A long distance phone company charges $1.01 for the first 25 minutes of a call, and then 99 cents for each additional minute. A call costs $9.56. How long did it last?

Answer:

12

Step-by-step explanation:

Given trinomial is [tex]x^2-bx+36[/tex].

Now we need to find the value of b that will make the trinomial [tex]x^2-bx+36[/tex] a perfect square.

[tex]x^2-bx+36[/tex]

[tex]=x^2-bx+36[/tex]

[tex]=x^2-bx+6^2[/tex]

compar with  [tex]=a^2-2ab+b^2=(a-b)^2[/tex]. we get:

a=x and b=6

then middle term -2ab=-2(x)(6)=-12x

compare -12x with -bx, we get b=12

Hence choice C. 12 is correct.

Answer:

The correct answer is option C.  12

Step-by-step explanation:

It is given a quadratic expression

x² - bx +  36

To find the value of b

From the above expression we can see that 36 is a perfect square,

6² = 36

We can write this expression as ( x - 6)² if b = 12

(x - 6)² = x² - 12x + 36

Therefore the correct answer is option C.   b = 12

Answer:

x=0       x = -6

Step-by-step explanation:

7x^2−5x=9x^2+7x

subtract 7x^2 from each side

7x^2-7x^2−5x=9x^2-7x^2+7x

-5x = 2x^2 +7x

Add 5x from each side

-5x+5x = 2x^2 +7x+5x

0 = 2x^2 +12x

Factor out a 2x

0 = 2x(x+6)

Using the zero product property

2x =0  x+6 = 0

x=0       x = -6

Answer:

Step-by-step explanation:

The measure of a central angle is equal to the measure of its intercepted arc. A chord is a segment that has is endpoints on a circle. ... A line is called a straight angle and it forms a 180 degree angle. A central angle is an angle with its vertex at the center of a circle and its sides are radii of the same circle.

Answer:

The x intercept will be (9,0) and the y intercept will be (0,-3.6)

Step-by-step explanation:

If you graph both of these points on the graph you can see the x intercept clearly but you have to solve for the y intercept by plugging it into y=mx+b equation.

He grates 6/8 pounds of cheese in all.

For this problem, you just have to add the numerators and keep the denominators.

4/8 + 2/8 = 6/8.

Remember, if the denominator is the same, just add the numerator.

When you add fractions remember only add the numerator. There has to be a common denominator. Like 8.

4/8 + 2/8

4+2=6

So the answer is 6/8

Answer:

[tex]8\pi\ ft[/tex]

Step-by-step explanation:

we know that

The circumference of a circle is equal to

[tex]C=\pi D[/tex]

where

D is the diameter

we have

[tex]D=8\ ft[/tex]

substitute

[tex]C=\pi (8)=8\pi\ ft[/tex]

Answer: [tex]8\pi\ \text{ft.}[/tex]

Step-by-step explanation:

We know that formula to calculate the circumference of a circle is given by :-

[tex]\text{Circumference}=\pi d[/tex], where d is the diameter of the circle.

Given: The diameter of the circle : [tex]d=\ 8\ ft.[/tex]

Then , the circumference of a circle is given by :-

[tex]\text{Circumference}=\pi (8)=8\pi\ \text{ft.}[/tex]

Hence, the exact circumference of a circle with diameter equal to 8 ft = [tex]8\pi\ \text{ft.}[/tex]

Answer:

160,000

Step-by-step explanation:

400 * 200 is 80,000 just walking around once, so then multiply it by two.

80,000 * 2 is 160,000

Answer:

h(x) = (x+2) ^2 -2x -3

Step-by-step explanation:

If we have to shift 2 units left the we have to replace x by x+2 i.e

h(x) = (x+2)^2-2(x+2)+1

      = (x+2)^2 -2x-4 +1

       = (x+2)^2 -2x -3

Answer:

They all have 3 cups together.

Step-by-step explanation:

I added 1/2 plus 1 3/4 plus 1 4/6 on a calculator and got 3.91666666667

Basically 3.

