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Orlov [11]
3 years ago
13

Define a variable, write an inequality, and solve: A number decreased by 7 is at least 15.

Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

x is greater than it equal to 22

Step-by-step explanation:

Have a nice day! xoxo Arael :)

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Maggie constructs a triangle with sides lengths 7 centimeters long and 10 centimeters long.
MakcuM [25]

7 centimeters is a possible length for the third side ⇒ B

Step-by-step explanation:

Let us revise the triangle Inequality Theorem

  • The sum of the lengths of any 2 sides of a triangle must be greater than the length of the third side
  • To prove that by easy way add the smallest two sides, if their sum greater than the third side,then the sides can form a triangle

Assume that the length of the third side is x cm

∵ The length of two sides are 7 cm and 10 cm

∵ The length of the third side is x cm

- Put the sum of x and 7 greater than 10 ( x and 7 are the smallest sides)

∴ x + 7 > 10

- Subtract 7 from both sides

∴ x > 3

- Put the sum of 7 and 10 greater than x (7 and 10 are the smallest sides)

∵ 7 + 10 > x

∴ 17 > x

∴ x < 17

- By using one inequality for x (combined the two inequalities in one)

∴ 3 < x < 17

That means the length of the third side is any number between 3 and 17

There is only one answer between 3 and 17

∵ 7 is between 3 and 17

∴ The length of the third side could be 7 cm

7 centimeters is a possible length for the third side

Learn more:

You can learn more about triangles in brainly.com/question/4599754

#LearnwithBrainly

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3 years ago
The earth is 146 000 000 kilometres from the sun, what is the number in standard form?
Tanya [424]
<span>1.46 X 10(8) (to the eighth) Km</span>
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Kelly needs to order lunch for 6 people at a business meeting.Her menu choices are chicken salad for a cost of $5 per person and
Reil [10]
I hope this is what you mean, sorry if it is not

Kelly can buy 4 things of chicken salad and 2 things of egg salad it fits in the budget of $28 dollars. Hope you have a good day!
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Solve for x 4 x- &gt;6x+8
finlep [7]

So you're suppose to isolate the variable by dividing each side by factors that don't contain the variable.

Which equals or at least.. Makes x  =  − 4

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I hope this helps, as always. I wish you the best of luck and have a nice day, friend..

5 0
3 years ago
Convert 72 miles per hour into feet per second: Show all work.​
koban [17]

Answer:

Step-by-step explanation:

72 mph = 105.6 ft per second

Thanks to google.com

6 0
3 years ago
Read 2 more answers
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