All categories

3 years ago

FIRST-PERSON BRAINLIEST Which algebraic expression represents “the sum of a number and 9”?

Mathematics

1 answer:

Dahasolnce [82]3 years ago

7 0

Answer:

Step-by-step explanation:

The sum of a number and 9 is adding of any variable to 9.

E.g the sum of 8 and 7

8+7=15

We can also have the sum of two unknown numbers, we can let the first number be x and the second number be y, then the sum of the two unknown will be (x+y).

So, let apply this to the question

The sum of a number and 9, since we don't the number, let the number be n, then the sum of the number and 9 will be (n+9)

Then the correct option is B which is n+9

You might be interested in

PLEASE HELP

Semenov [28]

Answer:

$\sum\limits^7_{n=1}(4n - 3)$

Step-by-step explanation:

Given

$1 + 5 + 9 + .....$

Required

Write a definition

First, we derive a formula for the series using:

$T_n = a + (n - 1)d$

From the attached data;

$a = 1$

$d = 5 - 1 = 4$

So:

$T_n = a + (n - 1)d$

$T_n = 1 + (n - 1) * 4$

$T_n = 1 + 4n - 4$

Collect like terms

$T_n = 4n - 4+1$

$T_n = 4n -3$

So, the definition for first 7 terms is:

$\sum\limits^7_{n=1}(4n - 3)$

6 0

3 years ago

Shannon is putting a fence around the garden ,except where there is a gate that is 3 feet wide .one foot of the fence cost $43.

AfilCa [17]

43 x 3 = 129 divided by 2 = 64.5

7 0

3 years ago

Read 2 more answers

Solve the system algebraically. Check your work.

Luden [163]

answer.

Answer:

x=2 and y=0 is the required result.

Step-by-step explanation:

We have been given system of equations:

5x+2y=105x+2y=10 (1)

And 3x+2y=63x+2y=6 (2)

We will use elimination method:

Multiply 1st equation by 3 and 2nd equation by 5 we get:

15x+6y=3015x+6y=30 (3)

15x+10y=3015x+10y=30 (4)

Now subtract (4) from (3) we get:

-4y=0−4y=0

y=0y=0

Now, put y=0 in (1) equation:

5x+2(0)=105x+2(0)=10

5x=105x=10

x=2x=2

Hence, x=2 and y=0

8 0

3 years ago

Find the value of x in the triangle shown below 4 3

Solnce55 [7]

Answer: 5

Step-by-step explanation: I took the test

8 0

3 years ago

F(x) = x2. What is g(x)?

Anarel [89]

Answer:

i think is is c but I not sure.

Step-by-step explanation:

6 0

2 years ago