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Nat2105 [25]
3 years ago
15

Find the value of (a)6 (6×5÷3-2) (b) (4÷3)- 3+4​

Mathematics
1 answer:
kipiarov [429]3 years ago
5 0
This required PEMDAS

a. 6(30/3 -2) = 6(8) = 48

b. (4/3) - 7 = (4/3 - 21/3) = -17/3
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It takes an elevator 4 seconds to travel from the first floor to the fourth floor. How long does it take the elevator to travel
ikadub [295]

Answer:  The elevator takes 20 seconds to travel from first floor to sixteenth floor.

Step-by-step explanation:  Given that an elevator takes 4 seconds to travel from the first floor to fourth floor.

We are to find the time taken by the elevator to travel from first floor to the sixteenth floor.

Number of floors between first floor and fourth floor = 4 - 1 = 3,

and

number of floors between first floor and sixteenth floor = 16 - 1 = 15.

So, time taken by the elevator to travel 3 floors = 4 seconds.

Time taken by the elevator to travel 1 floor =\dfrac{4}{3}~\textup{seconds}.

Therefore, time taken by the elevator to travel 15 floors will be

\dfrac{4}{3}\times15=4\times5=20~\textup{seconds}.

Thus, the elevator takes 20 seconds to travel from first floor to sixteenth floor.

7 0
3 years ago
Read 2 more answers
What is the answer to 2(8 + 7) - 3(5)
Olenka [21]

Answer:15

Step-by-step explanation:

2(8+7) -3(5)

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3 0
3 years ago
Evaluate the expression 7x-10
RoseWind [281]

Answer:

-3x

Step-by-step explanation:

4 0
3 years ago
What's the equation of the line that passes through the points (-8,4) and (0,22)?
nikklg [1K]

Answer:

Step-by-step explanation:

y=mx+b where m=slope and b=y intercept

m=(y2-y1)/(x2-x1)=(22-4)/(0+8)=2.25

y=2.25x+b, using point (0,22) we can solve for b

22=2.25(0)+b

b=22

y=2.25x+22 or stating it fractionally

y=9x/4+22

6 0
3 years ago
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mylen [45]
It would be c by process of elimenation
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3 years ago
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