Help please Which graph does not represent a function?

I want 5kg of rice.

nikdorinn [45]

The best possible choice for addition will be given by

a) Cost of 5 boxes of 1 kg rice = £7

b) Cheapest way to buy 5 kg rice is by buying 2 kg + 2 kg+ 1 kg and the

cost is £6.7

What is addition?

Bringing two or more numbers together to find a new total is called addition.

Here,

a) Cost of 1 kg rice = £1.4

Cost of 5 boxes of 1 kg rice = £1.4 * 5

= £7

b) Possible ways of buying 5kg rice

1) 1 kg + 1 kg + 1 kg + 1 kg + 1 kg

2) 1 kg + 1 kg + 1 kg + 2 kg

3) 1 kg + 1 kg + 1.5 kg + 1.5 kg

4) 2 kg + 2 kg + 1 kg

Now

cost of rice in 1) = £(1.40 + 1.40 + 1.40 + 1.40 + 1.40) = £7

cost of rice in 2) = £(1.40 + 1.40 + 1.40 + 2.65) = £6.85

cost of rice in 3) = £(1.40 + 1.40 + 2.05 + 2.05) = £6.9

cost of rice in 4) = £(2.65 + 2.65 + 1.40) = £6.7

Cheapest way to buy 5 kg rice is by buying 2 kg + 2 kg+ 1 kg and the cost is £6.7

To learn more about addition, refer to the link:

brainly.com/question/5982761

#SPJ9

Complete Question

A shop sells three different sized boxes of rice. Nice Rice 1kg £1.4, 1.5 kg

£2.05, 2kg 2.65

a) I want of rice. I could buy five boxes of size . How much would that cost? b) I could buy of rice in different ways. How much would it cost to buy of rice in the cheapest way possible?

4 0

1 year ago

(geometry) please look at attached image and help me with this question!

julsineya [31]

Answer:

m∠AEC = 139°

Step-by-step explanation:

To make the equations easier to write, let's say all measures are in degrees, and define ...

p = m∠AEB = 11x -12

q = m∠CED = m∠CEB = 4x +1

Then ...

p + 2q = 180

(11x -12) + 2(4x +1) = 180

19x -10 = 180 . . . . . . . . . . . . collect terms

19x = 190 . . . . . . . . add 10

x = 10 . . . . . . . . . . . divide by 19

p = 11x -12 = 110 -12 = 98

q = 40 +1 = 41

The angle of interest is ...

m∠AEC = p +q = 98 +41

m∠AEC = 139 . . . . degrees

8 0

3 years ago

1)The table below represents a linear function f(x) and the equation represents a function g(x):

irga5000 [103]

1)The table below represents a linear function f(x) and the equation represents a function g(x):

x y
-1 -11
0 -1
1 9

g(x) = 5x + 1

Part A: Write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x). (6 points)

slope of the data of the table:

slope = rise / run = Δy / Δx = [ 9 - ( - 1) ] / [1 - 0] = 10/1 = 10

Also Δy / Δx = [-1 - (-11) ] / [ 0 - (-1) ] = 10 / 1 = 10

the slope of the function given in the form f(x) = mx + b is m, so the slope of g(x) = 5x - 1 is 5.

Comparisson: the slope of the function g(x) = 5x - 1 is half the slope of the function f(x) represented by the table.

Part B: Which function has a greater y-intercept? Justify your answer.

The y-intercept is the value of y when x = 0, so it is - 1 for the function represented by the table.

The y-intercept of a function given in the form f(x) = mx + b is b, so the y-intercept of g(x) = 5x - 1 is - 1.

So, both functions have equal y-intercept.

2)The table below shows the values of y for each value of x:

x y
1 0
1 -1
2 1
2 -2

Part A: Does the table represent a relation that is a function? Justify your answer by using the values shown in the table. (4 points)

No, it is not a function, because the relation is ambiguous: the x-coordinate 1 may have two differente values, and the x-coordinate 2 may have two different. So you cannot determine the images of x = 1 and x = 2.

Part B: The function f(x) shown below represents the number of baskets Jess made at different distances, x, in meters, from the hoop:

f(x) = -x + 6

Calculate and interpret the meaning of f(4). (4 points)

f(4) = - 4 + 6 = 2

It means that Jess made 2 baskets at the distant of 4 meters.

Part C: Write an ordered pair to represent the input and output of the function in Part B when Jess is at a distance of p meters from the hoop. (2 points)

input, p output, f(p)

6 -6 + 6 = 0

So the ordered pair is (6,0)

6 0

3 years ago

Read 2 more answers

4) The quantities x and y are in proportion x 4 30 8 __b__ a) b) c) y 6 45 __a__ 15 Find the value of a and b. Find the constant

Ivan

Question:

The quantities x and y are in proportion

x y

4 6

30 45

8 b

a 15

(a) Find the values of a and b.

(b) Find the constant of variation. Is it direct variation or inverse variation?

Answer:

$a = 10$ and $b = 12$

Constant of variation is 1.5

Direct Variation

Step-by-step explanation:

Solving (a): The values of a and b

First, we determine the equation that relates x and y

From the table, we have:

$(x_1,y_1) = (4,6)$

$(x_2,y_2) = (30,45)$

The slope (m) is:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{45 - 6}{30 -4}$

$m = \frac{39}{26}$

$m = 1.5$

The equation is then calculated using:

$y - y_1 = m(x - x_1)$

This gives:

$y - 6 = 1.5(x - 4)$

$y - 6 = 1.5x - 6$

$y = 1.5x$

Solving for the value of b

From the table: x = 8, y = b

Substitute these values in $y = 1.5x$

$b = 1.5 * 8$

$b = 12$

Solving for the value of a

From the table: x = a, y = 15

Substitute these values in $y = 1.5x$

$15 = 1.5 * a$

Solve for a

$a = \frac{15}{1.5}$

$a = 10$

Solving (b): The constant of variation.

This has been solved in (a) above as:

$m = 1.5$

Direct or Inverse?

From the given table, we notice that y increases as x increases and y decreases as x decreases.

This shows direct variation

3 0

3 years ago

A number changed to 12.6 after it was rounded. To what place was the number rounded? Explain how you know.

Anton [14]

If 12.6 was rounded, that means that it was rounded to the tenths place.
You know this because the number has one decimal place, so that must be what it was rounded to.

4 0

4 years ago