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mr Goodwill [35]
3 years ago
7

What are the solutions to the equation?

Mathematics
1 answer:
olasank [31]3 years ago
5 0

Answer:

A. x=4 and x= -10

Step-by-step explanation:

x^2 +6× = 40

x^2 +6x -40

(x-4)(x+10)

x-4 = 0

x+10 = 0

x= 4

x=-10

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Step-by-step explanation:

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Plese help i need the answer
Sladkaya [172]

Using linear function concepts, it is found that:

a) The initial value is of 3 and the rate of change is of 20.

b) The rate of change means that for <u>each hour, the cost increases by 3 Dhs</u>, while the initial value means that <u>a flat fee of 20 Dhs is paid</u>.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and also can be considered as the initial value.

In this problem, the function that gives the charge C for renting a bicycle for h hours is:

C(h) = 3h + 20

Item a:

Comparing to the standard function, we have that:

  • The initial value is of 3 and the rate of change is of 20.

Item b:

The rate of change means that for <u>each hour, the cost increases by 3 Dhs</u>, while the initial value means that <u>a flat fee of 20 Dhs is paid</u>.

You can learn more about linear function concepts at brainly.com/question/24808124

6 0
3 years ago
Twenty men can cut thirty trees in four hours. If four men leave the job, how many
Mice21 [21]

Answer:

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Step-by-step explanation:

done

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3 years ago
4m^2-5m when m= -4 solve
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Answer:

84

Step-by-step explanation:

4 (-4)^2 - 5(-4)

4 × 16 - 5 × -4

64 + 20

84

8 0
2 years ago
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