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Len [333]
3 years ago
13

Please help !! Solve –2.5x ≤ 25

Mathematics
2 answers:
lyudmila [28]3 years ago
6 0

Answer:

x\leq  -10

Step-by-step explanation:

-2.5x\leq 25-----> Multiply by -1:

2.5x\geq -25-----> Divide by 2.5:

x\geq -10

Hope this helps!

lutik1710 [3]3 years ago
5 0

Answer:

x ≥-10

Step-by-step explanation:

–2.5x ≤ 25

Divide each side by -2.5, remembering to flip the inequality

–2.5x/-2.5 ≥ 25 /-2.5

x ≥-10

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Let me represent the average number of hours of sleep all the students are your school caught the previous night
Dmitrij [34]

Answer:

(2+3)÷2=2.5

Step-by-step explanation:

Well, I got switched to a charter school, so my "school" consists of my twin and I and that's the amount of sleep we got rounded up....

(hope this helps ??)

7 0
3 years ago
Ace Truck leases its 10-ft box truck at $20/day and $0.50/mi, whereas Acme Truck leases a similar truck at $15/day and $0.55/mi.
Masja [62]

Answer:

a) f(x) = 0.5 \frac{dollars}{day} x + 20

g(x) = 0.55 \frac{dollars}{mi} x + 15

b) f(70)=0.5*70 +20 =55

g(70)= 0.55*70 + 15 =53.5

If we want to minimize the cost then we should rent the Acme Truck company.

Step-by-step explanation:

Assuming the following questions.

(a) Find the daily cost of leasing from each company as a function of the number of miles driven and sketch the graph of these functions.

For the Ace truck we know that leases its 10-ft box truck at $20/day and $0.50/mi. So then f(x) representing the daily cost is given by:

f(x) = 0.5 \frac{dollars}{day} x + 20

Where x represent the  number of miles driven

For the Acme Truck we know that leases a similar truck at $15/day and $0.55/mi, so then the g*x( representing daily cost would be given by:

g(x) = 0.55 \frac{dollars}{mi} x + 15

Where x represent the miles driven.

We can see the plot on the figure attached.

(b) Which company should you rent a truck from for 1 day if you plan to drive 70 miles and wish to minimize cost?

If we replace the value x=70 for both functions we got:

f(70)=0.5*70 +20 =55

g(70)= 0.55*70 + 15 =53.5

If we want to minimize the cost then we should rent the Acme Truck company.

7 0
3 years ago
I am drinking beer and you are drinking light beer. Your light beer is 1/3 less filling than my regular beer. I drink 3 beers. H
Sphinxa [80]

Using proportions, it is found that you have to drink 9 beers to be equally full.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

Your drink is 1/3 less filling, hence you have to drink 3 times the amount I drink to be equally full. I drink 3 beers, hence the number you drink is given as follows:

N = 3 x 3 = 9 beers.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

7 0
2 years ago
A regular room at the Great Wolf Lodge is $229.99. You have a discount code to get 20% off of the room rate. The sales tax on th
vovangra [49]
229.99*.20 = $46 off
229.99-46 = $183.99
$183.99*.13 =$23.92 sales tax added
183.99+23.92 = $207.91
 


6 0
4 years ago
Read 2 more answers
Arithmetic Sequence.<br><br>What is the explicit formula for -39, -139, -139, -339?​
creativ13 [48]

Answer:

  an = -39 -100(n -1)

Step-by-step explanation:

The given sequence can be described by a 3rd degree polynomial.* However, we suspect a typo, and that your intention is to have a formula for the arithmetic sequence ...

  -39, -139, -239, -339

This has a first term a1 = -39, and a common difference d = -100.

The model for the explicit formula is ...

  an = a1 +d(n -1)

Filling in the given values, the formula you seek is ...

  an = -39 -100(n -1)

_____

* That polynomial is ...

  an = 50n^3 +350n^2 -800n +461

This gives a sequence that starts ...

  -39, -139, -139, -339, -1039, -2539, -5139, -9139, ...

7 0
3 years ago
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