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svetoff [14.1K]

3 years ago

12

You started this year with $485 saved and continue to save $13 per month. Write an equation to model this situation (use m for m

onths and s for saving

2 answers:

jeka943 years ago

7 0

Answer: 485 + 13m = s

pogonyaev3 years ago

3 0

I believe the correct equation is

s(m)=13m+485

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Here are the prices for cans of juice that are the same brand and the same size at different stores. Which store offers the best

lubasha [3.4K]

The best deal is offered by the Store Z

<em><u>Solution:</u></em>

We have to find which store offers the best deal

This is found by calculating the unit rate of each store

Unit rate of each store means price per can .i.e price of 1 can

<h3><u>Store X: 4 cans for $2.48</u></h3>

Therefore, store X sells 4 cans for $ 2.48

Price of 1 can is found by dividing 2.48 by 4

$\text{Price of 1 can } = \frac{2.48}{4} = 0.62$

Thus unit rate of store X is $ 0.62 per can

<h3><u>Store Y: 5 cans for $3.00</u></h3>

Therefore, store Y sells 5 cans for $ 3.00

Price of 1 can is found by dividing 3.00 by 5

$\text{Price of 1 can } = \frac{3}{5} = 0.6$

Thus unit rate of store Y is $ 0.6 per can

<h3><u>Store Z: 59 cents per can</u></h3>

1 cents is equal to 0.01 dollar.

59 cents = 0.59 dollar

Thus unit rate of store Z is $ 0.59 per can

Comparing unit rate of store X, Y, Z

$0.62 > 0.6 > 0.59$

Thus, unit rate of store Z is lower than store Y and store X

Therefore, the best deal is offered by the Store Z

4 0

3 years ago

Write a rule for determining possible values of a variable in an inequality

jeka94

You have to isolate the variable to get it by itself

7 0

3 years ago

Read 2 more answers

What is the total of roses white and red roses if we have five red roses and 2 white roses please help me

Lilit [14]

Both the red and white roses would make up seven roses

5 0

3 years ago

Fifty people are surveyed at a state fair. Of the 50 people, 30 like funnel cake and 25 like fried oreos. Twenty people like bot

VLD [36.1K]

<span>How many people like either funnel cake or fried Oreos?
55
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7 0

3 years ago

N is a positive integer

Murrr4er [49]

Part (1)

n is some positive integer. Let's say for now that n is even. So n = 2k, for some integer k

This means n-1 = 2k-1 is odd since subtracting 1 from an even number leads to an odd number.

Now multiply n with n-1 to get

n(n-1) = 2k(2k-1) = 2m

where m = k(2k-1) is an integer

The result 2m is even showing that n(n-1) is even

------------

Let's say that n is odd this time. That means n = 2k+1 for some integer k

And also n-1 = 2k+1-1 = 2k showing n-1 is even

Now multiply n and n-1

n(n-1) = (2k+1)(2k) = 2k(2k+1) = 2m

where m = k(2k+1) is an integer

We've shown that n(n-1) is even here as well.

------------

So overall, n(n-1) is even regardless if n is even or if n is odd.

Either n or n-1 will be even. If you multiply an even number with any number, the result will be even.

=======================================================

Part (2)

n is some positive integer

2n is always even since 2 is a factor of 2n

2n+1 is always odd because we're adding 1 to an even number. The sequence of integers goes even,odd,even,odd, etc and it does this forever.

-----------

Another way to see how 2n+1 is odd is to divide 2n+1 over 2 and you'll find that we get (2n+1)/2 = 2n/2+1/2 = n+0.5

The 0.5 at the end is not an integer, so there's no way that (2n+1)/2 is an integer; therefore 2n+1 is odd.

6 0

3 years ago