MATHEMATICS HIGH SCHOOL

Can someone answer this question please?

Answers

Answer 1

Answer:

The least number of minutes used to make calls in this month were 1311 minutes, m ≥ 1311 .

Step-by-step explanation:

Given that monthly fee is $20

Payment for additional time in minutes is charged as $0.55 per minutes

The month call bill is at least $85.55, where m is the number of call minutes used that month. This means ;

m*$0.05 +$20 ≥ $85.55

The inequality to form is;

0.05 m +20 ≥ 85.55

Solving this inequality

0.05 m + 20 ≥ 85.55

0.05 m ≥ 85.55 - 20

0.05 m ≥ 65.55

m ≥ 65.55 / 0.05

m ≥ 1311

The least number of minutes used to make calls in this month were 1311 minutes.

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Inequalities :brainly.com/question/10782172

Keywords : monthly fee, additional charge, per minute, charged, inequality

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A sample with which of these variances has a standard deviation that is greater than the variance?A. 2.25 B. 1.75 C. 0.75 D. 1.25
25d-14d+8d=95 whats the value of d and show work
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What is the perimeter of a triangle that has two sides measuring 7 centimeters and a third side measuring 9 centimeters?

Answers

The answer is 23cm just add the sides

The perimeter is the sum of all of the lengths of the sides. To find the perimeter, add together the length of each side.

For this triangle, our side lengths are 7, 7, and 9.

7 + 7 = 14

14 + 9 = 23

The perimeter of a triangle that has two sides measuring 7 centimeters and a third side measuring 9 centimeters is 23 centimeters.

Hope this helps!! :)

(5x+6) over 2 = 3 (4x+12)

Answers

x= -66/19

Multiply 2 on both sides:

2*(5x+6)/2=3(4x+12)*2

Simplify:

5x+6=24x+72

Subtract 6 from both sides:

5x+6-6=24x+72-6

Simplify:

5x=24x+66

Subtract 24x from both sides:

5x-24x=24x+66-24x

Simplify:

-19x=66

Divide both sides by -19

-19x/-19=66/-19

Simplify:

x= -66/19

A container at a paper clip factory holds 2.1*10^3 pounds of paper clips. There are 9.6*10^5 paper clips in the container. Find the approximate weight of each paper clip in ounces. (1 pound= 16 ounces) Show Your Work.

Answers

Answer:

The approximate weight of each paper clip is 0.035 ounce.

Step-by-step explanation:

A container at a paper clip factory holds 2.1*10^3 pounds of paper clips.

= $2.1*1000=2100$ pounds

There are 9.6*10^5 paper clips in the container.

= $9.6*100000=960000$

Now we get that 960000 paper clips weigh 2100 pounds.

So, each paper clip will weigh = $(2100)/(960000)$ = 0.0021875 pounds

And 1 pound = 16 ounces

0.0021875 pounds = $16*0.0021875$ = 0.035 ounce

Hence, the approximate weight of each paper clip is 0.035 ounce.

Divide the total weight (2.1 * 10^3 lbs.) by the total quantity of things (9.6 * 10^5) to get the lbs./paperclip.

Then, multiply that number by 16 to get ounces/paperclip.

Read the complete problem before answering. Tang bought m of rope. Rope costs $1.30 a meter. How much did Tang spend? A student solved the problem this way. m = 1.5 m Let n represent the amount Tang paid for rope. n = 1.5 × $1.30 n = $1.95 Tang spent $1.95. Use a similar strategy to solve this problem. Jeff bought yards of blue denim and yards of black denim. Denim cost $4.30 a yard. How much did Jeff spend on denim? A. $3.50 B. $7.80 C. $12.90 D. $15.05

Answers

You would do 4.30*(how many yards) which would equal the total price. But I cannot solve it for you seeing as the question lacks the necessary information.

Find the constant of variation k for the direct variation 2x +6y = 0

Answers

A relationship between two variables in which one is a constant multiple of the other. The constant here is also called the constant of variation. In order to obtain this value, we manipulate the equation by isolating the variables. We do as follows:

2x +6y = 0
y = -x/3

Therefore, the constant of variation is -1/3. Hope this answers the question. Have a nice day.

Suppose the population of a certain city is 5769 . It is expected to decrease to 4963 in 50 years. Find the percent decrease.

Answers

Answer:

≈ 13.98%

Step-by-step explanation:

As the total population is 5769 in the initial period, you must find the percentage that repesents 4963 that is the expected population.

4963/5769=0.8602

Then you multiply it by 100 to transform it into percentage

0.8602*100=86.02%

Then it's just necesary to subtract that from 100% and that numbers is the percentage of decrease

100% - 86.02% = 13.98%

Also you can say that is approximately 14%

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