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kicyunya [14]
3 years ago
10

Solve this inequality for x 81 -1 1/5r <55

Mathematics
2 answers:
allsm [11]3 years ago
7 0

81-1\dfrac{1}{5}r < 55\qquad|\text{subtract 81 from both sides}\\\\-\dfrac{1\cdot5+1}{5}r < -26\qquad|\text{change the signs}\\\\\dfrac{6}{5}r > 26\qquad|\text{multiply both sides by 5}\\\\6r > 130\qquad|\text{divide both sides by 6}\\\\r > \dfrac{130}{6}\\\\r > \dfrac{65}{3}\to r > 21\dfrac{2}{3}

Jobisdone [24]3 years ago
6 0

The answer would be d thats how it was on my test


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Time Warner Cable charges $30 per hour and a trip fee of $55 for each service call.
r-ruslan [8.4K]

Answer:

y=30x+55

Step-by-step explanation:

$55 is constant because for each trip he will take $55 dollars so that gives you your y-intercept and m=$30 and x is the amount of hours worked. every time x increases he will be making more money

3 0
3 years ago
The amount of chlorine in a swimming pool is proportional to the volume of water. The pool has 2.5 milligrams of chlorine per li
stira [4]

Answer:

There are <u>20,000 milligrams</u> chlorine in the pool.

Step-by-step explanation:

Given:

The chlorine per liter of water in the pool is 2.5 milligrams.

The  volume of water in the swimming pool is 8000 gallons.

Now, to find the quantity of chlorine in the pool.

Let the quantity of chlorine be x.

The gallons of water in the swimming pool = 8000.

The milligrams of chlorine per liter of water in the pool = 2.5.

According to question, the amount of chlorine in the swimming pool is proportional to the volume of water.

So, 2.5 mg of chlorine is equivalent to 1 liter.

Thus, x is equivalent to 8000.

Now, to get the quantity of chlorine by using cross multiplication method:

\frac{2.5}{1} =\frac{x}{8000}

<em>By cross multiplying we get:</em>

20000=x\\\\x=20,000\ mg.

Therefore, there are 20,000 milligram chlorine in the pool.

6 0
3 years ago
What is the answer to 0=- 1/4(16)+b
Setler79 [48]

Answer:

<h2>b = 4</h2>

Step-by-step explanation:

0=-\dfrac{1}{4\!\!\!\!\diagup_1}\cdot16\!\!\!\!\!\diagup^4+b\\\\0=-4+b\qquad\text{add 4 to both sides}\\\\4=-4+4+b\\\\4=b\to b=4

5 0
3 years ago
Find an equation for the nth term of the arithmetic sequence. 9, 11, 13, 15...
saul85 [17]

Answer:

2n+7

Step-by-step explanation:

find the difference

and see the difference from the 2 Times table to the original sequence

and write it as an equation for this sequence

3 0
3 years ago
Read 2 more answers
Pls help me with this <br>ans should be well explained ​
Snezhnost [94]

Let's observe

#1st column

  • 3+2+1+4=10

10th alphabet=J

#2nd

  • 5+9+4+6=24

24th alphabet=X

#3rd

  • 2+1+3+3=9

9 th Alpha bet=I

#4th

  • 8+4+9+5=26

26th Alphabet=Z

#5th

  • 7+3+1+2=13

13 th alphabet=M

Option B is correct

5 0
3 years ago
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