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3 years ago

The values of x and y vary directly

Mathematics

2 answers:

inna [77]3 years ago

7 0

Answer:

The general formula is x=4y

Step-by-step explanation:

x varies directly as y

x∝y

Then, let k be constant of proportionality

x=ky

If x=12 and y=3

Then, 12=3k

Divide both side by 3

k=4

The general formula

x=ky

Then, since K=4

x=4y

ss7ja [257]3 years ago

6 0

Answer:

y = (1/4)x

Step-by-step explanation:

"Direct variation" here signifies y = kx, where k is the constant of proportionality.

Then y = kx. Here we are to find k using the info that x = 12 and y = 3:

3 = k(12), or

k = 3/12, or k = 1/4

Then y = (1/4)x

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jarptica [38.1K]

Answer:

x = 1.1

Step-by-step explanation:

x+4.6=5.7

-4.6 = -4.6

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3 years ago

Read 2 more answers

ANSWER THIS AND GET A BRAINIEST . thank youu - 10 points

crimeas [40]

Answer:

18; 1h30m; 15

Step-by-step explanation:

Part A:

James traveled 45km, you can tell because that is where he stops.

It took him from 2pm to 4:30pm.

You can find this info on the x axis.

That means 45km took him 2.5 hours.

45/2.5=18

James travels 18km per hour.

Part B:

The stop is indicated by the flat part in the graph. This is because when he stops, the distance he is away from home is not changing.

His stop is from 4:30pm to 5pm.

This means that his stop is 1 hour and 30 minutes.

Part C:

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It took him from 5pm to 8pm.

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45/3=15

James travels 15km per hour.

3 0

3 years ago

How do i evaluate it????

Kitty [74]

Answer:

1 for all evaluate questions

Step-by-step explanation:

just remember anything to the zero power is 1

4 0

3 years ago

Find the 6th term of the arithmetic sequence X – 9, -X – 11, -3.3 – 13, ...

MrMuchimi

Answer:

$-13x-23$

Step-by-step explanation:

Given sequence: $x-9, -x-11, -3x-13$

Therefore,

$a_1=x-9$
$a_2=-x-11$
$a_3=-3x-13$

General form of an arithmetic sequence: $a_n=a+(n-1)d$

(where a is the first term and d is the common difference)

To find the common difference, subtract a term from the next term:

$\begin{aligned}d & =a_2-a_1\\ & =(-x-11)-(x-9)\\ & = -x-11-x+9\\ & = -2x-2\end{aligned}$

Therefore,

$a_n & =(x-9)+(n-1)(-2x-2)$

To find the 6th term, input n = 6 into the equation:

$\begin{aligned}\implies a_6 & =(x-9)+(6-1)(-2x-2)\\ & = (x-9)+7(-2x-2)\\ & = x-9-14x-14\\ & = -13x-23\end{aligned}$

3 0

2 years ago

Plz help I’m dumd and I can’t answer it

kakasveta [241]

Answer:

Step-by-step explanation:

25% is 0.25 or 1/4

44 x 0.25 =11

6 0

3 years ago