2 years ago

Please show your work for this

Mathematics

1 answer:

rewona [7]2 years ago

3 0

Answer:

uhhhhhh ill thibk abouyt it

Step-by-step explanation:

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Solve the inequality. 3m ≤ –9 A.m ≥ –3 B.m ≤ –3 C.m ≥ 6 D.m ≤ –6

marin [14]

$3m \leq -9\ /:3 \ \ \ \Rightarrow\ \ \ m \leq -3\ \ \ \Rightarrow\ \ \ Ans.\ B$

6 0

3 years ago

John sells hamburgers ($3) and cheeseburgers ($3.50). One afternoon he sells a total of 24 burger for $79. How many of these wer

ankoles [38]

John sold 10 hamburgers and 14 cheeseburgers.

Step-by-step explanation:

Given,

Cost of one hamburger = $3

Cost of one cheeseburger = $3.50

Total burgers sold = 24

Total revenue earned = $79

Let,

Number of hamburgers sold = x

Number of cheeseburgers sold = y

According to given statement;

x+y=24 Eqn 1

3x+3.50y=79 Eqn 2

Multiplying Eqn 1 by 3

$3(x+y=24)\\3x+3y=72\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(3x+3.50y)-(3x+3y)=79-72\\3x+3.50y-3x-3y=7\\0.50y=7$

Dividing both sides by 0.50

$\frac{0.50y}{0.50}=\frac{7}{0.50}\\y=14$

Putting y=14 in Eqn 1

$x+14=24\\x=24-14\\x=10$

John sold 10 hamburgers and 14 cheeseburgers.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

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2 years ago

In a math class of 40 students, there are 21 female students. Which of the following does NOT represent a ratio of the number of

babymother [125]

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Y_Kistochka [10]

Answer:

Step-by-step explanation:

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Plz help

n200080 [17]

I think D (sorry if I’m wrong)

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3 years ago