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Juliette [100K]
3 years ago
12

Marco wants to buy a new smartphone that costs $495, with some additional accessories. He has already saved $75. Write and solve

an inequality to find the least amount of money, m, that Marco still needs to save before he can buy the smartphone and accessories. Enter your answer in the box. Marco needs to save at least $.
Mathematics
1 answer:
antoniya [11.8K]3 years ago
4 0

Marco needs to save a minimum of $420 more to buy a smartphone.

<u>Explanation:</u>

Cost of a smartphone = $495

Savings = $75

Least amount of money, m that needs to be saved = ?

Additional savings, m = Total - initial savings

                              m = $495 - $75

                              m = $420

The inequality equation would be 75 + m ≥ 495

Therefore, Marco needs to save a minimum of $420 more to buy a smartphone.

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6.4934 rounded to 6.493
iris [78.8K]

Answer:

To round you take the last diget and round it either up or down based on the number

if the number is 0-5 you round down

if the number is 6-9 you round up

so in this case you would round down to 6.4.930

Step-by-step explanation:

4 0
3 years ago
Given that xy=3/2 and both x and y are nonnegative real numbers, find the minimum value of 10x (3y/5)
Stells [14]

The munimum value is, at x = 3/10, y = 5 and 10x+3y/5 = 6.

<h3>What are nonnegative real numbers?</h3>
  • Non-negative real numbers are the set of positive real numbers that are bigger than 0 (zero).
  • That is, the true values are either positive or negative.
  • The collection will include numbers such as 0, 1, 2, 3, 4, 5, and so on.

To find the minimum value of 10x (3y/5):

Given - y = 3/(2x)

So, we want the bare minimum of,

  • = 10x + 3/5 × 3/(2x)
  • = 10x + 9/(10x)

Take the derivative to obtain:

  • = 10 - 9/(10x^2)

When you set it to zero, you get:

  • = 100x^2 - 9 = 0
  • = (10x-3)(10x+3) = 0
  • = x = ± 3/10

So, at x = 3/10, y = 5 and 10x + 3y/5 = 3 + 3 = 6.

Therefore, the munimum value is, at x = 3/10, y = 5 and 10x+3y/5 = 6.

Know more about nonnegative real numbers here:

brainly.com/question/26606859

#SPJ4

5 0
2 years ago
A marathon is 26.2 miles long sue wants to run a marathon in 4 hours what is the average number of miles she must run in an hour
harkovskaia [24]

Answer:

6.55 miles in one hour

Step-by-step explanation:

26.2 divided by 4 = 6.55

that would give you the miles in one hour.

Hope that helps:)

8 0
3 years ago
PLSSS HELP IF YOU TURLY KNOW THISS
Lemur [1.5K]

Answer:

x=9

Step-by-step explanation:

6+5x=51

-6        -6

________

0   5x=45

     _   _

     5   5

x=9

4 0
3 years ago
Read 2 more answers
System of substitution <br> Y-9=-x<br> 3x-y=7
Vikentia [17]
3(y-9)-y=7
3y - 27 -y = 7
2y = 34
Y = 17

3(x) -17 = 7
3x = 24
X = 8

5 0
3 years ago
Read 2 more answers
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