witch of these is a correct expansion of (3x-1)(4x^2+5)​

Answers

Answer 1

Answer:

12x^3 - 4x^2 + 15x -5


Related Questions

Which of the following sequences of transformations is used to obtain figure A’ B’ C’ D’ from figure ABCD?

Answers

Answer:

Last one

Step-by-step explanation:

Imagine it as a mirror or like a paper folding in half, then figure out the direction it shifts.

40x+24y-56.
Get to factor the expression

Answers

The factored form of given expression is:

[tex]40x + 24y - 56 = 8(5x + 3y-7)[/tex]

Solution:

Given that we have to factor the given expression

Given expression is:

40x + 24y - 56

We can factor the expression by taking the greatest common factor out

When we find all the factors of two or more numbers, and some factors are the same , then the largest of those common factors is the Greatest Common Factor.

Find G.C.F of 40, 24 and 56

The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24

The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40

The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56

Then the greatest common factor is 8

Thus factor out 8 from given expression

[tex]40x + 24y - 56 = 8(5x + 3y-7)[/tex]

Thus the given expression is factored

prince is 6n years old. jordan is (3n + 10) years older than prince
a) find jordans age

b) find the total age of prince and jordan

c) kimberly is 9 yrs younger than prince. find kimberlys age

d) find the total age of three people


e) if n = 4 find the total age of the three people

Answers

A. 6n+3n+10= 9n+10. Jordan is 9n+10 years old.

B. 6n+9n+10= 15n+10. The total age of Prince and Jordan is 15n+10.

C. 6n-9. Kimberly is 6n-9 years old.

D. (6n+9n+10)+6n-9 = 15n+10+6n-9 = 15n+6n+10-9 = 21n+1. The total age of Prince, Jordan and Kimberly is 21n+1

E. 21•(4)+1=84+1=85. The total age of Prince, Jordan and Kimberly is 85 years.

What percent of 500,000 equals 250,000?

Answers

50%

500,000 * 0.5 = 250,000

Answer:

The answer is 50%. 50% of 500,000 is 250,000.

jess walked for 45 min at 3km/h and then ran for half an hour at xkm/h. at the end of the time she was 6 km from starting point. find the x value?

Answers

Hey there! :)

~ They give us some good information in this equation. Let's use it! This can be used to change "45 min" into ".75 hours".

~ Now, let's write an equation; "distance = speed * time."

~ 3(.75) + .5x = 6

~ 2.25 + .5x = 6

~ .5x = 6 - 2.25

~ .5x = 3.75

~ x = 3.75/.5

~ x = 7.5 km/hr

Final answer:

To find Jess's running speed, the total distances she walked and ran are calculated and added to equal the given total distance of 6 km. Solving the equation 6 km = 2.25 km + 0.5x km reveals that Jess ran at 7.5 km/h.

Explanation:

To find the value of x, which represents Jess's running speed, we can use the information provided to set up equations based on the distance formula: distance = speed × time.

Jess walked for 45 minutes at 3 km/h. First, convert 45 minutes to hours by dividing by 60: 45 minutes / 60 minutes/hour = 0.75 hours. The distance walked is:

Distance walked = Speed × Time = 3 km/h × 0.75 hours = 2.25 km.

Next, Jess ran for 30 minutes or 0.5 hours at x km/h. The running distance is:

Distance ran = Speed × Time = x km/h × 0.5 hours = 0.5x km.

According to the question, the total distance from the starting point after both activities is 6 km, so:

Total distance = Distance walked + Distance ran

6 km = 2.25 km + 0.5x km

Now, solve for x:

6 km - 2.25 km = 0.5x

3.75 km = 0.5x

x = 3.75 km / 0.5

x = 7.5 km/h

Therefore, Jess ran at 7.5 km/h.

PLS HELP!!!!!
What is the value of tanC in this triangle

A)24/25

B)7/24

C)7/25

D)24/7

Answers

Answer:

d. 24/7 i belive

Step-by-step explanation:

Final answer:

To find the value of tanC in the triangle, calculate the angles A, B, and C using the cosine rule and understanding the relationship between these angles.

Explanation:

The value of tanC in the triangle can be calculated using the given information.

