Mathematics College

4. A varies directly as r. If A = 12, when r = 2, calculate:
a) the value of A, when r=5
​

Answers

Answer 1

Answer:

The value of A ,when r=5 then A = 14

Answer 2
A varies directly to r means that A= kr
Substitute the given value : 12 = 2(k) —> k=6
Eqn : A=6r
When r=5,A= 6(5)= 30 thus A= 30

Related Questions

help please and thank youu

Answers

Answer:

c

Step-by-step explanation:

number number number number

jack donates $X per month to charity. Ta the end if 10 months, he had 1250 donated in total. How much did he donate each month

Answers

Answer:

He donated $125 per month.

Step-by-step explanation:

$1250 divided by 10 months to figure out how much he payed each month.

2.945 to the nearest hundredth​

Answers

Answer:

2.95

Step-by-step explanation:

2.945 would round up to 2.95 because when a number is followed by 5 it rounds up.

Shaun's earnings at $12 per hour were less than $150. Write an inequality

Answers

Answer:

I think that the answer is 12x<150

Answer:

12x<150

Step-by-step explanation:

Equation in point slope form (5,-12);m=-2/3

Answers

Answer:

y + 12 = -2/3(x - 5)

Is figure ABCD a translation of Figure ABCD

A. Yes it is translated 2 units left and 2 units up

B. Yes it is translated 1 unit left and 3 units up

C. Yes it is translated 3 units left and 1 unit up

D. No the two figures are oriented diferently

Answers

the answer is a .. hope this helps .

Please help me.
And explain how you got your answer please.

Answers

Percent error is found by (actual value-experimental value)/(actual value) and then multiplying by 100% to get the legend tags. So (206-195)/206=.05339=5.3%

so you would earn 1 point.

5) Solve this system by graphing.
-2x - 4y = -8
y = x-10

Answers

The solution is (8,-2)
Plot the equations on a graph, at the point of intersection is the solution for both equations.

how do you solve y+1=2x

Answers

y =2x-1

Step-by-step explanation:

f(x) = x^2 -2x -3 /x-3 identify the discontinuity

Answers

Answer:

Step-by-step explanation:

Again, parentheses would help with clarity. f(x) = (x^2-2x-3)/(x-3)

The denominator is x-3. Division by 0 is undefined, so x ≠ 3.

The length of a rectangular frame is 15 inches, and the width of
the frame is 9 inches. What is the length of the diagonal of this
frame in inches?
Please help

Answers

Answer:

Step-by-step explanation:

in which graph is y a linear function of x will mark brainiest ​

Answers

Answer:

I think it is d

Step-by-step explanation:

hope this helps

What is the y-intercept of the line given by the equation y = 8x + 75?
A. (0,75)
B. (0,-8)
C. (0, -75)
D. (0,8)​

Answers

Answer:

The answer is A.

Step-by-step explanation:

In a linear equation, y = mx + b where b represent y-intercept.

y-intercept is the point where it touches y-axis, so the value of x is 0.

The y-intercept of the given equation is (0, 75). Therefore, option A is the correct answer.

What is a y-intercept?

In Maths, an intercept is a point on the y-axis, through which the slope of the line passes. It is the y-coordinate of a point where a straight line or a curve intersects the y-axis. This is represented when we write the equation for a line, y = mx+c, where m is slope and c is the y-intercept.

The given equation of a line is y=8x+75.

To find the y-intercept, set x = 0 and solve for y.

Here, substitute x=0 in y=8x+75, we get

y=8(0)+75

y=75

So, the y-intercept is (0, 75)

Therefore, option A is the correct answer.

To learn more about the y-intercept visit:

brainly.com/question/14180189.

#SPJ7

Which quadratic rule represents the data in the table?
y= -2x2 + 5
y= -x2 + 5
y = x2 - 5
y = x2 + 5

Answers

Answer:

x^2 - 5

Step-by-step explanation:

x = -1, y = 1 - 5 = -4.

x = 0, y = 0-5 = -5.

x = 1, y = 1 - 5 = -4.

Which represents the inverse of the function f(x) = 4x?
O h(x) = X + 4
• h(x) =X- 4
O h(x) = =x
O h(x) = ÷x


PLEASEE HELP

Answers

Answer:

f^(-1) = x/4

Step-by-step explanation:

1.  Starting with f(x) = 4x, replace 'f(x)' with y:  y = 4x

2.  Interchange x and y:  x = 4y

3.  Solve for y:  y = x/4

4.  Replace this y with 'f^(-1) = ":    f^(-1) = x/4

3. Which number is a natural number?
A-2.5
B 5-151
C-13+51
D|-81-2

Answers

Answer:

C

Step-by-step explanation:

A natural number is a number that you would use to count kids in a class for example. Like, 1,2,3,4 and so on. 2.5 is not a natural number since there cant be 2.5 of a student. 5-151 is a negative number and there cant be negative students. -13+51=38. 38 is a natural number. Now, in D it looks like there mightve been a absolute value sign but im not sure. If D has absolute value signs then D works too. Hope I could help.