Please list the answer choices because anything that is greater than 0.5 is correct. If the fraction’s denominator is larger than 2 it is incorrect

Answer:

A = (800 yd - x)x, [0, 800]

Step-by-step explanation:

The farmer fences in this rectangular garden using 1600 yds of fencing.  Using the formula for the perimeter of a rectangle,

P = 2x + 2L, where x is the width and L is the length.  Here P = 1600 yd.

Solving for L:  1600 yd = 2x + 2(L) →  800 yd = x + L  →  L = 800 yd - x.

The area of the rectangle is A = L·x.  Subbing (800 yd - x) for L, we get:

A = (800 yd - x)x.  This is the desired formula for the area of the rectangle as a function of x alone.  Neither length nor width can be negative, so the domain of this function A is x ≤ 800 yd.

Let the length of the rectangular garden = l yards

And the width of the garden = w yards

Farmer has the fence in length = 1600 yards to cover all the sides of the garden

Therefore, Perimeter of the rectangular garden = 1600 yards

Since, perimeter of the rectangular garden is given by the expression,

Perimeter = 2(l + w)

By substituting the values in the expression,

1600 = 2(l + x)

l + x = 800

l = 800 - x -------(1)

Since, area of the rectangle = Length × Width

                                                = l × w

                                                = lx

Therefore, by substituting the value of 'l' in terms of 'x' in from equation (1),

Area of the rectangular garden = (800 - x)x

If the area of the garden is represented by by the function A(x),

A(x) = (800 - x)x

A(x) = 800x - x²

Since, Area can not be negative or zero,

Domain of the function will be 0 < x < 800

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12,347/10

=1,234.7

So 1/10th of the income would be

$1,234.7

One tenth of an income of $12,347, calculated by dividing by 10, gives the result $1,234.7. Dividing by 10 is a common mathematical method for finding a tenth of a value.

To calculate one tenth of an income of 12,347 you need to divide 12,347 by 10. This will give you the value of 1,234.7. This method is often used in mathematics to calculate percentages, fractions, or a portion of a given value.

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Answer: b is the answer

Step-by-step explanation:

2400-1200=1200

2400-1200=1200

hopes this help

Answer:

32

Step-by-step explanation:

Thankyouuuuuuuuuuuuuuuuuu

Answer:

45/28

Step-by-step explanation:

Convert them to mixed fractions

(2 * 4 + 1) / 4 ÷ (1 * 5 + 2) / 5

8 + 1 / 4 ÷ 5 + 2 / 5

9/4 ÷ 7/5

Flip the second fraction and flip the sign - to multiply.

9/4 × 5/7

9 × 5 = 45

4 × 7 = 28

45/28

This could be left as a fraction or converted to a number:

1.60714285714

Answer:

The Answer is 1 17/28

Step-by-step explanation:

1) turn the mixed fraction into a regular fraction

2 1/4 divided by 1 2/5 = 9/4 divided by 7/5

2) Then Multiply

9/4 X 7/5= 45/28 (Straight across)

3) Simplify 45/28

Give you 1 17/28

Hopes this helps!

Prediction for the number of unsuccessful rolls is 15.

There is [tex]\frac{1}{6}[/tex] chance of rolling number 6 on the cube. If we want to find out what is the prediction for rolling number 6 in 18 rolls, we need to multiply [tex]6*\frac{1}{6}[/tex] which is 3. So if we roll a cube 18 times, we will probably got number 6 three times. When we subtract 3 from 18 (18-3), we get 15. That is the answer to your question.

I hope I helped you. I will be really happy, If you mark my answer as the brainliest.Your David

A=bh for a rectangle. 16x3= 48in(width/base) 16x2= 32in (height) so A=48x32. A= 1,536

Answer:

2

Step-by-step explanation:

A debt greater than Carol's would bear a value that is numerically larger but still under the negative sign. In simpler terms, any debt greater than -$130 is indeed a greater debt.

The question asks, 'Which of the following account balances represents a debt greater than Carol's?' When working with debts in math, it's important to remember that the larger the number, the greater the debt. So any number larger than -$130 represents a debt greater than Carol's.