Calculate angle A using the cosine rule: 16 = 25 + 36.Calculate angle C by the cosine rule: 36 = 16 + 25. Since cos(2A) = 2cos²(A) - 1, it implies that C = 2A.The external angle at B is 3A.

1/2 times 6 minus y equals y

Answers

Answer:

I believe the answer to this question is: 3/2 simplified to 1  1/2.

Four muffins cost $12. Complete the modle to find the cost per muffins

Answers

Answer:

3$

Step-by-step explanation:

12÷4=3

each muffin cost 3$

what is the sum of two numbers is 40 and their difference is 10

Answers

Answer:

The two numbers are 25 and 15.

Step-by-step explanation:

Let's find out the two numbers, this way:

x = first number

y = second number

This is the equations system:

x + y = 40

x - y = 10

Solving for x in the first equation:

x + y = 40

x = 40 - y

Solving for y in the second equation:

40 - y - y = 10

40 - 2y = 10

-2y = 10 - 40

-2y = - 30

y = -30/-2 = 15

Solving for x:

x + y = 40

x + 15 = 40

x = 40 - 15

x = 25

The two numbers are 25 and 15.

What is the intersection of the sets A= {2,3,4,7} and B= {2,5,7,13}

Answers

Answer: { 2 , 7 }

Step-by-step explanation:

The intersection of a set is what the sets have in common. From the given sets , the numbers common to the two are 2 and 7 , so the intersection of the sets will be { 2 , 7 }

83.40 divided by 12

Answers

Answer:

3.33 or 10/3

Step-by-step explanation:

simplify by dividing 40/12 by 4:

10/3 or 3.33

The value of the answer on dividing 83.40 by 12 is 6.95, i.e. 83.40 ÷ 12 = 6.95.

What is division?

It is the basic arithmetic operation, in which you are separating the number into some parts. One of the fundamental mathematical operations is division, which involves breaking a bigger number into smaller groups with the same number of components.

Given:

83.40 divided by 12,

The above expression can be written as,

83.40 ÷ 12

Divide the term 83 by 12. You get a quotient of 6 and a reminder of 11 put the dot and then take the value of 4 down, the number will be 114 divided by 12. You will get 9 quotients and 6 as a reminder, Then drop the value 0 and the new number is 60, divide 60 by 12 you will get question 5 and the remainder zero.

Thus, 83.40 ÷ 12 = 6.95.

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What is the answer for the equation 8(2x+9)=56

Answers

STEPS:

1. Start my distributing the 8 through the parentheses on the left side of the equation. 8 times 2x is 16x and 8 times 9 is 72. So we have 16x + 72 = 56.

2. Next, isolate the x-term by adding 72 to both sides of the equation

and we get 16x = -16.

3. Divide both sides by 16 and x = -1.

- 1/3 square root-90

Answers

Answer: [tex]-i\sqrt{10}[/tex]

Step-by-step explanation:

Assuming that you need to simplify the expression, below is the explanation to do it.

Given the following expression:

[tex]-\frac{1}{3}\sqrt{-90}[/tex]

You need to decompose the radicand (The number inside the square root) into its prime factors:

[tex]90=2*3*3*5=2*3^2*5[/tex]

Knowing that, you can rewrite the expression in this form:

[tex]=-\frac{(1)(\sqrt{-2*3^2*5})}{3}=-\frac{\sqrt{-2*3^2*5}}{3}[/tex]

Since [tex]\sqrt{-1}=i[/tex], you must substitute it into the expression:

[tex]=-\frac{i\sqrt{2*3^2*5}}{3}[/tex]

Now you need to remember the following property:

[tex]\sqrt[n]{a^n}=a^{\frac{n}{n}}=a[/tex]

Then, applying that property, you get:i:

[tex]=-\frac{3i\sqrt{2*5}}{3}=-\frac{3i\sqrt{10}}{3}[/tex]

Finally, you must divide the numerator and the denominator by 3. So, you get:

[tex]=-\frac{i\sqrt{10}}{1}=-i\sqrt{10}[/tex]

Ascending Order
18, 1.8, 18, .018

Answers

Answer:

