−1 − (−z) where z= -2

Answer:

an=1*2.5^(n-1)

=2.5^(n-1)

Step-by-step explanation:

Complete question below:

What value, written as a decimal, should Lena use as the common ratio? Lena is asked to write an explicit formula for the graphed geometric sequence. On a coordinate plane, 3 points are plotted. The points are (1, 1), (2, 2.5), (3, 6.25).

Solution

Point (1, 1), (2, 2.5), (3, 6.25).

a=1

ar=2.5

ar^2=6.25

From ar and ar^2

r=6.25/2.5

=2.5

r=2.5

an=ar^(n-1)

Therefore, the explicit formula is

an=1*2.5^(n-1)

=2.5^(n-1)

—> 12.88 <—

A N S W E R

Answer:

seven hundred ninety-five billion eight hundred million nine hundred thirteen thousand seven hundred eighty-nine

Answer:

you have to read a source

Step-by-step explanation:

Then you can answer the question

Depends on what you read .

Answer:

4,260 feet below sea level (-4,260 feet)

Step-by-step explanation:

The submarine starts at sea level which should be 0 for elevation. And descending 7 feet per second for 2 minutes which means it went down 840 feet ( 7x60x2). Then 4 feet per second for 3 minutes which is 720 feet (4x60x3). Lastly 9 feet per second for 5 minutes which is 2,700 feet (9x60x5). Then you add up those three totals, 840 + 720 + 2,700 = 4,260. So the elevation is -4,260 feet, or 4,260 feet below sea level

The final elevation of the submarine was descended 2820 feet.

A set of rules determined by convention for giving plus or minus signs is called as sign convention.

Since 1 minute = 60 seconds

⇒ 2 minute = 120 seconds

⇒ 3 minute = 180 seconds

⇒ 5 minute = 300 seconds

Now it is given that,

First submarine descended at a rate of 7 feet per second for 2 minutes,

Distance, D₁ = - 7*120 feet

⇒ D₁ = - 840 feet

Then, submarine ascended at a rate of 4 feet per second for 3 minutes

Distance, D₂ = +4*180 feet

⇒ D₂ = +720 feet

Then, submarine descended at a rate of 9 feet per second for 5 minutes

Distance, D₃ = - 9*300 feet

⇒ D₃ = - 2700 feet

So, final elevation of the submarine = D₁ + D₂ + D₃

⇒ final elevation of the submarine =  - 840  +720 - 2700

⇒ final elevation of the submarine = -2820 feet

Thus, the final elevation of the submarine was descended 2820 feet.

To learn more about submarine  :

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Answer:

10

Step-by-step explanation:

If you use "p.e.m/d.a/s." you do parenthesis first if we subsutute "n" as 10, 10-9=1 then you eqation is 2(1)-1=1

2x1 is 2 now your eqation is 2-1=1

obviously 2-1 =1

Answer:

$7.81

Step-by-step explanation:

10-2.19

Answer:

The first scatterplot.

Step-by-step explanation:

All the numbers are plotted correctly.

Answer:

31,000 divided by 5 = 6200

Step-by-step explanation:

Answer:

15/11 or 1 and 4/11

Step-by-step explanation:

I like to use the trick "Keep it, change it, flip it." for division of fractons.  So keep 6/11 how it is, change the division sign to multiplication, and change 2/5 to 5/2, (Basically just flipping it.) Now multiply like how you would multiply fractions.  Multiply numerators , (6 and now 5) by eahother and denominators, (11 and now 2,)  by eachother as well.  You get 30/22, which simplifies to 15/11.  The mixed number version is 1 and 4/11 if you need that instead.    

I hope this helps so that you don't have to search it up again!  

Answer:

8:32

Step-by-step explanation:

1 x 8 = 8

so

4 x 8 = 32

I hope it helps......:))

Answer:

Step-by-step explanation:

67 people in total

29 are girls

13 boys prefer to hike

17 prefer to swim

30 would rather canoe

The missing value are shown below.

A two-way frequency table is a table that displays the frequencies of two categorical variables. The table has rows that represent one variable and columns that represent the other variable.

