please help stuck on this question

Answer:

A = 14

B = 14

Step-by-step explanation:

7(-2x+2)

-14x + 14

A = 14

B = 14

A lake near the Arctic Circle is covered by a 2-meter-thick sheet of ice during the cold winter months. When spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. After 3 weeks, the sheet is only 1.25 meters thick. Let y represent the ice sheet's thickness ( in meters) after x weeks. Complete the equation for the relationship between the thickness and number of weeks.

Answer:

y = 2 - 0.25x

Step-by-step explanation:

From the question, the initial thickness of the ice sheet = 2 meters,

After 3 weeks, the thickness of ice sheet reduced to 1.25 meters

Hence, the difference in the thickness in 3 weeks is calculated as:

2m - 1.25m = 0.75m

The amount of changes that occurred in 3 weeks is given as:

= 0.75/3 = 0.25 meters,

We are told that, the ice is melting with the constant rate.

Therefore, the equation for the relationship between the thickness and number of weeks is given as:

y = 2 - 0.25x

Answer: the answer above is correct

Step-by-step explanation:

Answer:

[tex]\frac{4}{3}[/tex]

Step-by-step explanation:

The negative cancels out each other

Step-by-step explanation:

[tex]( {7x}^{2} - 4) - ( {3x}^{2} - 5x + 1)[/tex]

[tex] {7x}^{2} - 4 - {x}^{2} + 5x - 1[/tex]

[tex] {4x}^{2} + 5x - 5[/tex]

Answer:

x+4+2x = 20+5x-32

Step-by-step explanation:

x+4+2x

= 3x + 4

20+5x-32

= 20-32+5x

= 5x-12

Finding the value of X

3x+4 = 5x-12

= 4+12 = 5x-3x

= 16 = 2x

= 16/2 = X

= 8 = X

By putting the value of X in the equation

(3×8)+4

= 24 +4

= 28

(5×8)-12

= 40-12

28

28 = 28

so the X+4+2x < 20+5x-32 is wrong

Answer:

Harper is 200 yards away from her home if the map shows 3 inches

Step-by-step explanation:

50 yards = 3/4 inch

3 inches = 3/1

3/1 x 4/4 = 12/4

12/4 = 3 inches

50 x 4 = 200

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Answer:

This has infinite solutions.

Step-by-step explanation:

Key skills needed are: One variable equations, Algebra, Adding/Subtracting Like Terms

1) We first start with the equation: 8 + 2 (x - 6 ) = -2 +2x - 2​

2) We first need to use distribution property for the parentheses.

We need to distribute the 2 to the x and the -6.

3) This would be 8 + 2x - 12 = -2 +2x - 2

4) The next thing to do is combine like terms.

Like terms are terms with the same variable, or no variable at all. 8 and 6 would be like terms, and 2x and 4x would be like terms. 2x^2 and 4x would not be like terms as one has x^2 and the other has only x.

3) Now you know what like terms are, you can implement this into the problem --> Combine the 8 and 12 on the left side  + Combine the -2 and -2 on the right side ----> 2x-4 = 2x-4

4) Since both sides have the same exact thing (both sides have 2x-4) this equation has infinite solutions.

Hope you understood and have a nice day!! :D

Answer: 0.51

Step-by-step explanation:

We know that:

For a random selection, we have a probability of 0.42 where the house has both services and a probability of 0.82 that the house has only internet service.

Let's suppose that the percentage of houses the houses with internet service (the 82% of the total) that also have a home phone is X

Then we must have that, (X/100%) times the 0.82, must be equal to 0.42

(X/100%)*0.82 = 0.42

X = (0.42/0.82)*100% = 51%

This means that 51% of the houses with internet service, also have a home phone.

Then the probability that a house has a home phone given that it has internet service, is equal to:

51%/100% = 0.51

The probability is 0.51

Answer: A and C

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

First your going to need to find 6% of 450 which is 27

then you need to find 6% of 250 which is 15 and you have two 250's so you have two 15's

next add them all up and you got yourself 57

btw sorry my explanation sucks

Answer:

57$

Step-by-step explanation:

450 + 500 = 950 and 6% of 950 is 57

Answer: 30 + 10.50h

Step-by-step explanation:

From the question, we are informed that Pat earns $30.00 for traveling to the homes plus $10.50 for each hour of tutoring.