.018, 1.8, 18, 18

Step-by-step explanation:

ascending means going from smallest to largest, so you order the numbers from smallest to largest

Answer:

018, 1.8, 18, 18

Step-by-step explanation:

The Garcia family wants to paint their house. They have found a painter who will pain
their house for $25 per hour, plus the cost of the paint. They need 10 cans of paint whic
cost $15 per can. Write an equation which can be used to find c, the cost of painting the
house in terms of h, the amount of hours the painter paints?
AC = 25h +150
e c = 25h +15
C<= 150h + 25
D C = 25h +10

Answers

Answer:

If the painter will paint for $25 per hour, then the amount of dollars for h number of hours is $25h , if the cost of paint is $15 per can, 10 cans will be $150. The cost C of painting the house is

C= 25h +150

The amount of hours the painter paints is make h the subject of the formula

h= (C - 150)/25

Final answer:

The equation to find the cost of painting the house in terms of the hours worked by the painter is C = 25h + 150

Explanation:

The equation that can be used to find the cost of painting the house in terms of the amount of hours the painter paints is C = 25h + 150. This equation represents the cost of the labor ($25 per hour) plus the cost of the paint (10 cans at $15 per can, which equals $150). The variable h represents the number of hours the painter works.

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A house is worth 125,000 when it is 2 years old and 135,150 when it is 7 years old. According to this model, how much will the house be worth when it is 16 years old

Answers

Final answer:

The house will be worth $153,420 when it is 16 years old, calculated by finding the annual increase in value from the given data and projecting this increase over the relevant time period.

Explanation:

To calculate the worth of the house when it is 16 years old, we need to establish the rate at which the house's value is increasing over time, based on the information given for its value at 2 years and at 7 years. The house is valued at $125,000 when it is 2 years old and $135,150 when it is 7 years old, showing an increase of $10,150 over 5 years.

First, we find the annual increase in value by dividing the total increase by the number of years:

Annual increase = $10,150 / 5 = $2,030.

Next, we predict the value when the house is 16 years old by multiplying the annual increase by the number of years from the starting point (2 years old) to 16 years old:

14 years (from year 2 to year 16) × $2,030 annual increase = $28,420 increase since year 2.

Finally, we add this increase to the original value at year 2:

Projected Value at Year 16 = $125,000 + $28,420 = $153,420.

Hence, according to the model, the house will be worth $153,420 when it is 16 years old.

Let g(x)=9x−10 and evaluate g(x+h)−g(x)/h

Answers

Answer:

[tex]\frac{g(x+h)-g(x)}{h}=9[/tex]

Step-by-step explanation:

we have

[tex]g(x)=9x-10[/tex]

To find out g(x+h) substitute the variable x by the variable (x+h) in the function g(x)

so

[tex]g(x+h)=9(x+h)-10[/tex]

[tex]g(x+h)=9x+9h-10[/tex]

Evaluate

[tex]\frac{g(x+h)-g(x)}{h}[/tex]

we have

[tex]g(x+h)=9x+9h-10[/tex]

[tex]g(x)=9x-10[/tex]

substitute in the expression

[tex]\frac{9x+9h-10-(9x-10)}{h}[/tex]

[tex]\frac{9x+9h-10-9x+10)}{h}[/tex]

[tex]\frac{9h}{h}[/tex]

[tex]9[/tex]

therefore

[tex]\frac{g(x+h)-g(x)}{h}=9[/tex]

What is the simplified form for (2x^8)*3y^9*2x^4=

Answers

Answer:

12x12y9

Step-by-step explanation:

What’s the fraction of 65% in its simplest form

Answers

Answer:

13/20

Step-by-step explanation:

65%=65/100

65/100=13/20

13/20............................

Find an equation of the line passing through the point ( 6 , − 4 ) (6,-4) and perpendicular to 9 x − 3 y = 9 9x-3y=9 . Write your answer in slope-intercept form.

