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Rufina [12.5K]
3 years ago
13

Which number sentence has a difference of 5? 8-(-3) 0 -3-8 -3-(-8) 3-(-8)

Mathematics
1 answer:
valina [46]3 years ago
6 0

Answer:

The 4th one

Step-by-step explanation:

-3-(-8)=5

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Daniela and Jack are hiking a steady incline. They use their GPS device to determine their elevation every 15 minutes. At 15 min
kow [346]

Answer:

h=40t+9700

where the elevation, h, is in feet and time, t, is in minutes.

Step-by-step explanation:

At the time, t_1=15 min, the elevation, h_1= 10,300 feet and

at the time t_2= 30 min, the elevation, h_2=10,900 feet.

As they are hiking a steady incline, so the change in the elevation with respect to time will be constant.

So, there will be a linear relationship between the elevation and the time.

Let h be the elevation at any time instant t, so the linear relation among these quantities is

h=mt+C_0\;\cdots(i)

where m is the rate of change of elevation with respect to time and C_0 is constant.

The change in the elevation, \Delta h=h_2-h_1= 10,900-10,300=600 feet.

and the change in time, \Delta t=t_2-1_1=30-15=15 min.

So, change in the elevation in unit time,

m=\frac{\Delat h}{\Delta t}=\frac{600}{15}=40 feet/min.

Now, from equation (i)

h=40t+C_0

As the elevation, h=h_1 at time t=t_1, so

10,300=40\times15+C_0

\Rightarrow C_0=9700

Hence, the required equation is

h=40t+9700

where the elevation, h, is in feet and time, t, is in minutes.

3 0
3 years ago
What is 3,600 seconds per hour times 24 hours per day times 365.25 days per year?
iren2701 [21]

Answer:31557600

Step-by-step explanation:

3600 x 24 x 365.25

Which equal 31557600

8 0
3 years ago
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You and 4 of your friends want to make some soup for lunch each person would like to eat 1 1/3 cup soup how many cups of soup wi
Pavlova-9 [17]
Multiply the amount of people by the amount of cups they want


4*1 1/3=5 1/3
You would have to make 5 and 1/3 cups of soup

Hope this helps!
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3 years ago
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Two numbers are in the ratio 3:2. If the smaller number is 24, find the larger number
Daniel [21]
3:2
3x - first number
2x - second number

2x = 24 / : 2
x = 12

3*12 = 36

answer: the larger number is 36.

5 0
3 years ago
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What is the answer to this 2x - 5 = 7
SCORPION-xisa [38]

Step-by-step explanation:

2x - 5 = 7

2x = 7 + 5

2x = 12

x = 12 / 2

x = 6

Hope it will help :)

7 0
3 years ago
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