All categories

1 year ago

Evaluate the expression 21 ÷ 3 + 8 − 4. A) 19 B) 17 C) 15 D) 11

Mathematics

2 answers:

N76 [4]1 year ago

6 0

Answer:

D) 11

Step-by-step explanation:

Division and multiplication always comes first in an equation. Since there is no multiplication in the expression, we can divde first.

21 / 3 = 7

Our new expression will be: 7 + 8 - 4

Now we can just add (7) , (8), and (-4) not caring about the order, since they are all addition or subtraction.

I'll do the addition first, but order does not matter.

7 + 8 = 15

15 - 4 = 11

So 11 is our final answer.

Looking at the answer choices, D has 11, so D is our answer for this question.

nirvana33 [79]1 year ago

5 0

Answer:

Step-by-step explanation:

We will use the order of operations to evaluate the expression.

From left to right , Multiplication/Division followed by Addition/Subtraction.

21 / 3 + 8 - 4

= 7 + 8 - 4

= 15 - 4

= 11

Therefore, the answer is D

You might be interested in

Pat is painting a stage backdrop for a play. The paint he is using covers 90 square feet per quart. How many quarts of paint sho

Scorpion4ik [409]

A) If you cut off half the peaks (3.5 ft down from the top), they will just fill the valleys making a rectangle 18.5 ft by 30 ft. The area is the product of these dimensions.
A = (18.5 ft)*(30 ft) = 555 ft²

b) To determine the number of quarts of paint required, divide this number by 90 ft². Since you cannot buy a partial quart, if there is any remainder, use the next higher integer number of quarts.
555/90 ≈ 6.2 so Pat should buy 7 quarts of paint.

4 0

3 years ago

PLEASE HELP. I WILL GIVE BRAINLIEST! I'M HAVING SOME TROUBLE.

nalin [4]

Answer:

A.) The coordinates of M' are (-2/4, -4/5)

The coordinates of N' are (1/5, 1)

B.) The scale factor of the dialation is 3

7 0

3 years ago

5.7 as a mixed number in simplist form

Sveta_85 [38]

5.7 is 5 7/10 and it cannot be simplified

6 0

2 years ago

Read 2 more answers

5 Discuss FIVE important steps relating to career decision making

QveST [7]

Identify what you are good at,
Subjects you are good in,
Types of careers that are in the job market
Salary of that certain career
And the type of working environment that you want to work in e.g indoors or outdoors

Plz mark as brainleast plzzz

3 0

2 years ago

Find the LCM of the following. A. 28,42,35 B. 48,72,96 C. 36, 44

Ne4ueva [31]

28/2= 14 42/2= 21 35/7= 5

14/ 2= 7 21/3= 7

28= 2^2 × 7

42= 2 × 3 × 7

35= 7 × 5

LCM= 420

48/2= 24. 72/2= 36. 96/3= 32

24/2= 12. 36/3= 12. 32/2= 16

12/3= 4. 12/3= 4. 16/2= 8

4/2= 2. 4/2= 2. 8/2= 4

4/2= 2

48= 2^4 × 3

72= 2^3 × 3^2

96= 2^5 × 3

LCM= 288

36/3= 12. 44/2= 22

12/3= 4. 22/2= 11

4/2= 2

36= 3^2 × 2^2

44= 2^2 × 11

LCM= 396

8 0

2 years ago

Read 2 more answers