The linear equation that models their total earnings for traveling and tutoring for a given number of hours would be written as:

= $30 + $10.50h

where h represents the number of hours for tutoring used.

For example, if 2 hours if tutoring was used, the total amount earned would be:

= 30 + 10.50h

= 30 + 10.50(2)

= 30 + 21

= $51

Step-by-step explanation:

Base of smaller pink triangle

= (3m + 6m) - 7m = 2m.

Area of smaller pink triangle

= 0.5(2m)(5m) = 5m².

Area of bigger pink triangle

= 0.5(6m)(5m) = 15m².

Hence total area shaded = 5m² + 15m² = 20m².

Answer:

5300.

If you're rounding to the nearest hundred you look at the tens place. If its 5 or over you go up. So in this case we'll raise the 2 to a 5 because 6 is above 5.

Answer:

97 words in 1 minute

Step-by-step explanation:

A unit measure is so many somethings done usually per unit time. Examples

3 crackers and 1 apple is not. For ever apple, she ate 3 crackers would be

1 cookie is not. It is not per anything.

Driving 16 miles is not. Again, it is not per anything.

The answer is 97 words in 1 minute.

Answer:

1=(4/4)*(4/4)

2=(4/4)+(4/4)

3 = (4+4+4)/4

4 = 4 + (4-4)*4

20=4 × (4/4 + 4)

20=4 × (4/4 - (-4))

[tex]20 = \sqrt{4} +\sqrt{4} + (4x4)[/tex]

[tex]20 = \sqrt{4} +\sqrt{4} + (-4 x -4)[/tex]

Step-by-step explanation:

The x is a multiplication sign not a variable, I hope this right.  Good luck, I am so tired.

Answer:

tally mark also called hash marks and they are a unary numeral system

Answer:

$5

Step-by-step explanation:

The opposite of multiplication is division.

$15/Raking = 3 times more pay than mowing the lawn.

Divide $15/Raking by 3 and you'll get the pay for mowing the lawn.

15/3 = 5

Answer:

5

Step-by-step explanation:

Answer:

$27.60

Step-by-step explanation:

First, we need to find how much the tip is:

we can convert 15% directly to a decimal:

15% = 0.15  

Then we find :

15% of 24 = 0.15 x 24 = 3.59999999999999

3.599999999999999 to the nearest cent is 3.60

Then we add the tip to the original bill:

3.60 + 24 = 27.60

So the total cost of the lunch is $27.60

Answer:

50 : 25 = 75 : 37.50

Step-by-step explanation:

If 50 apples cost $25, that means 2 apples cost $1.

75 apples cost 37.5, or $37.50

Answer:

B and C are the correct options

Step-by-step explanation:

The parent function here will be ;

f(x) = x^4

Multiplying x^4 by 2 means that we are having a vertical stretching

What this means is that the leading coefficient 2 stretches the graph vertically by 2 units

Subtracting -3 means that we are translating the graph down by a value of 3 units

So the correct options are;

B and C

Answer:

f(2) = 9

g(1) = -3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

f(x) = 4x + 1

g(x) = x² - 4

f(2) is x= 2

g(1) is x = 1

Step 2: Evaluate

f(2)

g(1)

Answer:

= -8

Step-by-step explanation:

plug in 3 for b

10 - 2 (3)^2

10 -2 (9)

10 - 18

-8

Answer: -8

Step-by-step explanation: just substitute the 3 in for b

Answer:

0.1221

Step-by-step explanation:

uhm..

what expressions?

Answer:

D

Step-by-step explanation:

1.44 + 1.30 = 2.74

Answer: 2.74 meters

Step-by-step explanation:

1 3/10 meters can be converted into 1.30 meters

1.30+1.44=2.74

Answer:

63

Step-by-step explanation:

Ty worked 4 hours ad earned $28. This means that he earned $7 per hour. So, 7 times 9 is equal to 63. Which means that Ty will earns $63 in 9 hours.