Can someone explain how my teacher did this? I don't understand it at all.​

Can Someone Explain How My Teacher Did This? I Don't Understand It At All.

Answers

Answer 1
So how you get to the numbers inside the X you use the numbers from the problem.

To get the top number in the X you do 7x^2*-20 that’s how the -140x^2 came

Than the bottom is just the middle number which is -31x.

For te side numbers they have to be something when multiplied together you get the top number but also when you add them together you get the bottom. And -35x*4x gives you -140x^2. And -35x+4x gives you -31x.


Then for the box it looks like she put the numbers/letter you multiply to be able to get the answers. 7x*x. Gives you 7x^2. And 7x*-5 gives you -35x. So on...

Related Questions

given the functions f(x)=7x-2 amd g(x)=3x+6, find the value of x for which F(x)=g(x)

Answers

Answer:

Step-by-step explanation:

Hello,

f(x)=g(x)

<=> 7x-2=3x+6

<=> 7x-3x=6+2

<=> 4x=8

<=> x = 2

thanks

7x-2 = 3x+6
4x = 8
x = 2
When x=2 f(x)=g(x)
Check:
f(2) = 7(2)-2 = 14-2 = 12
g(2) = 3(2)+6 = 6+6 = 12
12 = 12 :. f(2) = g(2)

the length of a rectangle is five times the width. if the area of the rectangle is 125 square inches, find the length and width​

Answers

Length: 25
Width: 5
25 divided by 5=5
25x5=125

The smallest number that must be added to 1300 to make it a perfect cube is
a. 42
b. 36
c. 25
d. 31

Answers

Answer:

d. 31.

Step-by-step explanation:

11^3 = 1331

31.

Using each of the digits 1 to 9 once and only once form two whole numbers one of which is double the other

Answers

answer
9,327 and 18,654

Problem 5 Answer Choices (SELECT ALL THAT APPLY)
1
Problem #5
Select all of the numbers that
David could multiply by 300 to
get a product less than 300.

Answers

Answer:

any number less than one multiplied by 300 would be less than 300


Find the solution set to this inequality:
6m+2<5m- 4
O im m: 6
0 mm 2
(
mm2)
mm 6

Answers

Answer:

vruu

Step-by-step explanation:

skvnrwniohwrigjqepvpoqepmveppiehpihuorhg8hginvknkcmksmlkqslqbyftdrses6duguhojcfxzwexyvyih8ttde5setvjmpokuigcfxdetguinjnh fxtrfyhbh c

[tex]\int\limits^a_b {x} \, dx \int\limits^a_b {x} \, dx x^{2} \frac{x}{y} \pi \int\limits^a_b {x} \, dx \sqrt{x} \frac{x}{y} \frac{x}{y} x^{2} x^{2}[/tex]

A lemon aid stand sells 14 gallons of lemon aid in 3 hours how many halls can they expect to sell after three, eight hour days?

Answers

Answer:

112 gallons

Step-by-step explanation:

Step 1:

3 × 8        Equation for finding how many hours in the 3 days

Step 2:

24 hours    Multiply

Step 3:

14 ÷ 3       Equation to find how many gallons per hour

Step 4:

4.66666666667    Divide

Step 5:

4.66666666667 × 24      Equation

Answer:

112     Multiply

Hope This Helps :)

rewrite the expression in the form y^n
(y^4)^2

Answers

Answer:

the answer is y^8

Step-by-step explanation:

(y^m)^n= y^mn

(y^4)^2= y^4x2= y^8

A smokejumper jumps from a plane that is 1900 ft above the ground. The function h=-16^2+1900 gives the​ jumper's height h in feet during the free fall at t seconds.
a. How long is the jumper in free fall if the parachute opens at 1000​ ft?
b. How long is the jumper in free fall if the parachute opens at 950 ​ft?
c. What is a reasonable domain and range for the function​ h?


PLZZZ ANSWER URGENT

Answers

Answer:

c

Step-by-step explanation:

hope that helps

pls help i need this done as quick as possible

Answers

Answer:

Infinite Solutions.

Step-by-step explanation:

[tex]m+7=3+m+4[/tex]

Subtract m from both sides:

[tex]m+7-m=3+m+4-m[/tex]

[tex]7=3+4[/tex]

[tex]7=7[/tex]

Both sides are equal.

