MATHEMATICS MIDDLE SCHOOL

Which graph represents the function f (x) = 5 - 5x^2
Which graph represents the function f (x) = 5 - - 1

Answers

Answer 1
Answer:

The graph for the function f(x) = 5 - 5x² is shown in the figure below.

How to draw a graph for the function?

  • Consider certain values of x to get x-coordinates
  • Substitute those values in the function to get y-coordinates
  • Coordinate those x and y values as (x, y)
  • Plot those points in the graph
  • Connect those points, it forms a curve or line or parabola

Calculation:

The given function is f(x) = 5 - 5x²

Consider x = {-1, 0, 1}

When x = -1

f(-1) = 5 - 5(-1)²

     = 5 - 5

     = 0

∴ (-1, 0)

When x = 0

f(0) = 5 - 5(0)²

     = 5 -0

     = 5

∴ (0, 5)

When x = 1

f(1) = 5 - 5(1)²

    = 5 - 5

    = 0

∴ (1, 0)

So, the coordinatepoints are (-1, 0), (0, 5), and (1, 0)

Plotting these points in the graph.

Connecting those points gives a curve shown in the figure below.

Learn more about the graph of a function here:

brainly.com/question/4025726

#SPJ2
Answer 2
Answer: The bottom one is correct

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A 3-pound bag of apples costs $5.25. What is the unit price of a pound of apples? per pound At this rate, how many pounds of apples can be purchased for $17.50? pounds of apples Let x represent the number of pounds of apples and y the total cost of the apples. What is the equation that represents the direct variation between the total cost of the apples and the number of pounds of apples?

Answers

Answer:

Cost of 3 pounds of apples = $5.25

Cost of unit pounds of apples = (5.25)/(3)= 1.75 dollars.

So, price is $1.75 per pound.

At this rate, how many pounds of apples can be purchased for $17.50

Amount of apples = (17.50)/(1.75)=10 pounds

Let x represent the number of pounds of apples and y the total cost of the apples.

So, the equation that represents the direct variation between the total cost of the apples and the number of pounds of apples

y=1.75x
$1.75 per pound of apples, 10 apples can be purchased for $17.50 because you divide 17.50 by 1.75 since that is your unit rate per pound. 

Can the sum of two mixed numbers be equal to 2, explain why or why not

Answers

no because a mixed number is a whole number with a fraction and the smallest whole number is one so 1 and a fraction pulse and a fraction will equal more than 2
Do 20/10 and 22/11 because they will have 2

PICTURE INCLUDED HELLLPPP ASAP

Answers

12/7 = 20/x

12x = 140

x = 140/12 = 35/3 = 11.67

so radius of the large cone = 11.67 ft

Volume = 1/3 πr^2h

= 1/3(3.14)(11.67)^2(20)

= 2850.88

Answer is B. 2850.70 ft^3

Witch is greater -5/6 or -5/8

Answers

(-5)/(8) = -0.625 , (-5)/(6) = -0.83333333333

Which one is greater? Remember, The further it is from 0, the smaller it is.

Hope that helped (:

-TotoandFidoLOVE

Use the graph to write a linear function that relates y to x

Answers

The equation of a line can be predicted easily if two points are given. Thus, the equation of the required line is \bold{y=4}.

We need to determine the equation of the line with the help of the given graph.

Now, take two points from the graph. The points are ( 1, 4 ) and ( 2, 4 ).

The if a line passed through the two points say (x_1,y_1)\;\rm{and}\;(x_2,y_2), then the equation of the line can be formulated as:

(y-y_1)=(y_2-y_1)/(x_2-x_1)(x-x_1)

Therefore, apply the formula and solve it further.

\begin{aligned} (y-4)&=(4-4)/(3-2)(x-1)\ny-4&=0\ny&=4 \end{aligned}

Thus, the equation of the line is \bold{y=4}

To know more about the equation of the line, please refer to the link:

brainly.com/question/20632687

Answer:

y = 3

Step-by-step explanation:

This is a constant function

y = 3

when the whole is the same why does it take 4 copies of one tenth to equal 2 copies of one fifth draw a model to support your answer

Answers

well 4 copies of one tenth will equal 4 tenths. so when u simplify 4 over ten (4/10 )and divide the top and bottom by the common factor which is 2 then you will get 2 fifths  because 4 divided by 2 is 2 and 10 divided by 2 is 5.
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