Anakin knows the y intercept of a parabola is (0, 5). Does he have enough information to write the equation of the parabola?

Answer:

a: y=70x

b: y=70x+100

c: They are parallel to each other, with equation b's line being 100 dollars above equation a.

Step-by-step explanation:

They both have the same slope (70), but new customers will have a y intercept of 100 because of the one-time fee.

c)

Step-by-step explanation:

everybody use their cable difference so when you graph out the amount of cable which come with data the previous customers data and cable rates would be different then the new customers and the company should be able to tell that . but it still does happen today

Answer:

x+4

Step-by-step explanation:

If you plug in the answer choices (x+4, x-4, x+2, x-2) into (x-1) (insert solution), x+4 gives you x^2+3x-4. :)

Answer:

Initial amount: 934 g

After 80 years: 147 g

Step-by-step explanation:

\( A(t) = 934 (\dfrac{1}{2})^\frac{t}{30} \)

The initial amount occurs at t = 0.

\( A(0) = 934 (\dfrac{1}{2})^\frac{0}{30} \)

\( A(0) = 934 (\dfrac{1}{2})^0 \)

\( A(0) = 934 \times 1 \)

\( A(0) = 934 \)

After 80 years, t = 80.

\( A(80) = 934 (\dfrac{1}{2})^\frac{80}{30} \)

\( A(80) = 934 (\dfrac{1}{2})^\frac{8}{3} \)

\( A(80) = 934 (0.15749) \)

\( A(80) = 147 \)

Answer:

y+4 because bishh that's the answer lol your welcome

Answer:420

Step-by-step explanation because we are looking at how much time to multiply by 20

Answer:

They sold 30 adult tickets and 50 kids tickets.

Step-by-step explanation:

This question is solved by a system of equations.

I am going to say that:

x is the number of adult tickets sold

y is the number of kids tickets sold.

80 tickets are sold

This means that \(x + y = 80\), or also, \(x = 80 - y\)

For a Saturday matinee, adult tickets cost $7.50 and kids under 12 pay only $6.00. Tickets were sold for a total of $525.

This means that:

\(7.5x + 6y = 525\)

Since \(x = 80 - y\)

\(7.5(80 - y) + 6y = 525\)

\(600 - 7.5y + 6y = 525\)

\(1.5y = 75\)

\(y = \frac{75}{1.5} = 50\)

\(x = 80 - y = 80 - 50 = 30\)

They sold 30 adult tickets and 50 kids tickets.

Answer:

5x+3>23

Step-by-step explanation:

x \(\geq\)4

Answer:

Below

Step-by-step explanation:

distance / rate = time

1 mi / (45 mi/hr)  = 1/45 hr = .02222 hr = 1 1/3 min

11.3 min

...............

Answer:

182=9=3×3 Hence we have two 3's as prime factors. The prime factorization for 72 is 2×2×2×3×3 .

Step-by-step explanation:

The quantity of each colour beads that are in the necklace include the following:

Purple beads = 56

Purple beads = 56silver beads = 24

A ratio is defined as the mathematical expression that shows the number of times one value is contained in another value.

The number of purple beads = 14

The number of silver beads ,= 6

The total quantity of beads = 80

Therefore the total combination = 14+6 = 20

For purple beads = 14/20 × 80/1

= 1120/20 = 56

For silver beads = 6/20×80/1

= 480/20= 24

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Answer:

B

Step-by-step explanation:

rational number means comparison between two numbers

eg: 1:3 or 1/3 or 0.333

irritional number does not

The one of the numbers is an irrational number that is A) 134 / 675

Rational numbers are numbers which can be written in the form of \(\dfrac{a}{b}\)where a and b are integers. Example: 1/2, 3.5 (which is writable as 7/5) etc.

Irrational numbers are those real numbers which are not rational numbers.

Noted that all natural numbers are integers, all integers are rational numbers. That means, natural numbers are not irrational.

For example

: 1:3 or 1/3

or 0.333

But irrational number does not.

The rational number means the comparison between two numbers

A) 134 / 675 = 0.19

B) 3.