This means that the value of m does not affect the end result of 7 = 7, which is true. Thus, there are infinite solutions as any value of m will still make the equation true.

Answer:

Infinite Solutions

Step-by-step explanation:

Hope this will help

What is the solution set for the exponential inequality (1/2)^2x+1<4
A.(0, 4)
B.(0, ∞)
C.{-3/2,4}
xxxxD.{-3/2,infinity)

It's D

Answers

Answer:

Answer is choice D.   [ -3/2, ∞)

Step-by-step explanation:

correct on edg

The interval notation for the given exponential inequality is (-3/2, ∞).

The exponential inequality is [tex](\frac{1}{2} )^{2x}+1 < 4[/tex].

What is an exponential inequality?

Exponential inequalities are inequalities in which one (or both) sides involve a variable exponent. They are useful in situations involving repeated multiplication, especially when being compared to a constant value, such as in the case of interest.

Now, the given exponential inequality can be solved as follows:

[tex](\frac{1}{2} )^{2x}+1 < 4[/tex]

⇒ [tex](\frac{1}{2} )^{2x} < 3[/tex]

⇒ [tex]\frac{1}{2^{2x} } < 3[/tex]

Multiply [tex]2^{2x}[/tex] on both the sides of the inequality.

That is [tex]\frac{1}{2^{2x} } .2^{2x} } < 3.2^{2x} }[/tex]

⇒ [tex]1 < 3.2^{2x} }[/tex]

Solve for x

[tex]x=\frac{ln \frac{1}{3} }{2 ln 2}[/tex]

The solution consists of all of the true intervals.

[tex]x > \frac{ln \frac{1}{3} }{2 ln 2}[/tex]

Interval Notation: (-3/2, ∞)

Therefore, the interval notation for the given exponential inequality is (-3/2, ∞).

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f(x) = 14 – 0.5x f(30)=​

Answers

Maybe -1 idk for sure tho

Step-by-step explanation:

Answer:

30f - 0.5x + 14 fx   i think thats im only in 8th grade

Step-by-step explanation:

Which statement accurately describes the Internet? The Internet was introduced and first used by consumers during the 1980s. The Internet was first used by astronauts on the International Space Station. The Internet was created by the US Department of Defense for military purposes. The Internet has primarily affected entertainment, rather than politics or the economy.

Answers

The statement that accurately describes the internet is that it was created by the US Department of Defense for military purposes.

What is the internet?

It is a complex massive network that connects devices all around the world, this includes cellphones, computers, tablets. etc.

How did the internet start?

The first official project that developed this network was the ARPA project or Advanced Research Project Agency. This project was developed by the Department of Defense in the United States and the purpose was to create a network that could be used as part of military strategies.

Based on this, the true statement is that the internet was created for military purposes by the Defense Department.

Learn more about internet in: https://brainly.com/question/18543195

Answer:

Sorry I'm late to answer, but the answer is C.

Hope this helps!

Question 3
10 pts
A line segment has a length of 10 units. The line segment undergoes a Reflection over the line y=-2.
The length of the image will be
the same as
Mthe length of the pre-image because
(Select)
V
Reflections are
motions.
Question 4
10 pts
Triangle POR is rotated on the coordinate plane to obtain triangle PQR

Answers

Answer:

add a picture?

Step-by-step explanation:

The term test grades for an introductory calculus class was aggregated into
intervals of 10% to construct a relative frequency distribution. Suppose we
know the mean is 56% and the median is 40%. What would be true about the
center and the spread?​

Answers

Answer:

its the same

Step-by-step explanation:

you read

!! PLEASE HELP !!
What is the expression in radical form?
(3p^3q)3/4

Answers

Answer:

A

Step-by-step explanation:

Recall that if we are given fractional exponents, we can use the following property:

[tex]\displaystyle x^{ {}^{a}\!/\! {}_{b}} = \sqrt[b]{x^a}[/tex]

We are given the expression:

[tex]\displaystyle (3p^3q)^{ {}^{3}\!/\! {}_{4} }[/tex]

Use the above property, this yields:

[tex]=\sqrt[4]{(3p^3q)^3}[/tex]

Using the power of a power property, we can simplify this to:

[tex]=\sqrt[4]{(3^3)(p^3)^3(q)^3}[/tex]

Simplify:

[tex]=\sqrt[4]{27p^9q^3}[/tex]

In conclusion, our answer is A.

