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
Orlov [11]
2 years ago
14

PLS HELP !!! I need this question done quick

Mathematics
2 answers:
NeX [460]2 years ago
5 0

Answer:

a. 17  b. 51

Step-by-step explanation:

Follow Order of Operations (PEMDAS):

Parentheses, Exponents, Multiplication/Division, Addition/Subtraction

a.  9 + 4² - (4-2) • 4

9 + 4² - (4-2) • 4 –––Start with (4-2) = 2 (parentheses)

9 + 4² - 2 • 4 ––– 4² (exponents)

9 + 16 - 2 • 4 ––– 2 • 4 (multiplication)

9 + 16 - 8 ––– 9 + 16 (addition)

25 - 8 ––– 25 - 8 (subtraction)

17

b. 15 - 4 + 2(7-3) • 5

15 - 4 + 2(7-3) • 5 ––– Start with 2(7-3)

~ Note: this can be done using distributive property (2•7 - 2•3) OR solving the parentheses first and then multiplying 2(4). Both get 8 and same end result.

15 - 4 + 8 • 5 ––– 8 • 5 (multiplication)

15 - 4 + 40 ––– 15 - 4 (subtraction) *Note: Subtraction and addition are interchangeable in the order because you do it left to right*

11 + 40 ––– 11 + 40 (addition)

51

wlad13 [49]2 years ago
3 0

Answer:

(a. 7)  (b. 51)

Step-by-step explanation:

A.

9 + 4^{2} - (4-2) * 4\\\\9 + 4^{2} -  (2) * 4\\9 + 16 - 2 * 4\\9 + 16 - 8\\25 - 8\\17 \\

B.

15 - 4 + 2 (7 - 3) * 5\\15 - 4 + 2 (4) * 5\\15-4+(2*4*5 )\\15-4+40\\11 + 40\\51

(I don't know the numerical values)

You might be interested in
What is the area of 3 5\7ft by 2 6\7ft
erica [24]
3 5/7 x 2 6/7
= 3.71428564 x 2.8571428
= 10.6 ft^2 (3 sig. fig.)
4 0
3 years ago
ing needs 3 cups of milk to make 30 cookies. How many ounces of milk would he need to make 120 cookies?
Llana [10]

Answer:

12 cup of milk.

Step-by-step explanation:

if 3 cups of milk can make 30 cookies it means 1 cup of milk can make 10 cookies then for 100 cookies we need 10 cup of milk and 30 more means 3 more so answer is 12

8 0
3 years ago
Two brothers went shopping at a back to school sale where all shirts and shorts were the same price. The younger brother spent $
Lana71 [14]
145÷14=10.357142857142857143
5 0
3 years ago
Xavier rides his bike 5 1/4 miles or 82% of his goal for the day. What is his goal for the day?
Leno4ka [110]
Use ratio and proportion

5.25/x= 82/100
cross multiply
82 x= 525
     x= 6.4 miles

Hope this helps
8 0
2 years ago
Which of the following inequalities is correct?
Mariana [72]

Is the answer -5 > 0?

7 0
3 years ago
Other questions:
  • Can you guys Divide and check using Multiplication for these 2 Problems? 1st: 326 Divided by 53. And 192 Divided by 38
    8·1 answer
  • A total of 17,100 seats are still available for the next hockey game. If 62% of the tickets are sold, how many seats are in the
    5·2 answers
  • a recipe calls for 32 fluid ounces of heavy cream how many one pack of 2 days of heavy cream are needed to make the recipe
    15·1 answer
  • Are these ture or false
    12·2 answers
  • Please help me on this question
    15·2 answers
  • Solve the equation 3x+5y=16 for y
    14·2 answers
  • Identify the coefficient of 17 ×y3 z12
    5·1 answer
  • Devon makes $42,720 a year. What is the maximum amount he can afford for a mortgage each month? A. $890 B. $869 C. $875 D. $825​
    10·1 answer
  • A sign in a bakery gives these options:
    5·1 answer
  • HELP ME NOW!!!!!!!!!! (ALGEBRA)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!