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3 years ago

8

three terms of an arithmetic sequence are shown below. Which recursive formula defines the sequence? f(1) = 6, f(4) = 12, f(7) =

18 f (n + 1) = f(n) + 6

2 answers:

Rainbow [258]3 years ago

6 0

The answer is f<span>(</span>n<span> + 1) = </span>f(n<span>) + 2</span>

Viefleur [7K]3 years ago

4 0

A = 6
tn = a + (n - 1)d
t4 = 6 + 3d = 12
3d = 12 - 6 = 6
d = 6/3 = 2
f(n + 1) = f(n) + 2

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Out of the sampled 30 employees 22 worked for at least 10 years.
point estimate (p^) = 22/30 = 0.73

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3 years ago

WILL MAKR BRAINLIEST Jack jogs and rides his bike for aWrite a pair of linear equations to show the relationship between the num

PilotLPTM [1.2K]

Answer:

The pair of linear equations is

x+y = 75

y+15 = x

Step-by-step explanation:

x = number of minutes Jack jogs

y = number of minutes Jack bikes

Total of 75 minutes for jogging and biking

x+y = 75

He bikes for 15 minutes longer than he jogs

y+15 = x

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x+y = 75

y+15 = x

8 0

3 years ago

Read 2 more answers

A cylinder has a volume of 200 cm³. If the height of the cylinder is 10 cm, what is the radius of the cylinder

AlekseyPX

Answer:

2.5

Step-by-step explanation:

The radius of a cylinder formula is

R = √(V / π × h)

Plug in

R = √(200 / 3.14 × 10)

So . .

R = √(6.4)

R = 2.5

( I rounded to the tenth decimal place so you know!)

8 0

2 years ago

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MatroZZZ [7]

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3 years ago

PLEASEEEE HELPPP MEEE <br> 6 and 7 PLEASE

Nitella [24]

Answer:

Question 6

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7

The width is 2x.

Step-by-step explanation:

Question 6)

Expand

$(5a+2)(a+4)$

solving to the expand

$(5a+2)(a+4)$

$\mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

$a=5a,\:b=2,\:c=a,\:d=4$

so the expression becomes

$=5aa+5a\cdot \:4+2a+2\cdot \:4$

$=5aa+5\cdot \:4a+2a+2\cdot \:4$

$=5a^2+20a+2a+8$

adding similar elements: 20a+2a=22a

$=5a^2+22a+8$

Hence,

$\left(5a+2\right)\left(a+4\right)=\:5a^2+22a+8$

Question 7)

Given

$A\:=\:8x^2$

$l=4x$

Using the formula

width = Area/Length

$=\:\frac{8x^2}{4x}$

$=2x$ ∵ $\mathrm{Divide\:the\:numbers:}\:\frac{8}{4}=2$

Therefore, the width is 2x.

5 0

3 years ago