For example, a balance of -$150 would be a larger debt than Carol's -$130. Why? Because when you owe $150, it's more than owing $130, despite the negative sign. Conversely, a balance of -$100 would be less of a debt than Carol's, because owing $100 is less than owing $130.

It's a somewhat counterintuitive part of working with negative numbers, but once you understand that the negative sign represents a debt, it starts to make sense. The concept of debt here is similar to examples provided where people often have a tendency to hold onto a savings account while carrying a credit card debt.

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An account balance which represents a greater value than Carol's account balance is -$165

Using the parameters given for our Calculation;

Values which represents a greater debt than Carol's are values which falls farther to the left of 130 on a number line.

From.the values given, only -165 falls further to the left of -130 on a number line.

Hence, the correct answer is -$165.

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x+14=23/-14

x=9

9+14=23

9 because 14+9 equals 23

Answer:

B. He multiplied the dividend by 100 instead of 10.

Step-by-step explanation:

Chen had to divide [tex]1.926[/tex] by [tex]0.9[/tex]. To make it easier to divide, he thought of multiplying both the dividend and the divisor by 10.

Chen multiplied the divisor by 10 but mistakenly multiplied the dividend by 100 instead of 10.

So his whole division problem was changed.

Therefore, the correct answer option is B. He multiplied the dividend by 100 instead of 10.

Answer:

option B

He multiply the dividend by 100 instead of 10

Step-by-step explanation:

Given that,

divisor  = 0.9

dividend = 1.926

Chen decided to multiply each by 10 to get

divisor  = 0.9 x 10 = 9

dividend = 1.926 x 10 = 19.26

but unfortunately he multiply the dividend by 100

As,

1.926 x 100 = 192.6

So,

Chen's error was that he multiply the dividend by 100 instead of 10.

Answer:

90

Step-by-step explanation:

If you take 9 pictures on each page that is gonna be its own number so you than add 6 and 4 and get ten than multiply it by 9 and boom you get 90

Carli has a total of 90 pictures in her photo book, with 54 pictures from her trip to Fort Lauderdale and 36 pictures from her trip to Las Vegas.

In order to find the total number of pictures in Carli's photo book, we need to calculate the number of pictures on each page for both trips and then sum them up. Carli put 9 pictures on each page. She filled 6 pages with pictures of her trip to Fort Lauderdale, so the number of pictures for this trip is 6 pages x 9 pictures per page = 54 pictures. Carli also filled 4 pages with pictures of her trip to Las Vegas, so the number of pictures for this trip is 4 pages x 9 pictures per page = 36 pictures. The total number of pictures in her photo book is 54 pictures + 36 pictures = 90 pictures.

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Answer:

A. 8kg

Step-by-step explanation:

You don't really need any solution but if

1000 paperclips = 1 kg, then

8000 paperclips = 8kg

Final answer:

To determine the mass of 8,000 paperclips in kilograms, divide 8,000 by 1,000, since 1,000 paperclips weigh 1 kilogram. The result is 8 kilograms, making option A the correct answer.

Explanation:

The question concerns the mass of paperclips in grams and kilograms, which are units of mass in the metric system. To find out how many kilograms 8,000 paperclips would weigh, we need to use the given conversion that 1,000 paperclips have a mass of 1 kilogram. Here's the step-by-step calculation:

Since 1,000 paperclips weigh 1 kilogram, we can find out how many groups of 1,000 paperclips there are in 8,000 paperclips by dividing 8,000 by 1,000.

8,000 paperclips ÷ 1,000 paperclips/kg = 8 kg

Therefore, 8,000 paperclips have a mass of 8 kilograms.

The correct answer to the question is A. 8 kg.

y - 2x = 1

6x - y = 7

Adding equations,

4x = 8

x = 2

y = 2x + 1 = 5

Answer: (2,5)

Check:

5-2(2)=1, good

6(2)-5=7, good

To solve the system of equations y - 2x = 1 and 6x - y = 7, we use the elimination method. By aligning the equations and setting the right sides equal, we can solve for 'x' and then 'y', resulting in the solution x = 2 and y = 5.

