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BARSIC [14]
4 years ago
5

2=10c-4(2c-9) What is c equal to?

Mathematics
1 answer:
Delicious77 [7]4 years ago
6 0

Answer:

c = -20

Step-by-step explanation:

2 = 10c - 8c + 36

-40 = 2c

c = -20

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The students at Walden Middle school are selling tins of popcorn to raise money for new uniforms. They sold 42 tins in the first
tiny-mole [99]

Answer:

$388.5

Step-by-step explanation:

5 0
3 years ago
The cylinder shown has a lateral surface area of about 60sq in. Which answer is closest to the height of the cylinder? Use 3.14
JulijaS [17]

Answer:3.2 inch

Step-by-step explanation:

We have the following data:

Al (lateral surface area) = 80 in²

R (ratio) = 4 in

h (height) = ? (in inches)

Adopt : π ≈ 3.14

We apply the data to the formula, we have:

Answer:We have the following data:

Al (lateral surface area) = 80 in²

R (ratio) = 4 in

h (height) = ? (in inches)

Adopt : π ≈ 3.14

We apply the data to the formula, we have:

Answer:

≈ 3.2 inches

________________________

≈ 3.2 inches

________________________

6 0
3 years ago
Suppose the Tower of Hanoi rules are changed so that stones may only be transferred to an adjacent clearing in one move. Let In
Svet_ta [14]

Answer:

l_n=3^n-1

Step-by-step explanation:

We will prove by mathematical induction that, for every natural n,  

l_n=3^n-1

We will prove our base case (when n=1) to be true:

Base case:

As stated in the qustion, l_1=2=3^1-1

Inductive hypothesis:  

Given a natural n,  

l_n=3^n-1

Now, we will assume the inductive hypothesis and then use this assumption, involving n, to prove the statement for n + 1.

Inductive step:

Let´s analyze the problem with n+1 stones. In order to move the n+1 stones from A to C we have to:

  1. Move the first n stones from A to C (l_n moves).
  2. Move the biggest stone from A to B (1 move).
  3. Move the first n stones from C to A (l_n moves).
  4. Move the biggest stone from B to C (1 move).
  5. Move the first n stones from A to C (l_n moves).

Then,

l_{n+1}=3l_n+2.

Therefore, using the inductive hypothesis,

l_{n+1}=3l_n+2=3(3^n-1)+2=3^{n+1}-3+2=3^{n+1}-1

With this we have proved our statement to be true for n+1.    

In conlusion, for every natural n,

l_n=3^n-1

8 0
3 years ago
If s(x) = 2 - x and f(x) = 3x, which value is equivalent to (s f) (-7)
Soloha48 [4]

Answer:

Step-by-step explanation:

the first method :

s(x) = 2 - x and f(x) = 3x

(s f) (-7) = s(-7) ×f(-7)

but : s(-7) = 2 - (-7) =2+7 = 9

       f(-7) = 3(-7) = - 21

so : (s f) (-7) = (9)×(-21) = - 189

the second method :

calculate : (s f) (x) == s(x)×f(x) = (2-x) 3x = 6x - 3x²

(s f) (-7) = 6(-7) -3 (-7)² = - 42 -147 = -189

6 0
3 years ago
HELP ASAP I WILL GIVE BRANIESTT!!!!!!!!!!!!!!!!!!!! Please help me I neeed a 100%
n200080 [17]

Answer:

1. Plot 3 on 2, Plot 3 on 2.25, plot 4 on 2.5 etcc

2. D) 180

Step-by-step explanation: Took the test

4 0
3 years ago
Read 2 more answers
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