Jacob attempted the third problem above but when checking his work he realized he made a mistake. Identify what Jacob’s mistake was in your own words, and explain what Jacob would need to do differently to avoid making that mistake in the future:
5(x+2)-7=3x+5
5x+2-7=3x+5
5x-5=3x+5
5x-5+5=3x+5+5
5x=3x+10
5x-3x=3x-3x+10
2x=10
x=5 5[(5)+2]-7=3(5)+5
5(7)-7=3(5)+5
35-7=15+5
28=20
What happened?

Answer:

1 and 1/8 of a batch

Step-by-step explanation:

First you multiply 1/2 by 4 and get for 8 and then you subtract 4/8 - 3/8 and you take the sum of that and add one hole

Answer: 4 x (8 + 5) = (4 x 8) + (4 x 5)

Step-by-step explanation:

multiply the 4 by what is in the ( )

4x8 = 32

4x5= 20

so it equals what is on the other side (in the blanks, you just plug in the 8 and 5)

so it would be

4 x (8 + 5) = (4 x 8) + (4 x 5)

Answer:

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

You have to do order of op

Answer:

1,000 sq ft

Step-by-step explanation:

Part A:

To find the total area of both rooms (length x width):

(x+4)(2x+6+x-4)

(x+4)(2x+2+x)

2x²+2x+x²+8x+8+4x

= 3x²+14x+8

Part B:

If the length of the game room = 12 ft, we can solve for x:

Game room = (x-4)=12; therefore x=16

Plug 16 in for x in the equation from Part A:

3x²+14x+8 becomes 3(16)²+14(16)+8

= 1,000 sq ft

Answer:

Step-by-step explanation:

130  17/1000

Answer:

1 = Yes

2 = No

3 = No

4 = Yes

5 = Yes

6 = Yes

7 = No

8 = No

9 = Yes

Answer:

5 or C

Step-by-step explanation:

when you plug in 5, you get -24 as the cost. Then you take that number with the amount of money you make selling 5 flowers and that would be $50 since they are $10/per bouquet. Then when you subtract you get a positive profit of $26.

Answer:

5

Step-by-step explanation:

For profit to be had, the selling price (represented by $10x, x being number of bouquets sold) must be greater than the cost to produce (here, -x^4 + 3x^3 + 5x^2 + 20x +1).

Set up an inequality such that 10x is greater than the cost to produce.

10x > -x^4 + 3x^3 + 5x^2 + 20x + 1

-Solving the inequality by subtracting 10x from both sides, we have:

0 > -x^4 + 3x^3 + 5x^2 + 10x + 1

-Using a graphing calculator, (the one they give you on Edgenuity) graph the new function and look for where the graph is below the x axis. (y is less than 0)

Looking at the graph, we see that when x is greater than 0, (you can't sell a negative amount of bouquets) y is greater than 0 up until x = 4.579. After 4.579, the y values become negative. (what we want to be looking at according to the inequality.)

You can't sell 4.579 bouquets, and even if you could, you'd be breaking even, with y=0. The answer isn't 4, because according to the graph and inequality, y would be greater than 0 (making the inequality false). Because of this, we have to find the next whole positive number that would make the inequality true, and that is 5.

Answer:

C. 180

Step-by-step explanation:

180/9 = 20

Answer:

Step-by-step explanation:

180  is a choice of multiple 9

180/9 = 20

answer is b

Answer:x=-8

Step-by-step explanation:

Answer:

I can not see the table, so i will answer this in a general way.

Ok, let's see a rough image of what is happening.

First, Joey sends the email to 2 friends.

So first, 2 people have the email

Then each friend sends the email to 3 new people.

So now the number of people that has the email is:

2 + 2*3 = 2 + 6.

Now, the 6 new people that received the email send it to other 3 new people each, so now the number of people that got the email is:

2 + 6 + 6*3

and so on.

We already can see the pattern here, we can write this as:

∑aₙ

Where aₙ = 3*aₙ₋₁

and a₀ = 2.

So with that information, we can find the number of iterations, n, for a given number of people that received the email A.

A = ∑aₙ = (a₀ + a₁ + a₂ + ....) = (2 + 2*3 + 2*3*3 + ...)

Answer: The answer is C

Answer:

B

Step-by-step explanation:

Since the person used >200 kWh that month, you would use the bottom equation: 0.15(x-200)+20.