Find the value of X. Round to the nearest tenth

Answers

9514 1404 393

Answer:

  88.2

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relevant relation ...

  Tan = Opposite/Adjacent

  tan(10°) = x/500

  x = 500·tan(10°)

  x  ≈ 88.2 . . . . units

_____

If you move the "500" dimension to the top of the figure, you see it is adjacent to the given angle, and the value x is opposite.

How would you graph
y = 2x - 1? , ILL MARK BRAINLIST

Answers

It’s the pink one
The one on the right

Answer:

Starts at negative 1 Y-axis, and then go yp 2 and 1 to the right

Mr. Norris is paid a 3% commission on each boat he sells. What is his commission on a boat that he sells for $145,000?

Answers

Answer:

3% of 145000

Step-by-step explanation:

calculator

Determine if the sequence is arithmetic or geometric.

3, 6, 9, 12, ....... when x = 0, 1, 2, 3, .....

Arithmetic
OR
Geometric

Answers

Answer:

arithmetic

Step-by-step explanation:

Find Principal when Time = 5 years, Interest - $ 500; Rate = 5%

Answers

Answer:

P = $2,000

Step-by-step explanation:

Interest = Principal x Rate x Time

500 = P(.05)(5)

500 = .25P

P = 500/.25

P = 2000

Mrs. Baker found 25 shells on the beach. She brought 2/5 of the shells to her
classroom. The rest of the shells she set on a bookshelf at her house. How many
shells did she bring to schoof? How many shells are at her house? (Show your work
on another sheet of paper if necessary.)

Answers

Answer:

A. 10 B. 15

Step-by-step explanation:

A. 25/1 * 2/5= 50/5

reduced it is 10

B. 25-10=15

Answer:

she brought 10 shells to her classroom and 15 shells to her house. Hope that helps!

If the Mustangs, the Braves, the Bulldogs, the Huskies, and the Vikings are playing in the same sports league,
in how many different orders can they finish their season?

Answers

Answer:

.

Step-by-step explanation:

What is the equation of a line, in general form, that passes through point (1,-2) and has a siope of 1/3?

Answers

9514 1404 393

Answer:

  x -3y -7 = 0

Step-by-step explanation:

The general form of the equation for a line is ...

  ax +by +c = 0

where a, b, c are mutually prime and the leading coefficient is greater than zero.

__

The general form equation for a line with slope m = rise/run through point (h, k) can be found by simplifying ...

  rise(x -h) -run(y -k) = 0 . . . . where run has the sign of the slope

For the given point and slope, we have ...

  1(x -1) -3(y -(-2)) = 0

  x -3y -7 = 0

what is 1 + 3s > 7 sadhfashdfajdfadfa

Answers

Answer:

4??????????????

Step-by-step explanation:

&÷&$^#£#*$,$

Given the function g(x) = 4x - 5, compare and contrast g(2) and g(-4). Choose the statement that is true
concerning these two values.
O a
The value of g(2) is larger than the value of g(-4).
Oь
Ос
The value of g(2) is smaller than the value of g(-4).
The value of g(2) is the same as the value of g(-4).
The values of g(2) and g(-4) cannot be compared.
Od

Answers

Answer:

The value of g(2) is larger than the value of g(-4)

Step-by-step explanation:

2 is a larger number than -4, so automatically, the value of g(2) would be larger.

The graphs show the amounts in two different bank accounts over several months.



Explain whether Account A shows a proportional relationship between months and the amount in the account.

Explain whether Account B shows a proportional relationship between months and the amount in the account.

Analyze the graph that shows a proportional relationship. Explain the meaning of the points (x,y) and (1,r) where r is the unit rate.

Answers

Answer:

where are the graphs?

Step-by-step explanation:

During a film festival, the first film
ticket is priced at $16, and each
additional ticket is $11. If Rico spends
$71, then how many film tickets did
he purchase?

Answers

Answer:

3

Step-by-step explanation:

deccweljvrl;ej e

Review: Jen sells flowers. She charges $2 per flower plug a $3 flat delivery fee. How many flowers did she deliver if she made $21?

Answers

Answer:

she delivers 9 flower plugs.

Step-by-step explanation:

in a standard equation the equation would be 21 = 2x + 3 and if you isolate the x you would have to first subtract the 3 from both sides and that would leave you with 18 = 2x and then you have to divide both sides by 2 and get 9=x

$924 at 10.4% for 30 months

Answers

$934.5071401
or $934.51 to the nearest cent
(i'm assuming this is a compound interest q - sorry if it isn't!)
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