Suppose you are interested in how participants behave in different color conditions. You select 30 participants and assign them to one of three rooms. The rooms differ only with respect to the color of the walls. One room is white, one is pale blue, and a third is bright red. Each participant is served a meal of a hamburger and french fries, and you then measure how long it takes them to finish eating. What would be the independent variable in this study

Answers

The answer is the color of the room

Explanation:

In this study, the color of the room is the factor or variable that is modified by the researcher. Also, it is expected the color of the room affects participants' behavior but not the opposite. This shows the color of the room is an independent variable because this factor is not affected by other variables, and it modifies the dependent variable (behavior). Moreover, in studies, the independent variable is always the one that is changed by the researcher.

There are 24 boys and 16 girls on a playground what is the ratio of boys to total number of children on the playground

Answers

Answer:

24:40 or 3:5

Step-by-step explanation:

24+16=40. 24:40 can be simplified to 3:5.

Hope this helped!

The ratio of boys to the total number of children on the playground if, There are 24 boys and 16 girls on a playground is 3 / 5.

What is ratio?

It is the comparison of one quantity with another. For example, if your weight is 30 kg and your father's weight is 90 kg, then the ratio of weight is 1:3. An ordered pair of numbers a and b, represented as a / b, is a ratio if b is not equal to 0. A proportion is an equation that sets two ratios at the same value.

Given:

There are 24 boys and 16 girls on the playground,

Calculate the total number of children as shown below,

The total number of children = 24 + 16 = 40

The ratio of boys to the total number of children is given as,

The ratio of boys to the total number of children = number of boys / total number of children,

The ratio of boys to the total number of children = 24  / 40

The ratio of boys to the total number of children = 3 / 5.

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1. Carol put 6 gallons of gas in her tank and spent $26.58.
Mark filled up at the same station and put 18 gallons of gas
into his tank. How much did Mark spend?

Answers

Answer:

$79.74

Step-by-step explanation:

[tex]\frac{6}{26.58} = \frac{18}{x} \\\\6x = 478.44\\x = 79.74[/tex]

6) A boat traveled 80 miles downstream and back. The trip downstream took 5 hours. The trip back took
10 hours. What is the speed of the boat in still water? What is the speed of the current?

Answers

Answer:

12 mph and 4 mph

Step-by-step explanation:

Let the speed of the boat = b and the speed of the current = c

Equations to reflect time, time = distance/speed:

Downstream80/(b + c)= 5 ⇒ b - c = 80/5 ⇒ b + c = 16Upstream80/(b - c) = 10 ⇒ b - c = 80/10 ⇒ b - c = 8

Sum of the 2 equations above

b + c  + b - c = 16 + 82b = 24b = 12c = 16 - 12 = 4

So the speed of the boat is 12 mph

The speed of the current is 4 mph

Find the area and the circumference of a circle with diameter 6 cm.
Use the value 3.14 for it, and do not round your answers. Be sure to include the correct units in your answers.

Answers

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

C≈18.85 cm

A≈28.27 [tex]cm^{2}[/tex]

The area of the circle is approximately 28.27 cm², and the circumference is approximately 18.85 cm.

We have,

Area of a circle: A = πr²

Circumference of a circle: C = 2πr

Radius (r) = Diameter / 2 = 6 cm / 2 = 3 cm

Area of the circle:

A = πr² = π(3 cm)² ≈ 28.27 cm²

Circumference of the circle:

C = 2πr = 2π(3 cm) ≈ 18.85 cm

Therefore,

The area of the circle is approximately 28.27 cm², and the circumference is approximately 18.85 cm.

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5/17 as a percentage

Answers

29.411764705882 % is the answer

Hello.

Divide the two numbers, then multiply by 100.

5/17 = 0.294

0.294 * 100 = 29.4

5/17 as a percentage is 29%

(in full, 29.411764%)

Use the distributive property to simplify each expression
(7+6w)6

Answers

42+36w

7 x 6 + 6w x 6

Multiply to get:

42+36w

Brainliest?

Answer:

42+ 36w

Step-by-step explanation:

You multiple all numbers in the parenthesis with the number directly outside of it. 6x6=36(w) and 7x6=42. You cant simplify any further.

