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2 years ago

Another math question :)

Mathematics

2 answers:

mart [117]2 years ago

5 0

Lets x = Mary's age

Emily is there years older than twice her sister Mary's age = 2x + 3

Sum of both is less than 30:

x + 2x + 3 < 30

Solve for x

3x + 3 < 30

3x < 27

x < 9

Mary's age = 9

Inequality represents Mary's possible age:

0 < x < 9

Answer is the second one

0 < x < 9

Read more on Brainly.com - brainly.com/question/10770846#readmore

Travka [436]2 years ago

4 0

Lets x = Mary's age

Emily is there years older than twice her sister Mary's age = 2x + 3

Sum of both is less than 30:

x + 2x + 3 < 30

Solve for x

3x + 3 < 30

3x < 27

x < 9

Mary's age = 9

Inequality represents Mary's possible age:

0 < x < 9

Answer is the second one

0 < x < 9

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Answer:

y = -7x

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Take two points from table: (-4, 28), (-3, 21)

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$\sf slope: \dfrac{y_2 - y_1}{x_2- x_1} \ \ where \ (x_1 , \ y_1), ( x_2 , \ y_2) \ are \ points$

$\rightarrow \sf slope\ (m): \dfrac{21-28}{-3-(-4)} = -7$

Now find equation:

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2 years ago

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Answer:

3960

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Step-by-step explanation:

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2 years ago

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Serjik [45]

Answer:

x> 3/20

Step-by-step explanation:

Let's solve your inequality step-by-step.

1 /5 + 1 /3 x> 1 /2 − 1 /4

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1 /3 x+ 1 /5 > 1 /4

Step 2: Subtract 1/5 from both sides.

1 /3 x+ 1/ 5 − 1 /5 > 1 /4 − 1 /5 1 /3 x> 1 /20

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See the attached figure.

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