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mars1129 [50]
3 years ago
15

Jose weighs 180 pounds and plans on gaining 2 pounds per week. Marty weighs 249 pounds and plans on losing 1 pound per week. In

how many weeks will they weigh the same?
Mathematics
1 answer:
Karolina [17]3 years ago
5 0

Answer: it will take 23 weeks for both of them to weigh the same.

Step-by-step explanation:

Let x represent the number of weeks that it will take both of them to weigh the same.

Let y represent the weight of Jose in x weeks.

Let z represent the weight of Marty in x weeks.

Jose weighs 180 pounds and plans on gaining 2 pounds per week. This means that

y = 180 + 2x - - - - - - - - 1

Marty weighs 249 pounds and plans on losing 1 pound per week. This means that

z = 249 - x - - - - - - - - 2

To determine the number of weeks that it will take both of them to weigh the same, we will equate both equations. It becomes

180 + 2x = 249 - x

2x + x = 249 - 180

3x = 69

x = 69/3 = 23

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9 * 10^7 is how many times as large as 3 * 10^-2
WARRIOR [948]

Answer:

3,000,000 times larger

Step-by-step explanation:

9*10^7

= 9 multiplied by 10,000,000

=90,000,000

3*10^-2

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= 0.03

Therefore by dividing 90,000,000 by 0.03

The answer is 3,000,000

That is 3 million

7 0
3 years ago
Write the expression in WORDS!<br><br> 5x + 3
Svet_ta [14]
The expression 5x+3 would be three more than five times a number! More than in this case would be addition - so if you get the same problem with subtraction you just change more to less!
Basically what it's tell you is that if x stood for 2 in this case 5*2 = 10 since it's 3 MORE than 5 times a number (x is in place of a number), you're adding 3 to 10 and that gives you 13!
I hope I simplified it a little more and you understand!
Good luck, rockstar! c: I hope this helped!
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3 years ago
1) Give 5 examples of a difference of two perfect squares
Katyanochek1 [597]

ᴀɴsᴡᴇʀ:

<u>1.Example, x²-25 can be factored as (x+5)(x-5).</u>

<u> </u>

<u>2.This method is based on the pattern (a+b)(a-b)=a²-b², which can be verified by expanding the parentheses in (a+b)(a-b).</u>

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<u>3.When an expression can be viewed as the difference of two perfect squares, i.e. a²-b², then we can factor it as (a+b)(a-b). For example, x²-25 can be factored as (x+5)(x-5).</u>

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs!

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3 years ago
The owner of a new pet store wishes to display tropical fish in display tanks. The above table shows the species that cannot liv
Pepsi [2]

Answer:

The minimum number of different tanks needed to safely house all the fish is:

  • <u>3 tanks</u>.

Step-by-step explanation:

To identify the minimum number of different tanks, we're gonna concentrate in a fish species, in this case can be the A: as you see in the table, the A species can live with all the fish excepting the F and G, by their side, the F and G can't live together , by this reason, this three species must live in a different tank, in the next form:

  • Tank 1: <em>A</em>
  • Tank 2: <em>F</em>
  • Tank 3: <em>G</em>

Now the B species, it can live with A, F and G, but for this example we can put in the tank 1 (the tank of the A species). The C especies can live with A, F and G, but how we have A and B together, we're gonna put the C especies in the tank 3 (the tank of the G especies). The D species can live with A and G, we're gonna put in the tank 1 because can live with B species too. The E species can live with A and F, we're gonna put in the tank 2 (the tank of the F species) because the E species can't live with D that is in the in the tank 1. Al last, the H species just can live with A, E, F, and H species, by this reason, the only tank that can be put is the tank 2. In this form, the order is the next:

  • Tank 1: <em>A, B, D</em>.
  • Tank 2: <em>F, E, H</em>.
  • Tank 3: <em>G, C</em>.

And t<u>he owner of the pet store must buy three different tanks to display these tropical fish</u>.

5 0
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On a 16 scale drawing of a bike, one part is 3 inches long. How long will the actual bike part be?
Oksanka [162]
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3 years ago
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