3 years ago

Please help me, I will give you brainliest if it's right! <3 :)

Mathematics

1 answer:

stepladder [879]3 years ago

4 0

Answer:

-18

Step-by-step explanation:

-18

You might be interested in

Valarie used a laser to measure the average thickness of a human hair which is 0.0032 meters thick. A grain of sand is 0.0024 me

fredd [130]

Answer:

A human hair is 0.0008 meters thicker.

i think....

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Find the sum of the first 12 terms of the sequence. Show all work for full credit. 1, -4, -9, -14, . . . (2 points)

My name is Ann [436]

<u>Answer:</u>

$S_n=$ -348

<u>Step-by-step explanation:</u>

We are given the following arithmetic sequence and we are to find the sum of its first 12 terms:

1, -4, -9, -14, . . .

For that, we will use the formula for the sum of the arithmetic mean:

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

We know the value of the first term ( $a_n$ ) but we need to find the value of $a_{12}$ . So we will use the following formula:

$a_{12}=a_1+(n-1)d$

$a_{12}=(-4)+(12-1)(5)$

$a_{12}=-59$

Substituting these values in the sum formula to get:

$S_n=\frac{12}{2} (1+(-59))$

$S_n=$ -348

4 0

4 years ago

Read 2 more answers

A line is defined by the equation y=2/3x-6. The line passes through a point whose y-coordinate is 0. What is the x- coordinate o

NISA [10]

Answer: Its 9

Thats the answer

5 0

3 years ago

Did I get this right? If I did t could someone explain it to me

Kisachek [45]

Answer:

Yes, you are correct.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Pleaseeeeeeeee helpppppppppppp

Rainbow [258]

Answer:

I believe your have to find the linear lines in order to find the answer.

Step-by-step explanation:

5 0

3 years ago