Answers

Answer:

[tex]y =-\frac{1}{3}-2[/tex]

Step-by-step explanation:

We are given;

A point (6, -4)An equation of a line, 9x - 3y = 9

We are required to determine the equation a line passing through a point (6, -4) and perpendicular to the given line;

To answer the question we need to get the gradient of the given line first.We write the equation 9x - 3y = 9  in the form of y = mx + c, where m is the slope;That is;

y = 3x -3

Thus, the slope of the line is 3

But; m₁ × m₂ = -1 (For perpendicular lines)

Therefore;

m₂ = -1 ÷ 3

    = -1/3

Therefore, the slope of the line in question is -1/3 and the line passes through (6, -4).

To get its equation, we get another point (x, y)

Then;

[tex]\frac{y+4}{x-6}=\frac{-1}{3}[/tex]

Thus;

[tex]3(y+4) = -1(x-6)\\3y + 12 = -x+6[/tex]

In the form of slope-intercept, the equation will be;

[tex]3y = -x - 6\\y =-\frac{1}{3}-2[/tex]

Thus, the equation of the line is;

[tex]y =-\frac{1}{3}-2[/tex]

what is 0.15151515151 as a fraction

Answers

Final answer:

The decimal 0.15151515151 can be written as the simplified fraction 5/33.

Explanation:

To express the decimal number 0.15151515151 as a fraction, we can observe the repeating pattern. The 15 sequence repeats indefinitely, so we can represent it as 15/99. Finally, we simplify the fraction by dividing both the numerator and denominator by their greatest common divisor, which in this case is 3. Therefore, the decimal 0.15151515151 can be written as the simplified fraction 5/33.

Recognizing the recurring pattern in the decimal as 0.15(15), we express it as a fraction, obtaining 15/99. Simplifying the fraction by dividing both numerator and denominator by their greatest common divisor, which is 3, yields the final result: 5/33. This process highlights the conversion of repeating decimals to fractions.


352.83 in expanded notation

Answers

We can extend 352.83 and write as  (3 x 100) + (5 x 10) + (2 x 1) + (8/10) + (3/100)

Step-by-step explanation:

Considering the given value 352.83 we can expand that step by step as,

(3 x 100) which will give us a value of 300.

Now adding the multiplied answer of (5 x 10) will give us 350.

Next we can also add the multiplied answer of (2 x 1 ) which will further give us 352.

Now adding the divided answer of (8/10) we will get 352.08

Finally adding the divided answer of (3/100) we will get the exact value of 352.83 as mentioned above.

The expanded notation for the number [tex]352.83[/tex] is [tex](3\times 100)+(5\times 10)+(2\times 1)+(8\times \dfrac{1}{10})+(3\times \dfrac{1}{100})[/tex]

A number can always be written in the expanded notation by multiplying the face value with the face notation.

Here, [tex]3[/tex] is at the [tex]100th[/tex] place of the number so, it can be written as [tex]3\times 100[/tex].

Similarly, the digits which are located after the decimal point can be expanded by dividing the face value of the number by [tex]10[/tex] raised to the power of face notation.

Here, [tex]8[/tex] is present just after the decimal point and so, its expanded form is [tex]8\times \dfrac{1}{10}[/tex].

Hence, the expanded notation of  [tex]352.83[/tex] is [tex](3\times 100)+(5\times 10)+(2\times 1)+(8\times \dfrac{1}{10})+(3\times \dfrac{1}{100})[/tex].

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Mr. Pham has 410,000 in a retirement account that earns 3.85% simple interest each year. Find the amount earned each year by this investment

Answers

[tex]\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$410000\\ r=rate\to 3.85\%\to \frac{3.85}{100}\dotfill &0.0385\\ t=years\dotfill &1 \end{cases} \\\\\\ I=(410000)(0.0385)(1)\implies I=15785[/tex]

The Carter family just left the local pet store with Rex, their new family dog. The pet store owner told the Carter family that for the next 6 months, Rex would grow at an average rate of 9 pounds per month. Currently, Rex is 2 months old and weighs 6 pounds.

Age, in months 2 3 4 5 6 7 8
Weight, in pounds 6
Part A: Complete the given table that represents Rex’s current weight, in pounds, as a function of his age, in months

Part B: Graph the data in the table from Part A. Be sure to label the graph and all data points.
Part C: Create a linear model that represents the Rex’s current weight, in pounds, as a function of his age, in months.

