Help me please with this

Answer:

1. m=2/7

2. there are 25 students in her class

3. x=16

4. each notebook cost $2

Step-by-step explanation:

Answer:

  1. (-∞, ∞), [-4, ∞), (2, ∞), (-∞, 2), (-∞, 0) ∪ (4, ∞), (0, 4), DNE, -4, 2

  2. y = -|x -4| -2

Step-by-step explanation:

1.

a. the domain is the horizontal extent, (-∞, ∞)

b. the range is the vertical extent, [-4, ∞)

c. the function is increasing where it goes up to the right, (2, ∞)

d. the function is decreasing where it goes down to the right, (-∞, 2)

e. the function is positive where it is above the x-axis, (-∞, 0) ∪ (4, ∞)

f. the function is negative where it is below the x-axis, (0, 4)

g. the function extends to ∞, so has no maximum value

h. the vertex is the low point, or minimum value, -4

i. the function increases from -4 to 0 on the interval [2, 4] so has an average rate of change of (0 -(-4))/(4 -2) = 4/2 = 2

__

2. Reflection across the x-axis negates every y-value. Multiply the given function by -1:

  y = -|x-4| -2

Answer:

27,329

Step-by-step explanation:

Answer:

27329

Step-by-step explanation:

I substracted :D

Answer:

Steps have justified that;

y = $250 + $340x

Step-by-step explanation:

We are told Lewis is saving for a down payment of $8,750 on a house.

Now, the initial amount of money he has saved is $250, while the amount of money he plans on saving every month is $340.

Thus, if x represents the number of months and y represents the total amount of savings. It means that;

For x number of months, he saves; $340x

Now, the initial amount he saved is $250.

This means that the total amount he would have saved after x number of months is;

Total amount saved = Initial savings + Amount saved monthly after x number of months.

Now, total amount saved is denoted as y as given in the question, then we have;

y = $250 + $340x

Answer:

subtraction

y-250=340x

division

y-340=250x

Step-by-step explanation:

Answer:

a. The number of people that receive the text in the fourth round are 10³ people

b. The total number of people that receive the text are 1.1111 × 10⁴ people

Step-by-step explanation:

a. The given information are;

The number of people the text is sent to in the first round = 1

In the second round, the number of people the text is sent to by people in the first round = 10

In the third round, the number people the text is sent to by the 10 people in the second round = 10 × 10 = 100 people = 10² people

In the fourth round, the number of people the text is sent to by the people in the third round = 100 × 10 = 1000 people = 10³ people

The number of people that receive the text in the fourth round = 10³ people

b. In the fifth round, the number of people, the people in the fourth round send the text to = 1000 × 10 = 10000 people = 10⁴ people

The total number of people that receive the text = 1 + 10 + 10² + 10³ + 10⁴ people =  11111 people = 1.1111 × 10⁴ people

Answer:

720 possible arrangements.

Step-by-step explanation:

The possible arrangement of the cars, given that the three cars of the same color are kept together is 4320.

The combination is a way of selecting items from a collection where the order of selection does not matter.

We have,

Number of cars = 8

Number of cars that are the same in color = 3

Cars that are the same in color can be arranged = 3!

There are 8 cars such that,

1 2 3 4 5 6 7 8

Three cars of the same color are taken out and we have,

1  2  3  4  5

We see that there are six spaces = 6!

where we can put the same color cars together so,

The possible arrangement of the cars, given that the three cars of the same color are kept together:

= 3! x 6!

= 3 x 2 x 1  x 6 x 5 x 4 x 3 x 2 x 1

= 4320

Thus,

The possible arrangement of the cars, given that the three cars of the same color are kept together is 4320.

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Answer:

F^3-3................

Answer:

A. by the definition of perpendicular.

Explanation:

Indeed, in geometry, for lines to be termed as been perpendicular, it means that two lines met at a right angle (90 degrees).

From the attached image we could see that Segment PR is perpendicular to segment QS as it touches or meets with segment QS which follows the definition of perpendicular. Also, Angle QRP is a right angle because it is exactly 90 degrees.

Answer:

it's true

Step-by-step explanation:

the answer is true check the pic above for explanation

Answer:

Its 0.00031

Step-by-step explanation:

You just move your decimal the number of exponent. In your case -4 so you would move it to the left because it's a negative and move it 4 spaces.

Hope this helps!

