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bezimeni [28]
3 years ago
13

3+1 + - + ... ? What is the sum of the first 7 terms of this geometric series: 3+1+ 3

Mathematics
1 answer:
mote1985 [20]3 years ago
8 0

Answer:

15

Step-by-step explanation:

3+1+3+1+3+1+3= 15 this is what it would look like if you write it out. To save time do 3 times 4 to get 12 and then just add three ones to 12 to get 15.

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+8.2+​(−7.9​)=
vichka [17]

Answer:

Step-by-step explanation:

7

6-

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Transla

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-32

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À 3 4 5 6 7

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8 0
3 years ago
3 elevenths divided by 3 elevenths
WARRIOR [948]

Answer:

1

Step-by-step explanation:

3/11 *3/11

2nd 3/11 flips over. Then multiply. Then u get 33/33 which equals 1

8 0
2 years ago
Find the least common denominators of these two rational experssions -1/y and 2/5y
algol13
The least common denominator is 5y, and can be obtained by multiplying 
-1/y by 5/5 to get -5/5y. 

If we add the numbers using the least common denominator, we get:
-5/5y + 2/5y = -3/5y
6 0
3 years ago
How to factor x^2-2x-15
olga2289 [7]

Answer:

(x - 5)(x + 3)

Step-by-step explanation:

Given

x² - 2x - 15

Consider the factors of the constant term (- 15) which sum to give the coefficient of the x- term (- 2)

The factors are - 5 and + 3, since

- 5 × 3 = - 15 and - 5 + 3 = - 2, thus

(x - 5)(x + 3) ← in factored form

6 0
3 years ago
What is the value of f(2) the function f(x)=4x^2-5x+1
snow_tiger [21]

Answer: f(2)=7

Step-by-step explanation:

F(2)= 4x2^2-5x2+1

4x4-10+1

6+1=7

7 0
2 years ago
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