Part D: If Rex continues to grow at the rate of 9 pounds per month beyond the expected six months, how much will Rex weight by the time he is one year old?

Answers

Answer:

A.)

In 2 months, Rex is 6 pounds and in 8 months he's 9lbs (from 2 to 8 is 6 months). So I inferred that to get to 9lbs from 6lbs is to go 0.5 pounds more each month.

B.)

2 = 6

3 = 6.5

4 = 7

5 = 7.5

6 = 8

7 = 8.5

8 = 9

C.) I don't think I can create a linear model here. So I don't think its nessesary.

D.)

If Rex were to grow over the expected 6 months, it would be 45.

Can someone help me with the problem in the image

Answers

Answer:

PT=57

Step-by-step explanation:

If PT=7x+8 and TQ=9x-6 qnd we have that T is the midpoint of PQ.

Since T is the midpoint of PQ, [tex]PT=TQ[/tex]

We substitute into the equation to get:

[tex]7x+8=9x-6[/tex]

Group the similar terms to get:

[tex]8+6=9x-7x[/tex]

We simplify now to get:

[tex]14=2x[/tex]

Divide through by 2 to get:

[tex]x=7[/tex]

PT=7*7+8=49+8=57

The high temperature in Fairbanks, Alaska was 12.2 degrees, then that night it fell 48.4 degrees. The next morning, it rose 17.1 degrees. What was the temperature in the morning?

Answers

Answer:

The temperature next morning was - 19.1 degrees

Step-by-step explanation:

High temperature in Fairbanks, Alaska = 12.2 degrees

Temperature that night = 12.2 - 48.4

Temperature that night = -36.2 degrees

Temperature next morning = -36.2 + 17.1

Temperature next morning = -19.1 degrees

The temperature next morning was - 19.1 degrees

Tina has 18 sunflower seeds in 15 Daisy seeds she wants to distribute them equally into pots then planting them with no seeds left over what is the greatest number of pots Tina can use

Answers

Answer:11

Step-by-step explanation:

Add 18 and 15 then find the GCF

The maximum number of pots she can make is 15.

What is subtraction?

The process of subtracting one number from another is known as subtraction.

Given that, Tina has 18 sunflower seeds and 15 daisy seeds.

Since Tina wants to distribute the sunflower seeds and daisy seeds equally in each pot, each pot must contain at least one daisy seed and one sunflower seed.

Therefore, if, she has 1 daisy seed and 1 sunflower seed in each pot, then she can make 15 pots, as there are only 15 daisy seeds.

Now, there are only 3 sunflower seeds left but she cannot use them to make a pot as there are no daisy seeds.

Hence, the maximum number of pots she can make is 15.

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$12 for 6 bagels; $9 for 24 bagels.

Answers

Answer:

What is the question that you are asking?

Step-by-step explanation:

How can we re-write the expression below into “friendlier” terms? 6 ∙ 29
options:

6 ∙ (30 - 1)

6 ∙ (16 + 13)

6 ∙ (19 + 10)

6 ∙ (21 + 8)

Answers

Option A: 6 ∙ (30 - 1)

Solution:

Given expression is 6 · 29.

Friendlier term means a number can be expressed using other numbers which are closest to the number.

Option A: 6 ∙ (30 - 1)

30 is closest to 29, so which is the friendlier term to 29.

6 · 29 =  6 ∙ (30 - 1)

Option B: 6 ∙ (16 + 13)

16 and 13 are not closest to 29, which are not the friendlier terms.

Option C: 6 ∙ (19 + 10)

19 and 10 are not closest to 29, which are not the friendlier terms.

Option D: 6 ∙ (21 + 8)

21 and 8 are not closest to 29, which are not the friendlier terms.

Hence Option A: 6 ∙ (30 - 1) is the correct answer.

#13 Kayla is 4 years
younger than her sister.
Write an algebraic
expression that represents
the situation.

Answers

Step-by-step explanation:

Let us suppose that her sister age is x,

we have given that Kayla is 4 years younger than her sister .

this the age of Kayla would be 4 less than x,

So the algebraic expressions is :

x - 4. ans.
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