Place each of the digits 1, 3, 5, and 6 in the blanks provided to create an expression whose value is 1/10

Answers

Answer:

[tex]\frac{1}{5}\times \frac{3}{6}=\frac{3}{30}[/tex]

Step-by-step explanation:

From the picture attached,

Multiplication of two fractions gives the result as [tex]\frac{1}{10}[/tex].

This shows that the denominator of the fractions when multiplied with each other results a number that will be the multiple of 10.

Therefore, from the given numbers,

5 × 6 = 30

Rest two numbers be placed as the numerator of the fractions.

[tex]\frac{1}{5}\times \frac{3}{6}=\frac{3}{30}[/tex]

         [tex]=\frac{1}{10}[/tex]

Therefore, [tex]\frac{1}{5}\times \frac{3}{6}=\frac{1}{10}[/tex] will be the answer.

You need a 55% alcohol solution. On hand, you have a 550 mL of a 95% alcohol mixture. How much pure water will you need to add to obtain the desired solution?​

Answers

Answer:

We need to add 400 ml of pure water to obtain the solution at 55%

Step-by-step explanation:

Concentration

The concentration of a solution measures the amount of solute that has been dissolved in a given amount of solution. The question states the alcohol is the solute and water is the solvent to produce the mix or solution.

The concentration can be calculated with the formula:

[tex]\displaystyle c=\frac{solute}{solute+solvent}*100\%[/tex]

Originally, the mixture was 95% concentrated.

Substituting in the formula:

[tex]\displaystyle 95\%=\frac{solute}{solute+solvent}*100\%[/tex]

We know there were 550 ml of solution (solute+solvent), thus

[tex]solution*0.95=solute=522.5\ ml[/tex]

Now we know there were 522.5 ml of alcohol.

We now need to add x ml of water to have a 55% concentrated solution. Recall that water is solvent, the solute keeps its original value, thus:

[tex]\displaystyle 55\%=\frac{solute}{550+x}*100\%[/tex]

Operating:

[tex]0.55(550+x)=522.5[/tex]

Dividing by 0.55

[tex]550+x=950[/tex]

Thus [tex]x=950-550=400[/tex]

We need to add 400 ml of pure water to obtain the solution at 55%

You need to arrange 10 of your favorite books on a small shelf. How many different ways can you arrange the books, assyming that the ordwr of the books make a differe

Answers

Answer:

You can arrange the books 3,628,800 different ways.

Step-by-step explanation:

You can imagine that the shelf has 10 "slots" where you can place a book. Each slot can take 1 of the 10 books. However, after you have placed 1 book, there are only 9 possible books to place. After 2 have been placed, there are only 8 possible.

Going left-to-right, the first slot has 10 available books.

Total combinations: 10

The 2nd slot has 9 available books.

Total combinations: 10 * 9

The 3rd slot has 8 available books.

Total combinations: 10 * 9 * 8

This continues for all 10 slots.

Eventually, for slot 10, there is only 1 book possible.

Total combinations: 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1

Multiply all numbers between 10 and 1 with each other is also known as "10 factorial" or "10!"

Thus, the total number of combinations is:

[tex]10! = 10*9*8*7*6*5*4*3*2*1 = 3628800[/tex]

Answer: You can arrange the books 3,628,800 different ways.

Cynthia orders 27 prints of a photograph she took . It costs her a total of $242.73 . How much does each print cost ?

Answers

Answer:

8.99

Step-by-step explanation:

Answer:

$8.99 for each print

Step-by-step explanation:

242.73 divided by 27 = 8.99

If 1 mile equals 5280 feet how many feet are in 7 miles 754 feet 1326 feet 3696 feet or 36,960 feet

Answers

Answer:

36,960 feet

Step-by-step explanation:

5280×7=36,960

Answer:

D: 36,960 feet

Step-by-step explanation:

Edge results

Is .111111111... a rational number? Yes or No?

Answers

Answer:

The answer is no this number is not rational.

Step-by-step explanation:

Because, To show that the rational numbers are dense:

It cannot be expressed as a fraction with integer values in the numerator and denominator. When an irrational number is expressed in decimal form, it goes on forever without repeating.

BRAINLIEST
I NEED HELP
SUPER HARD

Write a rule
for a nonlinear function such that y is negative when x = 1, positive when x=2,
negative when x=3, positive when x = 4, and so on.

Answers

Answer:

We know that a negative value is positive of all even exponents and negative for all odd exponents.

y=(-1)^x

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