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3 years ago

Find the sum. Enter your answer in the box below as a fraction, using the slash mark (/) for the fraction bar. 7/17 + 9 /17

Mathematics

1 answer:

scoundrel [369]3 years ago

3 0

16/17 is the answer. you just add the numerators since they have common denominators!

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Write the first five terms of the sequence defined by the recursive formula

stepan [7]

Answer:

The correct answer option is: $S_9=\frac{9}{2} (2+26)$

Step-by-step explanation:

We know that,

the sum of the first $n$ terms of an Arithmetic Sequence is given by:

$S_9=\frac{n(a_1+a_n)}{2}$

where $n$ is the number of terms,

$a_1$ is the first term of the sequence; and

$a_n$ is the first term of the sequence.

So for $a_n=3n-1$ ,

$a_1=3(1)-1=2$

and

$a_9=3(9)-1=26$

Putting these values in the formula to get:

$S_9=\frac{9(a_1+a_9)}{2}$

$S_9=\frac{9(2+26)}{2} \\\\S_9=\frac{9}{2} (2+26)$

First five terms:

$a_1=3(1)-1=2$

$S_1=\frac{1(2+2)}{2}$ =2

$a_2=3(2)-1=5$

$S_2=\frac{2(2+5)}{2}$ =7

$a_3=3(3)-1=8$

$S_2=\frac{3(2+8)}{2}$ =15

$a_4=3(4)-1=11$

$S_4=\frac{4(2+11)}{2}$ =26

$a_5=3(5)-1=14$

$S_5=\frac{5(2+14)}{2}$ =40

8 0

3 years ago

Read 2 more answers

On a coordinate plane, the vertices of a

leonid [27]

Using the 2x+2y=P formula, it equals 34

3 0

3 years ago

The ratio of the perimeters of two rectangles is 4 to 7. The perimeter of the larger rectangle is 42 inches. What is the perimet

Mumz [18]

In this question, there are numerous information's of immense important already given. Based on those given information's the answer to the question can be easily deduced.
Ratio of the perimeter of two rectangles = 4:7
Perimeter of the larger rectangle = 42 inches
Let us assume the common ratio = x
Then
7x = 42
x = 42/7
= 6
Then
Perimeter of the smaller rectangle = 4 * 6 inches
= 24 inches.
So the perimeter of the smaller rectangle is 24 inches. I hope the procedure and the answer is clear enough for you to understand. Based on this procedure, you can attempt similar problems without requiring any outside help.

4 0

3 years ago

Write (7 + 3) + (6 - ) as a complex number in standard form.

Y_Kistochka [10]

Step-by-step explanation:

(7 + 3) + (6 -)

= 7 - 6 + 3

= 1 + 3

= 4

8 0

2 years ago

Marianne is completing a 4-mile route for

Bogdan [553]

Answer:

For 1 miles distance: 7/10 of a mile she runs and 3/10 she walks.

For 4 miles distance (4 times the previous distance) she will run:

4*(7/10) = 18/20 = 2.8 miles

and walk:

4*(3/10) = 12/10 = 1.2 miles.

3 0

2 years ago

Find the sum. Enter your answer in the box below as a fraction, using the slash mark (/) for the fraction bar. 7/17 + 9 /17​

Find the sum. Enter your answer in the box below as a fraction, using the slash mark (/) for the fraction bar. 7/17 + 9 /17