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3 years ago

Select the correct answer.

Mathematics

1 answer:

True [87]3 years ago

8 0

Answer:

not paper money

Step-by-step explanation:

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A fitness center has two membership plans. One has a low dollar sign up fee of 15 dollars and cost 38 dollars per month to join.

victus00 [196]

Let x be the number of months.
The first plan is 15 dollars sign up fee and 38 dollars per month. So the equation is 38x + 15.
The second plan is 78 dollars as sign up fee and 31 dollars per month. So the equation is 31x + 78.

We need find when x has the same value in both equations, so we do their equality:
38x + 15 = 31x + 78
Let's subtract 15 from both sides
38x + 15 = 31x + 78
38x + 15 - 15 = 31x + 78 - 15
38x = 31x + 63

Now let's subtract 31x from both sides to have the variables on a side and the numbers on side:

38x = 31x + 63
38x - 31x = 31x - 31x + 63
7x = 63

Divide both sides by 7 to have the variable x on a side and its value on the other:
(7x)/7 = 63/7
x = 9

So at month 9, the 2 plans will cost the same.

Let's check our answers, and let y be the cost:
y = 38x + 15 = 38*9 + 15 = 357
y = 31x + 78 = 31*9 + 78 = 357
Our answer has been approved.

Hope this helps! :D

8 0

3 years ago

Abe, Bob, Carl, Dan and Earl are going to stand in line for a photo. What is the probability that the boys will stand in alphabe

Levart [38]

Answer:

0.0083 = 0.83% probability that the boys will stand in alphabetical order from left to right in the picture

Step-by-step explanation:

Probability:

A probability is given by the number of desired outcomes divided by the number of total outcomes.

Arrangments of x elements:

The total number of arrangments of x elements is given by:

$A_{x} = x!$

Desired outcomes:

Standing in alphabetical order, so only 1 possible outcome, which means that $D = 1$

Total outcomes:

Arrangments of 5 people, so

$T = A_{5} = 5! = 120$

Probability:

$p = \frac{D}{T} = \frac{1}{120} = 0.0083$

0.0083 = 0.83% probability that the boys will stand in alphabetical order from left to right in the picture

4 0

3 years ago

Match each line with its slope

qaws [65]

To find the slope you need to find the "rise" and the "run".The rise would be 4 and the run would be 1.Then you need to put the rise over run so your answer should look like this 4/1.

8 0

4 years ago

The product of 4 and a number b is 3/5 solve for b

Kay [80]

The easiest way to solve this is to write the words mathematically. You're told that the product of 4 and a number, b = 3/5.

That means:
4b (product of 4 and b) = $\frac{3}{5}$

To solve for b, you want to divide both sides by 4 to get the b by itself on the left of the equation:
$4b = \frac{3}{5}\\
 \frac{4b}{4} = \frac{\frac{3}{5}}{4}\\
b = \frac{3}{20}$

----

Answer: b = 3/20

8 0

4 years ago

2) James paid x dollars plus 3% sales tax for a pen. Write an algebraic Expression for the amount of

n200080 [17]

Answer:

What’s the answer?!? Ok

Step-by-step explanation:

3 0

3 years ago