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3 years ago

Need the answer to this thank you!

Mathematics

1 answer:

Sholpan [36]3 years ago

7 0

Answer:

n = 4

Step-by-step explanation:

Use the explicit formula of a arthmetic sequence: an = a1 + d(n - 1)

a1 = -70

d = -10

an = -100

Do all of the steps and plug all the numbers with the formula.

So -100 = -70 - 10(n - 1)

-100 = -70 - 10n + 10

-100 = -60 - 10n

-100 + 60 = -40

-40 = -10n

-40/-10n = -10n/10

n = 4

So the final answer is n = 4. Just follow all of the steps and you will understand how I got my answer. Hope it helped!

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Anyone have any idea what the pattern may be? Need help ASAP!

Anna007 [38]

Answer:

21, 34, 55

Step-by-step explanation:

13+8=21

21+13=34

34+21=55

4 0

2 years ago

Anyone know the answer?

Zepler [3.9K]

If you look from the points at angle 73, to 42, to 131, to z, the shape makes a quadrilateral.
Since the total of the interior angles in a quadrilateral add up to 360 you make an equation:

360 = 131 + 73 + 42 + 7 + x
Re-arrange the equation to get the x alone, by subtracting:
360 - 131 - 73 - 42 = x
114 = x

So x = 114 degrees<span />

7 0

3 years ago

A tourist starts to walk up a mountain path that is 31 miles long at the rate of 4 miles per hour. After walking for a while, he

Sunny_sXe [5.5K]

Answer:

He pays to the cab driver for 25 miles.

Step-by-step explanation:

Consider the provided information.

Let us consider he walks x miles at the rate of 4 miles per hour.

As we know $Time=\frac{Distance}{Speed}$

Therefore, time taken is: $Time=\frac{x}{4}$

He get a taxi for (31-x) miles at the rate of 50 miles per hour.

Therefore, time taken is: $Time=\frac{31-x}{50}$

It took 2 hours after he started.

That means the sum of time take is 2 hours.

$\frac{x}{4}+\frac{31-x}{50}=2$

$\frac{25x+62-2x}{100}= 2$

$23x+62= 200$

$23x= 138$

$x= 6$

Hence he walk 6 miles and he get a taxi for 31-6=25 miles.

He pays to the cab driver for 25 miles.

5 0

3 years ago

Which statement describes a unit rate?

Artyom0805 [142]

Answer:

Step-by-step explanation:

Because it is saying he drove 45 miles per hour.

3 0

2 years ago

Read 2 more answers

I need help asap thanks

Sunny_sXe [5.5K]

$V=hb$

$h= \frac V b$

$h = \dfrac{ x^3 - 3x^2 + 5x - 3}{x^2 -2}$

Expressing that as a quotient and remainder,

$h =x - 3 = \dfrac{ 7 x - 9} { x^2 - 2}$

First choice.

7 0

2 years ago

Need the answer to​ this thank you!

Need the answer to this thank you!