Answer:

2

Step-by-step explanation:

Answer:

2 x 2 = 4 + 4 = 8

the number is 2

Answer:

h=3v/b

Step-by-step explanation:

Answer:

w = 0.5 because if you mesure it with a ruler you’d get that answer.

The area of the mat with the painting will be equal to (W+10)(W+16) square inches.

The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the rectangle in a two-dimensional plane is called the area of the rectangle.

Given that the sides of the rectangle are 16 inches and 10 inches. The extra width of the mat is w inch on each side.

The total sides of the total painting and the mat will be,

Length = L + W=16 +W

Width = 10 + W= 10 +W

The area will be calculated as,

A = ( 16 + W ) ( 10 + W )

Therefore, the area of the mat with the painting will be equal to (W+10)(W+16) square inches.

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Answer:

9.15x10^6

Step-by-step explanation:

Step-by-step explanation:

9, 150, 000 = 9.15*10^6

Answer:

I need points im so sorry

Step-by-step explanation:

dhduehhshxjs

The distance traveled after 4 hours is 260 miles.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 4 - 9 = 9  is an equation.

We have,

Distance ∝ Time

Distance = K x Time

Now,

390 = 6K

K = 390/6

K = 65

Now,

Distance = 65 x 4

Distance = 260 miles

Thus,

After 4 hours the distance traveled is 260 miles.

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Answer:

The answer would be 17/1000

Step-by-step explanation:

Answer:0.017 as a fraction would be 17/1000

Step-by-step explanation:

Answer:$11.3 per cooler

Step-by-step explanation:

Answer:

about 11.30

Step-by-step explanation:

If you divide 56.50 by the unit , you will end with the unit price , which is about 11.30 ish

Answer:

The answer to this is:

600 ( 1 + 3 x 0.02)

Answer:

-10* F

Step-by-step explanation:

What confuses me is that the answers you have provided aren't correct, when I made a number line starting at 0 and ending at -23* F and I had counted three degrees for each hour I got -10* F.

   2am     3am      4am       5am

0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23

2am is at -1* F, 3am is at -4* F, 4am is at -7* F, and 5am is at -10* F.

This is over the course of three hours after 2am so unless I got this wrong you might want to ask your teacher.

Answer: -10 degrees

None of those 4 choices are correct

Answer:

Step-by-step explanation:

Let the area of the rectangle be Length × width

LW = 8000

If the diagonal is 10feer greater than one of its length then:

D = 10+L

Diagonal is represented using the Pythagoras theorem as shown:

D² = L²+W²

(10+L)²= L²+W²

100+20L +L² = L²+W²

From LW = 8000

W = 8000/L

100 + 20L = (8000/L)²

100 +20L = 64,000,000/L²

Cross multiply

100L² + 20L³ = 64,000,000

2L³+10L² = 6,400,000

L³+5L² = 3200000

L³+5L² -3200000 = 0

Answer:

55 ft by 146 ft

Step-by-step explanation:

Given the following :

Area of rectangle = 8000 ft^2

Area of rectangle = length(L) * width(W)

Let length of a side = x

Length of side 2 = 8000 / x

Diagonal = 10 feet longer than one side = (x + 10)

The diagonal is the hypotenus = (x + 10)²:

Hyp² = (8000/x)² + x²

(x + 10)² = (8000/x)² + x²

x² + 20x + 100 = 64,000,000 / x² + x²

20x + 100 = 64,000,000 / x²

(20x + 100) * x² = 64,000,000

20x³ + 100x² - 64,000,000 = 0

x³ + 5x² - 3200000 = 0

Using calculator

x = 145. 71 = 146 ft

8000 / x

8000/145.71

= 54.9 ft

= 55ft

55ft by 146 ft

Answer 63

Step-by-step explanation:

it will take around 63 months

Answer:

1. 6890

2. 6790

3. 6670

4. 6560

5. 6450

Step-by-step explanation:

Answer:

I choose my choice as A

Step-by-step explanation:

Two times the sum of (x+7) x plus seven plus ten (+10)

Answer:

-26.

Step-by-step explanation:

Substitute the numbers and letters like this

-6 + (-5 x 4)

Which would evaluate to -6 + -20

And since it's the same sign, you can make it -6 - 20.

That equals -26.

Answer:

true

Step-by-step explanation:

Answer:

in finding the inverse of an equation, you just switch x and y, so f(x)=y becomes f(y)=x