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vova2212 [387]
4 years ago
9

Is 21/5 a rational number

Mathematics
1 answer:
Anastaziya [24]4 years ago
8 0

The number 21/5 is a rational number because it can be simplified down to 4.2, or 21/5

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I need help!!!
BaLLatris [955]

(1) -6 x + 8 x = -46 Answer = -23

(2) w + 3/4 = w - 2/2 Answer = {}

(3) 2 x + 16 = 3(x - 9) Answer = 43

(4) Answer D)

(5) -3 x + 4 = -8 Answer x = 4

(6) C)

(7) B)

(8) C)

(9) x + 3/5=2 Answer x = 7/5

(10) 4 - 2 x = 10 Answer x=  = -3

If something is wrong apologize, I hope it helps.


6 0
3 years ago
Examine the power.
Semenov [28]
Answer is 325 your welcome
6 0
4 years ago
Read 2 more answers
Whats is the anwser to twelve times twenty
balandron [24]

Answer:240

Step-by-step explanation:

120

× 12

------

240

5 0
3 years ago
Which of the following mathematical symbols represents “the opposite of”?what do they mean
Lunna [17]

The negative sign show the change in direction, that is the opposite side of the value.

In the number line, 1 is the opposite of -1, that is the digit from the left side is the opposite value of the right side.

Consider an object P is moving in positive x direction than on moving the object into its opposite direction, it will move along the negative x axis.

Answer : A) -

5 0
1 year ago
HELP PLEASE WILL GIVE BRAINLIST IF CORRECT
Nat2105 [25]

Answer:

a.) First check on the height of the bar that ranges between 20 and 24 which is 6. The 6 is the number of students who bought 20 books or more, so get the percentage of those students who bought 20 or more books; divide 6 which is the number of students who bought 20 books or more with the total number of students which is 40 then multiply with 100.

% of students who bought 20 or more books = 6/40 ×100

=15

Step-by-step explanation:

b.) Find the area of a trapezium

= 1/2 × {a+b} × h

= 1/2 × {9 + 13} ×12

= 132

= 1/2 × {13 + 6} × 12

= 108

Mean no. of books bought = 132 + 108

= 240

4 0
3 years ago
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