C) 7.676767…

D) 8.12131415…

So,  A) 134 / 675

This is an irrational number

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Sasha is 3 yards tall. When she went to the zoo she learned that the giraffe is three times as tall as she is. Giraffe is 252 inches than Sasha.

An algebraic expression is a mathematical phrase that can contain numbers, variables, and operators (such as +, -, x, and /). It can represent a specific value or a general rule for calculating a value. Examples of algebraic expressions include 2x + 3, x² - 4, and (x + y)/z.

There are several types of algebraic expressions, including:

If Sasha is 3 yards tall, then the giraffe is 3 times as tall as she is, or 33 = 9 yards tall.

Since 1 yard = 36 inches, then 9 yards = 936 = 324 inches.

Therefore, the giraffe is 324 inches - (3*36) = 252 inches taller than Sasha.

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He spent $22.5 on the student discount card.

This question is solved using proportions.

The cost of each card is of $1.50.

Paul bought 15 passes, that is, 15 cards.

Considering that he bought 15 cards, each for $1.50, his spending was of:

He spent $22.5 on the student discount card.

The simplified expression of \(\frac{x^{3}-8x^{2}}{x^2-64}\) is \(\frac{x^2}{x + 8}\)

The expression is given as:

\(\frac{x^{3}-8x^{2}}{x^2-64}\)

Factor the numerator

\(\frac{x^{2}(x-8)}{x^2-64}\)

Express the denominator as a difference of two squares

\(\frac{x^{2}(x-8)}{(x-8)(x + 8)}\)

Cancel out the common factor

\(\frac{x^2}{x + 8}\)

Hence, the simplified expression of \(\frac{x^{3}-8x^{2}}{x^2-64}\) is \(\frac{x^2}{x + 8}\)

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Step-by-step explanation:

Abunch of bananas cost $4, a pineapple cost $2 more than a bunch of bananas, and 4 apples cost one-half of a pineapple. question: 1. write an equation that shows the cost of a pineapple (p) in terms of bananas (b). use this equation to find the cost of a pineapple. 2. write an equation that shows the cost of 4 apples (a) in terms of a pineapple (p). use this equation to find the cost of 4 apples. 3. write an equation that shows how much more a bunch of bananas cost compared to 4 apples where x is the unknown value. then, solve the equation.

Answers

refer to pic

Answer:

To find the product of matrices AB, we need to multiply the elements of the rows of matrix A with the corresponding elements of the columns of matrix B, and then sum these products.

Since matrix A is a 2x2 matrix and matrix B is a 2x3 matrix, we can perform the multiplication as follows:

AB = | 1 2 |   | 1 2 3 |   | (1*1)+(2*4)  (1*2)+(2*5)  (1*3)+(2*6) |

    | 3 4 | x | 4 5 6 | = | (3*1)+(4*4)  (3*2)+(4*5)  (3*3)+(4*6) |

                          |              |              |              |

    |  9 12 15 |          |  9  12  15 |

Therefore, the product of matrices AB is a 2x3 matrix, and the answer is C) 2x3.

Answer: -18, -15, -5, 0, 9, 18

The answer is A. Quotient

Answer:

5b2 - b -2

Step-by-step explanation:

The answer is (c)

Answer:

245÷9 =0 witt remainder 9

n=1422 is the sample that would be required in order to estimate the mean per capita income at the 99 % level of confidence with an error of at most $0.39.

The fraction of related CIs over the long run that actually contain the parameter's true value is what is meant by the confidence level. The parameter's true value, for instance, should be present in 95% of all intervals computed at the 95% level. The range of values within the 95% confidence interval represents the population's actual mean, with 95% confidence. The sample mean (the center of the CI) will differ between samples due to natural sampling variability. The process itself, not a certain CI, is what inspires confidence. According to the 68-95-99.7 Rule, 95% of values are within two standard deviations of the mean, hence to calculate the 95% confidence interval, one need only add and deduct two standard deviations from the mean.

At 99% confidence interval the critical value is \(z_{0.005}\)=2.58

Margin of error=0.39

Or, \(z_{0.005}\)(σ/√n)=0.39

Or, 2.58(5.7/√n)=0.39

Or, n=(2.58×(5.7/0.39)²

Or, n=1422

n=1422 is the sample that would be required in order to estimate the mean per capita income at the 99 % level of confidence with an error of at most $0.39.