                      Girls   |   Boys   |    Total |

Swimming         12    |               |      17    |

| Hiking                      |      13     |             |

| Canoeing                 |     30    |              |

| Total                29    |      38    |     67    |

To fill in the missing values:

Learn more about Two way Frequency here:

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Answer:

m=2

Step-by-step explanation:

When you put a number into the inverse of a function (f^-1) you get the original number back.

Ex: f^-1(11) = (11-3)/2 = 4

f(4) = 2×4+3 = 11

So, f(-5)=-2

So, when x is -5,

f(x) = -2

f(x)=m(-5)+8

-2=m(-5) + 8

m=2

Answer:

4root under 5/5 is the correct answer

Answer:

2x +491/25

Step-by-step explanation: i learned in school mark me brainlest

Step-by-step explanation:

9. x°=90°-30°=60°

10. x°=180°-(40°+65°)=180°-105°=75°

11. x°=180°-(35°+45°)=180°-80°=100°

12. x°=180°-(25°+x°+65°)

x°=180°-90°-x°

2x°=90°

x°=45°; (x+65)°=110°

13. x°=180°-(48°+x°-44°)

x°=180°-4°-x°

2x°=176°

x°=88°; (x-44)°=44°

14. x°=180°-(73°+x°-11°)

x°=180°-62°-x°

2x°=118°

x°=59°; (x-11)°=48°

Answer:

Step-by-step explanation:

Rise over run is the slope, m

m=2/5

a)  the slope is 2/5 = .4 which is below the boundary guideline.  So no this is not with in carpenter's guidelines

b) the image below show a line with slope 2/5 but with intercept 3

c) the stairs can be draw on the line with rise 2 run 5   from the line.  see image

d)equation is in image

2.

a) count the squares

horizontal distance =3

vertical distance =3

b)  slope is vertical distance over horizontal distance  so m= 3/3 =1

THIS MIGHT NOT BE WHAT YOU ARE LOOKING FOR AND MIGHT NOT BE CORRECT! READ FIRST!

The answer is A. The slope of the line is rise/run = 4/2 = 2.1. This means that each kilometer costs $2.10. The y-intercept is 2.1, which means that the initial fee is $2.10. So the correct statement is: The slope is 2.1. This means that each kilometer costs $2.10.

The other statements are incorrect. The slope is not 5, so each kilometer does not cost $5. The y-intercept is not 5, so the ride does not last 5 kilometers. The y-intercept is the value of the function when the input is 0, which in this case is the initial fee of $2.10.

Answer:

1

Step-by-step explanation:

10 divided by 10

Answer:

y = 2... Maybe

Step-by-step explanation:

both 7,2 and 2,12 have to in them but I am not that smart when it comes to explaining

Answer:

y = -2x + 16

Step-by-step explanation:

\(Slope:\frac{y^{2}-y^{1} }{x^{2}-x^{1} }=\frac{12-2}{2-7}=\frac{10}{-5}=-2\)

\(y-intercept:y-y_{1}=m(x-x_{1} ) \\y-2=-2(x-7)\\y-2=-2x+14\\\)

Add 2 to both sides;

y = -2x + 16

The answer is 45

----------------------------------------------------------------------------------------------------------------

If you worked it out it would've been simple.

20x5=100.

9x5=45.

----------------------------------------------------------------------------------------------------------------

If you turn 20% into a decimal the it will become 20 itself then you can do 20x5 to get 100, then you can use the 9 and the 5 and multiply it together then your answer is 45.

Answer: B3 and C5

Step-by-step explanation: The prime factors of 15 are 3 and 5 (because 3×5=15, and 3 and 5 are prime numbers).

Mark me brainliest!

Answer:

B 3 and C 5

Step-by-step explanation:

Ours are mixed, but here.

Sorry, im late. If anyone cant see the picture then I wrote it out for you all.

(1/5)x goes to (x)/5

5 ÷x goes to 5/x

x/2 goes to (1/2)x

and

(x)(2) goes to 2x

Hope this helped.

Answer:

12 1/4

Step-by-step explanation:

When you add the widths of the frames together you get 48.5 and subtracting        that from 79 gives you 30.5 subtract 6 from that is 24.5 which is divided by2 to get 12.25 which when converted to a fraction is 12 1/4.

Answer:

1/4

Step-by-step explanation:

x^2+x+b= x^2+2*x+1/2+(1/2)^2= (x+1/2)^2

b= 1/4