Solving the System of Equations

To solve the system of equations:

y - 2x = 1

6x - y = 7

We can use the method of substitution or elimination. In this case, the elimination method seems efficient. Let's align the equations:

y = 2x + 1

6x - y = 7

We can eliminate y by adding the two equations. First, rearrange the second equation:

y = 2x + 1

y = 6x - 7

By setting the right sides equal to each other, we get 2x + 1 = 6x - 7. Solving for x gives us x = 2 and substituting x back into either equation yields y = 5.

Therefore, the solution to the system of equations is x = 2 and y = 5.

Answer:

60% of 243 = 145.80

Hope this helps,

Davinia.

60% × 243 =

(60 ÷ 100) × 243 =

(60 × 243) ÷ 100 =

14,580 ÷ 100 =

145.8

how to make sure it is right we do the reverse of what we did

145.8 ÷ 243 =

0.6 =

0.6 × 100/100 =

0.6 × 100% =

(0.6 × 100)% =

60%

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│Hope this helped  _____________________│

│~Xxxtentaction ^̮^ _____________________│

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Answer:

C

Step-by-step explanation:

a-b-c

-3-4-(-5)

-3-4+5 [as - - = +]

-2

Final answer:

A real-world population growth graph may differ from a game's graph in terms of actual population numbers, reflecting real-life constraints versus game assumptions, although the overall S-shape indicating logistic growth may be similar. This shows the importance of graph type and display in interpreting growth rates and relationships in data.

Explanation:

When comparing a graph of a scientist’s data on population growth to a graph representing population growth in a game, there may be notable differences. The x-y values on the graphs indicating the time frames for the growth curves would generally be the same since time is a consistent measure. However, while the overall S-shape of a logistic growth model might be similar, representing the slowdown in growth as the population reaches carrying capacity, the actual population numbers corresponding to the starting populations could differ based on real-world limitations versus game conditions.

Further, displaying data graphically helps in interpreting growth rates and relationships between data points. For instance, in a scenario where an individual receives a $2 raise each year, the growth rate decreases over time unless the raise amount also increases. In terms of graphing, economists and other professionals use various types of graphs like pie charts or bar graphs to visualize data, such as the distribution of hours played amongst students, or the comparison of populations among countries. The choice of the graph type and how it's displayed can impact the interpretation of the data.

Moreover, when comparing real data with that from a game, the assumptions and simplifications made in a game's model might not perfectly reflect real-life complexities, leading to different population growth dynamics and consequently different shapes of the graph beyond just the starting population numbers.

Answer:

option C)

(19,2,5)

Step-by-step explanation:

| 4 | x

| 12 | y

| 5 | z

After reducing the matrix in row-echelon form we are left with three equation as following

Equation 1

0x + 0y + 1z = 5

Equation 2

0x + y1 + 2z = 12

Equation 3

1x + 0y -3z = 4

As in first equation

0 + 0 + z = 5

z = 5

Put this value of z in equation 2 and 3

y + 2(5) = 12

y + 10 =12

y = 12 - 10

y = 2

x + 0 -3(5) = 4

x - 15 = 4

x = 4 + 15

x = 19

Answer:

do practice review packets and grade yourself

Step-by-step explanation:

there is a website called escambia and google escambia algebra 1 eoc review and there is every thing you need to pass.

please mark me brainliest

Final answer:

To perform well in the Algebra 1 EOC exam, students should study the topics specified by the instructor using provided tools like study guides and flashcards, engage in self-evaluation and active learning, and maintain a good study routine.

Explanation:

To excel in your Algebra 1 End-of-Course (EOC) exam, it is crucial to have a structured and effective study plan. Begin with a clear understanding of the topics you need to cover, such as algebraic expressions, equations, exponents, and functions.

Utilize tools provided by your instructor, like reviews, study guides, flashcards, and PowerPoints. These are specifically tailored to what your instructor deems important and may include topics like number patterns, finance, growth, trigonometry, analytical geometry, and statistics.

Regular self-evaluation helps identify areas that need more attention. Review quizzes and textbook chapter questions, as they are likely indicative of the questions you'll face during the exam. Additionally, engage in active learning by organizing information into categories and patterns, which helps in understanding and retaining complex concepts.