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Answer:

2x^3-5x^2-28x+15 -------------------------expanded

2x^3-5x^2-28x+15--------------------simplified

Step-by-step explanation:

\left(2x-1\right)\left(x+3\right)\left(x-5\right)

=2x^2x+2x^2\left(-5\right)+5xx+5x\left(-5\right)-3x-3\left(-5\right)

simplyfied

\left(2x^2+5x-3\right)\left(x-5\right)

=2x^2x+2x^2\left(-5\right)+5xx+5x\left(-5\right)-3x-3\left(-5\right)

=2x^3-5x^2-28x+15

Answer:

the data is linear because it can go in a straight line and does not stop.

y = x - 1 ------- equation 1

2x - 3y = -1 equation 2

Since, y = x - 1 in equatiion 1

substitute y = x - 1 in equation 2

2x - 3(x - 1) = -1

Open the parenthesis

2x - 3x + 3 = -1

Collect the like terms

2x - 3x = -1 - 3

-x = -4

Divide both sides by -1

-x/-1 = -4/-1

x = 4

To find y, substitute the value of x into equation 1

y = x - 1

y = 4 - 1

y = 3

The answer is x = 4 and y = 3

In this question, we are not given the function /equation, however, we are to find the funtion that takes real numbers x :

so, we will map all subset of the set R of all real numbers into R

lets take :

f(x) = 2(x) , where x= 0; +_1; +_2; +-3.....is a mapping of R of all intergers

(a) Multipy by -1

f(x) = -2x

(b)Add 1

f(x) = 2x +1

(c) square root

f(x) = √(2x+1)

(d) take reciprocal

x =√(2y +1) ... solve for y

y ^-1 = (x^2 -1) /2

expression for f (x) = √(2x+1)

Domain : x ≥-1/2

interval notation :[-1/2 ; ∞)

Answer:

Annette should plan to spend 2.25 hours walking back.

Step-by-step explanation:

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's assume the distance of the race is D miles.

Annette spends her time running the distance of the race, which takes:

Time running = D / 9 hours

She then walks back the same distance, which we need to find the time for:

Time walking = D / 3 hours

Since Annette has a total of 3 hours for her training, the sum of the running time and walking time should equal 3 hours:

D / 9 + D / 3 = 3

To simplify the equation, we can multiply all terms by 9 to eliminate the denominators:

D + 3D = 27

Combining like terms:

4D = 27

Dividing both sides of the equation by 4:

D = 6.75

So, the distance of the race is 6.75 miles.

To find the time Annette should spend walking back, we substitute the distance into the time-walking formula:

Time walking = D / 3 = 6.75 / 3 = 2.25 hours

Therefore, Annette should plan to spend 2.25 hours walking back.

Answer: 30

Step-by-step explanation:

2x10=20

so, u have to do

3x10=30

Answer: 50 students

Step-by-step explanation:

A ratio is very similar to a fraction, just put together differently. So, there are two ways of doing this. First, you could imagine this as a fraction

2 + 3 = 5 so 5 is our denominator. Then we need our numerator. Because we have the number or boys, we use that part of the ratio as our numerator

2/5 is our fraction, meaning two-fifths of the class are boys.

Now, to find the actual number in the class, we  will use a proportion.

\(\frac{20}{x} =\frac{2}{5}\)

Cross-Multiply (multiply 20(5) and 2(x)) and you will end up with this

\(100=2x\)

Now, divide 100 by 2 and you will get your answer: 50

OR

The second way of doing this is to set up a proportion with the existing ratio, like so:

\(\frac{20}{x} =\frac{2}{3}\)

Like before, cross multiply and then divide to isolate your x and you should get 30, which is the number of girls. Add 20+30 and you will get 50.

Either process works the same, so just pick the one that makes the most sense to you!

Answer:

A=5

Step-by-step explanation:

Answer:

A=5

Step-by-step explanation:

7+3a=12+2a

-2a -2a

7+a=12

-7 -7

a=5