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3 years ago

Using the following graph answer A-C

Mathematics

1 answer:

krek1111 [17]3 years ago

8 0

Answer:

The answer to your question is below

Step-by-step explanation:

a) Find to points of the line and find the equation of the line.

A ( 0, -4) B (2, 0)

slope = m = $\frac{0 + 4}{2 - 0}$

$m = \frac{4}{2}$

m = 2

Line equation

(y - y1) = m (x - x1)

(y - 0) = 2(x - 2)

y = 2x - 4

Write the line as an inequality

y ≥ 2x - 4

b) Yes, (2,0) is a solution of the inequality

y ≥ 2x - 4

0 ≥ 2(2) -4

0 ≥ 4 - 4

0 ≥ 0 This is true

c) No, (4, -2) is not a solution.

y ≥ 2x - 4

-2 ≥ 2(4) - 4

-2 ≥ 8 - 4

-2 ≥ 4 This is false

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Với điều kiện nào của m thì phương trình ( 3m^2 - 4) x -1=m-x có nghiệm duy nhất?

Shtirlitz [24]

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3 years ago

Draw a model to represent the following problem 42 divide 7 Answer

hodyreva [135]

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3 years ago

I cant find the answer.

Pepsi [2]

Answer:

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3 years ago

Read 2 more answers

In a survey of employees at a fast food restaurant, it was determined that 15 cooked food, 12 washed dishes, 21 operated the

andre [41]

This question is incomplete

Complete Question

In a survey of employees at a fast food restaurant, it was determined that 15 cooked food, 12 washed dishes, 21 operated the cash register, 7 cooked food and washed dishes, 6 cooked food and operated the cash register, 6washed dishes and operated the cash register, 4 did all three jobs, and 7 did none of these jobs

(a) Only cooked food?

(b) Only operate the cash register?

Answer:

(a) Only cooked food?

(b) Only operate the cash register?

Step-by-step explanation:

From the above question, we have the following information:

15 cooked food

12 washed dishes

21 operated the cash register

7 cooked food and washed dishes

6 cooked food and operated the cash register

6washed dishes and operated the cash register

4 did all three jobs

7 did none of these jobs

(a) Only cooked food?

This would be calculated as

Number of people that cooked food + Number of people that did all three jobs - Number of people that cooked food and washed dishes - Number of people that cooked food and operated the cash

= 15 + 4 - 7 - 6

= 19 - 13

= 6

Therefore ,only 6 people cooked food

(b) Only operate the cash register?

This would be calculated as

Number of people that operated cash register + Number of people that did all three jobs - Number of people that cooked food and operated the cash register - Number of people that washed dishes and operated the cash register

= 21 + 4 - 6 - 6

= 25 - 12

= 13

Therefore, only 13 people operated cash register.

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4 years ago