1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yKpoI14uk [10]
3 years ago
9

Which operation should you perform first when evaluating the expression 3²+ 2​

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
8 0
<h3>Answer: Exponents is done first (evaluate 3^2 first)</h3>

Explanation:

The acronym PEMDAS helps determine the order of operations

P = parenthesis

E = exponents

M = multiplication

D = division

A = addition

S = subtraction

With the expression 3^2+2 we have two operations going on here: exponents and addition.

Since exponents comes before addition (E comes before A in PEMDAS), this means we evaluate 3^2 first, then add later.

Harrizon [31]3 years ago
6 0

Answer:

You should calculate 3² first.

Step-by-step explanation:

In PEMDAS, E (which stands for exponents) comes before A (which stands for addition) so therefore you should calculate 3² first.

You might be interested in
an inlet pipe and a hose together can fill the pond in 10 hours. The inlet pipe alone can complete the job in one hour less time
Annette [7]

Answer:

The hose pipe can fill the pond in 21.465 hours.

The inlet pipe can fill the pond in 20.465 hours.

Step-by-step explanation:

Given that, a inlet pipe and a hose pipe together can fill the pond in 10 hours.

The inlet pipe alone can fill the pond in one hour less time than the hose pipe can  fill the pond.

Let the hose pipe can complete the job in x hours.

Then the inlet pipe can fill the pond in (x-1) hours.

The rate of filling of hose pipe is =\frac{1}{x}

The rate of filling of inlet pipe is =\frac{1}{x-1}

The rate of filling of both pipes is = \frac 1{10}

According to the problem,

\frac{1}{x}+\frac{1}{x-1}=\frac{1}{10}

\Rightarrow \frac{x-1+x}{x(x-1)}=\frac1{10}                              [ simplifying the fraction]

\Rightarrow \frac{2x-1}{x^2-x}=\frac1{10}                            

\Rightarrow 10(2x-1)= x^2-x                [ Multiplying 10(x²-x) both sides]

\Rightarrow x^2-x= 20x-10

\Rightarrow x^2-x-20x+10=0             [ simplifying ]

\Rightarrow x^2-21x+10=0

\Rightarrow x=\frac{-(-21)\pm\sqrt{(-21)^2-4.1.10}}{2.1}       [ applying quadratic formula]

\Rightarrow x=\frac{21\pm21.93}{2.1}

⇒ x= 21.465,  -0.465

x= - 0.465 does not possible, since time can not be negative.

∴x=21.465

The hose pipe can fill the pond in 21.465 hours.

The inlet pipe can fill the pond in (21.465-1)=20.465 hours.

3 0
3 years ago
A<br> 100 cm²<br> b<br> 9 cm²<br> c<br> 225 cm²<br> d<br> 28.26 cm²
nasty-shy [4]

Answer:

28.26 cm^2

Step-by-step explanation:

A = (pi)r^2

A = 3.14 * (3 cm)^2

A = 3.14 * 9 cm^2

A = 28.26 cm^2

6 0
3 years ago
Simplify -3+6i-(-5-3i)-8i​
borishaifa [10]

Answer:

2 +i

Step-by-step explanation:

-3+6i-(-5-3i)-8i​

Distribute the minus sign

-3 +6i +5 +3i -8i

Combine like terms

-3+5 +6i +3i -8i

2 +i

4 0
3 years ago
Insanity offers birthday parties for a fee of $160 plus $4 per person. If you can spend no more than $200 on your party, what is
never [62]
Max amount of people who can attend is 10.

200-160=40
40 ÷4= 10
4 0
3 years ago
Please help!!!!!!!!!!!!!!!! 100pts,
Helga [31]

QUESTION:

The code for a lock consists of 5 digits (0-9). The last number cannot be 0 or 1. How many different codes are possible.

ANSWER:

Since in this particular scenario, the order of the numbers matter, we can use the Permutation Formula:–

  • P(n,r) = n!/(n−r)! where n is the number of numbers in the set and r is the subset.

Since there are 10 digits to choose from, we can assume that n = 10.

Similarly, since there are 5 numbers that need to be chosen out of the ten, we can assume that r = 5.

Now, plug these values into the formula and solve:

= 10!(10−5)!

= 10!5!

= 10⋅9⋅8⋅7⋅6

= 30240.

3 0
2 years ago
Other questions:
  • Jeremy collected nickels for 1 week. He is making stacks of his nickels to determine how many he has. The thickness of 1 nickel
    11·1 answer
  • A store sold a case of shampoo from a supplier for 17.85 . that had marked up 110% what was the original price?
    5·1 answer
  • Given: △ABC, m∠B=120° AB=6, BC=10 Find: Area of △ABC
    11·1 answer
  • What is the constant in this expression? m-4n+3.5+4/5p
    12·2 answers
  • Look at the picture/math.
    12·2 answers
  • Sarah ordered 39 shirts that cost $8 each. She can sell each shirt for $16.19. She sold 32 shirts to customers. She had to retur
    7·1 answer
  • What is the value of the expression below when y==8?<br><img src="https://tex.z-dn.net/?f=y%20%20-%20y%20-%202" id="TexFormula1"
    6·1 answer
  • Para que sirve el álgebra​
    5·2 answers
  • A truck covers a particular distance in 3 hours with the speed of 60 miles per hour. If the speed is increased by 30 miles per h
    9·1 answer
  • Express your answer in scientific notation. 0.00045-2.5x10^-5​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!