\frac{64a^6}{8a^2}=8a^4.

Sadly it has to be in exponential form. You can substitute a into the equation if you know a.

3 0
3 years ago
Find the product of 11/2 with the quotient of 3/7 and 3/10
trasher [3.6K]


(11/2) x ((3/7) / (3/10)

(11/2) x (3/7) x (10/3)

330/42

7 6/7 or 7.857142857 ( or 7.86 rounded to nearest hundredth)

4 0
3 years ago
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