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valentina_108 [34]
2 years ago
6

If it takes 68 seconds for you to walk up a flight of stairs from the first floor to the third-floor how long would it take you

to walk from the first floor to the seventh floor
Mathematics
1 answer:
Rudiy272 years ago
7 0

Answer:

204 Seconds

Step-by-step explanation:

Step 1 - 68/2 this is to find the unit cost in seconds that it takes to walk up the stairs to get 34.

The 2 is from the amount of flights of stairs you have to walk up to get from floor 1 to floor 3.

Step 2 - 34*6 this is because the unit price is 34seconds/flight of stairs to get 204.

Answer 204 Seconds.


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It requires 350 joules to raise a certain amount of a substance from 10.0°C to 30.0°C. The specific heat of the substance is 1.2
Sonbull [250]

Answer:

15 g.

Step-by-step explanation:

The following data were obtained from the question:

Heat required (Q) = 350 J

Initial temperature (T1) = 10.0 °C

Final temperature (T2) = 30.0 °C

Specific heat capacity (C) = 1.2 J/g°C

Mass (M) =..?

Next, we shall determine the change in temperature.

This is illustrated below:

Initial temperature (T1) = 10.0 °C

Final temperature (T2) = 30.0 °C

Change in temperature (ΔT) =..?

Change in temperature (ΔT) = T2 – T1

Change in temperature (ΔT) = 30 – 10

Change in temperature (ΔT) = 20 °C

Finally, we shall determine the mass of the substance as follow:

Heat required (Q) = 350 J

Specific heat capacity (C) = 1.2 J/g°C

Change in temperature (ΔT) = 20 °C

Mass (M) =.?

Q = MCΔT

350 = M x 1.2 x 20

Divide both side by 1.2 x 20

M = 350 / (1.2 x 20)

M = 14.5 ≈ 15 g

Therefore, the mass of the substance is

15 g.

5 0
3 years ago
The box-and-wishker plots bellow
Natasha2012 [34]

Answer:

H: Plots 1 & 2

Step-by-step explanation:

4 0
2 years ago
Original price: $20 Discount %: 35%
dangina [55]

Answer:

$13 or $7 off

Step-by-step explanation:

20-35%=13

So that means that it is $7 off and it is now $13

4 0
3 years ago
If you are given only the measurements of the three angles of a right triangle, can you find the lengths of the three sides?
erma4kov [3.2K]

Answer:

No

Because you can't find any of the length if you don't have two other lengths

Step-by-step explanation:

study cosine rule and sine rule

you use cosine rule when you have one angle in-between two length

while you use sine rule when you have two angles and one length

just study cosine rule and sine rule you will understand what am saying

5 0
3 years ago
Find the value of x such that l ⊥ m. A) 10.7 B) 16 C) 46 D) 48
dsp73

Answer:

<h3>B. 16°</h3>

Step-by-step explanation:

The diagram lacks the appropriate figure. Find the figure attached. If the line I is perpendicular to m, this means that the sum of the given angles will be equal to 90° as shown;

(3x+5)° + 37° = 90°

open the parenthesis

3x+5 + 37° = 90°

3x+42 = 90

subtract 42 from both sides of the equation

3x+42-42 = 90-42

3x = 48

Divide both sides of the resulting equation by 3;

3x/3 = 48/3

<em>x = 16</em>

<em>Hence the value of x is 16°</em>

4 0
4 years ago
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