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3 years ago

I need help with this question.

Mathematics

1 answer:

Papessa [141]3 years ago

5 0

Answer:

It's A, c =2.5d

Step-by-step explanation:

When it comes to problems like this, I usually look through the answers and try to plug in the numbers until I get the right equation that fits with the graph.

2.5(5) = 12.5

2.5(10)= 25

2.5(15)= 37.5

2.5(20) = 50

2.5(25) = 62.5

If you compare this to the graph, you'll notice the solutions are the same as the Total Cost (c). That's because c= 2.5d is the right equation for this graph. (Sorry if my explanation is confusing)

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How can you recognize whether a real-world problem should be represented by an equation or inequality?

VladimirAG [237]

An equation:
It is used to express exact values.
Therefore, we will use an equation when when know that the quantity given is strictly equal to a given value.
Examples:
1- Price of a kilo of apples is $2
This is translated as ........> cost of 1 kilo = $2
2- The length of a ruler is 30 cm
This is translated as ......> length = 30 cm

An inequality:
It is used to show relation or compare between a quantity and a value. Therefore, we use it when we find keywords as "at least, at most, greater than, less than, ..... etc"
Example:
1- The distance between two cities is at least 20 miles.
This means that the distance can be 20 miles or more
This is translated as:
distance ≥ 20 miles

5 0

4 years ago

The weather was a youth soccer field must be at least 45 m but it cannot exceed 60 m right to inequalities that describe the wid

ss7ja [257]

Answer:

The width of the two soccer field must be given by $45\leq w\leq 60$ .

Assuming two Integers that are solutions of both inequalities are 45 and 60.

Step-by-step explanation:

Let the width of the youth soccer field be 'w'.

Now Given:

the width of the youth soccer field must be at least 45 m.

So we can say that;

$w\geq 45 \ m$

Also Given:

the width of the youth soccer field must not exceed 60 m.

So we can say that;

$x\leq 60$

Hence the width of the two soccer field must be given by $45\leq w\leq 60$ .

So we can say that;

Any Integer lying between integers 45 and 60 can be considered as the width of the youth soccer field.

So let us Assume two Integers that are solutions of both inequalities are 45 and 60.

7 0

4 years ago

If 4 friends have 8 apples how many will each friend get

Natalka [10]

2 because 8 divided by 4 is 2.

6 0

3 years ago

Read 2 more answers

Point T is on line segment

Fofino [41]

Answer:

Numerical length of TU = 6

Step-by-step explanation:

A/q,

SU = ST+TU

5x = 4x-3 + 2x

5x = 4x+2x-3

5x = 6x -3

5x-6x = -3

-x = -3

x = 3

Verify:- Putting x = 3 in 5x =4x-3+2x

5(3) = 4(3)-3+2(3)

15 = 12-3+6

15= 9+6

15= 15

LHS =RHS Hence correct

4 0

3 years ago

May I ask how to solve this?

damaskus [11]

QUESTION:

Let a,b,c be positive real number's such that

a² + b² + c² + ( a + b + c + )² =

2. 2022²Find the proof the least positive integer <em>m</em><em> </em>for which

$\frac{1}{a + b {}^{2} } | + \frac{1}{b + c {}^{2} } + \frac{1}{c + a {}^{2} } \geqslant \frac{1}{m {}^{2} }$

<h2>ANSWER</h2>

in the picture
sorry

Step-by-step explanation:

HOPE ITS HELP

THANK YOU

5 0

3 years ago