(BTW, the x>200 or x≤200 means if they used more or less than/equal to 200 hours)

From there, you can plug in the number of hours for x, which is 400. So, 0.15([400]-200)+20

0.15(200)+20

30+20

50

The bill for a person that uses 400 KWh is $50.

Option B is the correct answer.

We have,

The number of kilowatts is more than 200.

So,

From the piecewise function choose the function for x > 200.

i.e

b(x) = 0.15 (x - 200) + 20

This is used to calculate the bill.

Now,

Substitute x = 400 KWh in b(x).

b(x) = 0.15 (x - 200) + 20

Simplify the expression.

= 0.15 (400 - 200) + 20

= 0.15 x 200 + 20

= 30 + 20

Add the values.

= 50

Thus,

The bill for a person that uses 400 KWh is $50.

Learn more about functions here:

https://brainly.com/question/28533782

#SPJ4

Answer:

$576.93

Step-by-step explanation:

Car A

13 miles to the gallon (mpg)

13 miles = 1 gallon

Car B

26 miles to the gallon

26 miles = 1 gallon

Car B is more fuel efficient than car A

1 gallon = $3

Assuming that she drives 5,000 miles a year

Cost of buying Car A

5000 miles / 13 miles × $3

= 384.62 × 3

= $1,153.86

Cost of buying car B

5000 miles / 26 miles × $3

= 192.31 × 3

= $576.93

Car A - car B

= $1,153.86 - $576.93

= $576.93

Jasmine will save $576.93 by buying the more fuel efficient car if gas is $3 per gallon

Answer: A, B, and C

Step-by-step explanation:

A, B, and C are the only 3 that are liner functions

Answer:

the first one is D

Step-by-step explanation:

I hope this helps

Answer:

the number of boxes that would take fill

the storage completely is 60 boxes.

Step-by-step explanation:

given:

A storage unit has the dimensions 6 ft. x 7 1/2 ft. x 4 1/2 ft.

find:

What number of

1 1/2 ft. x 1 1/2 ft. x 1 1/2 ft. cardboard boxes would it take to completely

fill this storage unit?

Volume of a storage unit = 6 x 7.5 x 4.5

Volume of a storage unit = 202.5  ft³

Volume of a cardboard box = 1.5 x 1.5 x 1.5

Volume of a cardboard box = 3.38 ft³

to get the number of cardboard boxes to fill in the storage unit,

Number of boxes =     202.5 ft³    

                                     3.38 ft³

Number of boxes = 60

therefore,

the number of boxes that would take fill the storage completely is 60 boxes.

Answer:

LN=12

Step-by-step explanation:

3x-9=x+1 add 9 to both sides

3x=x+10 subtract 1x on both sides

2x=10 divide by 2

x=5

3(5)=15-9=6

5+1=6

6+6=12

Answer:

Step-by-step explanation:

x      - the number

x + 10   - the sum of the number and ten

4×(x + 10)    - four times the sum of the number and ten

4×(x + 10) = 60

          ÷4         ÷4

   x + 10 = 15

      -10       -10

     x = 5

Answer:

5x² + 5x - 7

Step-by-step explanation:

Step 1: Write equation

(-x² - x) + (6x² + 6x - 7)

Step 2: Combine like terms (x²)

5x² - x + 6x - 7

Step 3: Combine like terms (x)

5x² + 5x - 7

Answer:

Step-by-step explanation:

6x^2 + 6x - 7 - x^2 - x

5x^2  + 5x - 7

Answer:

A decimal fraction in which a figure or group of figures is repeated indefinitely, as in 0.666

Step-by-step explanation:

Answer:

A repeating decimal is a decimal fraction in which a figure or group of figures is repeated indefinitely, such as 0.888 or such as 1.734734734

Answer:

A: Gallon

B: Kilogram / Kilogramme

C: Meter / Metre

Step-by-step explanation:

I know these already

Answer:

A: Quart

B: Gram

C: Meter

Step-by-step explanation:

I had this question on a test and I got it right with theese answers above.

Answer:

3 - 2.5 - 1

As the first right is positive 3 and the second arrow is at -2.5 and last is at negative 1

☽------------❀-------------☾

Hi there!

~

I think it's (C) [tex]3 - 25 - 1[/tex]

❀Hope this helped you!❀

☽------------❀-------------☾

4x + 5=2x-3

4x-2x=-5-3

2x=-8

X=-8/2

X=-4

Answer:

-4

Step-by-step explanation:

took the test