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
faust18 [17]
3 years ago
13

7 + (2 + 6) 2 ÷ 4 ⋅ (1/2)^4 A: 23 B: 18 C: 9 D: 8

Mathematics
1 answer:
Drupady [299]3 years ago
6 0

Answer:

D: 8

Step-by-step explanation:

7 + (2 + 6) ^2 ÷ 4 ⋅ (1/2)^4

According to PEMDAS

We to parentheses first

7 + (8)^ 2 ÷ 4 ⋅ (1/2)^4

Then we do exponents

7 + 64 ÷ 4 ⋅ (1/16)

The multiply and divide from left to right

7+64 ÷ 4 ⋅ (1/16)

7+16 ⋅ (1/16)

Then add and subtract from left to right

7+1

8

You might be interested in
Bob did chores for his neighbor. The first day he earned $8. Then he earned $10 a day for
Bumek [7]

Answer: $128

Step-by-step explanation: So first Bob earned 8 dollars. Then he started earning 10 dollars a day every week for 2 weeks. that would have been 148 dollars (plus the 8 dollars he earned in the beginning), but he took a break once a week, subtracting 20 dollars from his pay, giving him 128 dollars in total.

Let me know if this was helpful! :D

3 0
3 years ago
Sara is saving her summer earnings for a $500 school trip in the fall. She has $200 in her savings account at the beginning of J
Vilka [71]

Answer:she will need around 9 weeks and she will have enuogh

Step-by-step explanation:

9  

5 0
3 years ago
Zach paid $56.50 including sales tax for a book priced at $45. What was the sales tax rate?
kondaur [170]

Answer:

25.56% or $11.50

Step-by-step explanation:

I took it and put it in a sales tax calc.

3 0
3 years ago
According to the Guinness Book of World Records, a woman from Russia, Mrs. Vassilyeva, had 69 children between the years 1725 to
Maurinko [17]

Answer:

36.36% probability that she gave birth to quadruplets

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcoes.

Desired outcomes:

Giving births to quadruplets.

She has 4 sets of quadruplets.

So D = 4

Total outcomes:

At least 3 children(triplets).

7 sets of triplets and 4 sets of quadruplets.

So T = 7 + 4 = 11

Probability:

p = \frac{D}{T} = \frac{4}{11} = 0.3636

36.36% probability that she gave birth to quadruplets

8 0
3 years ago
Factor out this expression: 4x² - 9y2
Marta_Voda [28]

Answer:

(2x+3y)(2x-3y)

Step-by-step explanation:

a² - b² = (a + b)(a - b)

4x² - 9y²

= (2x)² - (3y)²

= (2x + 3y)(2x - 3y)

5 0
3 years ago
Other questions:
  • How are secants related to chords
    9·1 answer
  • How do you graph y=2sin(x-pi)+1
    15·1 answer
  • The area of a rectangular deck is 680 square feet. The deck's width is 17 feet. What is its perimeter?
    8·1 answer
  • It’s due tomorrow and I don’t have time to to do it now I have to do something for my other classes
    9·1 answer
  • Please answer the following attachment down below.<br><br> I would greatly appreciate it if you did.
    13·1 answer
  • Does anyone know w(t) = 3t - 1, w(-4.2) ?
    12·1 answer
  • A small painting has an area of 400 cm2. The length is 4 more than 2 times the width. Find the dimensions of the painting. Solve
    5·1 answer
  • Given points H, I and J and HI = 9,1J = 9 and HJ = 16 . Are the three points collinear?​
    6·1 answer
  • Enter an equation in the form of y = MX + b that represents the function described by the graph ​
    7·1 answer
  • Help! Please help!,!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!