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2 years ago

Evan said that the difference between two negative numbers must be negative. Was he right?

Mathematics

1 answer:

lesya692 [45]2 years ago

8 0

No he was not right because if you had -7 and -5 the difference is 7 + 5 which equals 12.

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Dan's grandmother gave him $30 for his birthday. He decides to put $20 in a box for saving. Every week his parents give him $5 f

kozerog [31]

Answer:

$y=4\cdot{x}+20$

Step-by-step explanation:

Let the regresssion line be linear because of a constant amount of money coming in. Let y be the total amount of money in the box and x the weeks of adding to the box:

$y=m\cdot{x}+c$

We know that he puts $20 in the box from his birthday and $4 every week for x weeks. Therefore the total amount of money will be:

$y=4\cdot{x}+20$

7 0

3 years ago

QUICK Please !!

Nataly [62]

Its b since the number has a decimal which makes it undetermined

8 0

3 years ago

An isosceles triangle has a perimeter of 36 inches. Its base is 2 1 /2 times longer than each of its legs. What are the lengths

tensa zangetsu [6.8K]

Answer:

8 in, 8 in and 20 in

Step-by-step explanation:

Let the equal sides of the isosceles triangle be x, then

The base = 2.5x

Sum the 3 sides and equate to the perimeter of 36

x + x + 2.5x = 36

4.5x = 36 ( divide both sides by 4.5 )

x = 8

Thus the 2 equal legs = 8 in

base = 2.5x = 2.5 × 8 = 20 in

7 0

3 years ago

Evaluate the expression

alexgriva [62]

$\frac{40-4}{9+3} = \frac{36}{12} = 3$

3 0

3 years ago

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( show your work ) Find the total cost of 6 puppies if each pull-ups coast $250

yKpoI14uk [10]

Answer: $1500

Step-by-step explanation:

Given information

Number of puppies = 6

Cost of each puppy = $250

Given expression deducted from the question

Total cost = number of puppies × cost of each

Substitute values into the expression

Total cost = 6 × 250

Simplify by multiplication

Total cost = $\boxed{1500}$

Hope this helps!! :)

Please let me know if you have any questions

3 0

2 years ago

Read 2 more answers