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3 years ago

PLZ HELP ME NOW!!!!! I WILL GIVE BRAINLIEST!!! combine like terms 3a + 7 - 11 - 9a

Mathematics

2 answers:

Arturiano [62]3 years ago

6 0

Answer:

-6a - 3

Step-by-step explanation:

hope this helps

OleMash [197]3 years ago

5 0

Answer:

11a -18

Step-by-step explanation:

Inverse 9A make it to -9A take it to the other side and inverse +7 to -7 and take it to below -11 so -11 -7 is -18

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What is an an expression that is equivalent to 9 ( 3x + 5 + x ) without using parentheses.

torisob [31]

Answer:

27x + 45 + 9x

37x + 45

Step-by-step explanation:

6 0

2 years ago

Nat opened an account that earns 1.4% simple annual interest. He will earn $21 total interest after 3 years. How much did he dep

nataly862011 [7]

Answer:

Therefore Nat deposited $500 when he opened the account.

Step-by-step explanation:

Given that Nat opened an account that earns 1.4% simple annual interest. He will earn $21 total interest after t years.

The simple interest formula is

$I= Prt$

I= interest= $21

P= Principal=?

t= time in year= 3 years.

r = rate of interest= 1.4%= 0.014

$I= Prt$

$\Rightarrow P=\frac{I}{rt}$

$=\frac{21}{0.014\times 3}$

=$500

Therefore Nat deposited $500 when he opened the account.

8 0

3 years ago

See attachment for the full question

alexandr402 [8]

The inverse of the demand function is; P = 9 - 0.25Q

The profit-maximizing price and quantity are; $8.5 and 2 units.

The maximum profit is; $1

<h3>How to find the inverse of a function?</h3>

A) The demand function we are given is;

Q = 36 - 4P

Making P the subject gives the inverse demand function;

P = (36 - Q)/4

P = 9 - Q/4

P = 9 - 0.25Q

B) The profit-maximization point is the point at which MR = MC.

MR refers to the marginal revenue and MC is the marginal cost.

MC can be calculated as the first derivative of the cost function:

C(Q) = 4 + 4Q + Q²

MC = C'(Q) = 2Q + 4

Total Revenue = Price * Quantity

Total Revenue = (9 - 0.25Q) * Q

Total Revenue = 9Q - 0.25Q²

MR is gotten by differentiating Total Revenue to get;

MR = 9 - 0.5Q

Applying the condition MR = MC, we have;

9 - 0.5Q = 4 - 2Q

Solving for Q gives Q = 2

Thus, profit maximizing quantity is 2.

Thus, profit maximizing price will be;

P(2) = 9 - 0.25(2)

P(2) = $8.5

C) Formula for Maximum Profit is;

Profit = Total Revenue - Total Cost

Total Revenue = 8.5 * 2

Total revenue = $17

Total Cost is;

C(2) = 4 + 4(2) + 2²

C(2) = $16

Thus;

Maximum Profit = 17 - 16 = $1

Read more about Inverse of a function at; brainly.com/question/13948067

#SPJ1

3 0

2 years ago

Solve the system of equations by substitution. X + y = 32 y = 7x The solution of the system is (Simplify your answer. Type an or

sweet-ann [11.9K]

$\qquad\qquad\huge\underline{{\sf Answer}}♨$

Let's solve ~

The given equations are :

$\qquad \sf \dashrightarrow \:x + y = 32$

and

$\qquad \sf \dashrightarrow \:y = 7x$

Now, plug in the value of y from equation 2 into equation 1 to find out the value of x ~

$\qquad \sf \dashrightarrow \:x + y = 32$

$\qquad \sf \dashrightarrow \:x + 7x = 32$

$\qquad \sf \dashrightarrow \:8x = 32$

$\qquad \sf \dashrightarrow \:x = 32 \div 8$

$\qquad \sf \dashrightarrow \:x = 4$

Now, plug the value of x in equation 2 to find y

$\qquad \sf \dashrightarrow \:y = 7x$

$\qquad \sf \dashrightarrow \:y = 7 \times 4$

$\qquad \sf \dashrightarrow \:y = 28$

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5 0

2 years ago

How do you multiply 2/3 and n?

adoni [48]

I believe the answer is 2/3n

6 0

4 years ago

Read 2 more answers