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Vlad [161]
2 years ago
6

Need help quick!! Cant figure this out

Mathematics
1 answer:
sladkih [1.3K]2 years ago
5 0

Answer:

The average speed of the car, in miles per hour, from 17:30 to 19:42, is 119.167 meters per second.

Step-by-step explanation:

Physically speaking, average speed (\bar v), measured in miles per hour, is the distance travelled (\Delta s), measured in miles, divided by time (\Delta t), measured in hours. That is:

\bar v = \frac{\Delta s}{\Delta t} (1)

The time needed by the vehicle is:

\Delta t = 72\,min\times \frac{1\,h}{60\,min}

\Delta t = 1.2\,h

If we know that \Delta s = 143\,mi and \Delta t = 1.2\,h, then the average velocity of the car is:

\bar v = \frac{143\,mi}{1.2\,h}

\bar v = 119.167\,\frac{m}{s}

The average speed of the car, in miles per hour, from 17:30 to 19:42, is 119.167 meters per second.

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Suzette deposited $800 into a bank account earning simple interest of 2.5% each year. After 5 years, how much interest had her a
Blababa [14]

Answer:

\boxed {\boxed {\sf \$ 100.00}}

Step-by-step explanation:

The formula for simple interest is

I=prt

where <em>p</em> is the principal, <em>r </em>is the rate, and <em>t</em> is the time.

The principal, or initial amount is $800 and the time is 5 years The interest rate is 2.5%, but we must convert to a decimal.

Divide by 100 or move the decimal place two spots to the left.

  • 2.5/100=0.025       or          2.5 ⇒  0.25 ⇒ 0.025

Substitute the known values into the formula.

p= 800 \\r= 0.025 \\t= 5

I= (800)(0.025)(5)

Multiply.

I=20(5)\\I=100

After 5 years, Suzette's account has earned $100.00

8 0
2 years ago
Okay last one of these, 15 points xox​
Vanyuwa [196]

Answer:

<u>13.2 centimeters</u>

Step-by-step explanation:

<u>Finding the missing side</u>

  • (?)² + (9)² = (16)²
  • ?² + 81 = 256
  • ?² = 175
  • ? = √175
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1 year ago
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3 years ago
Answer as soon as you can.
omeli [17]

Answer:

Step-by-step explanation:

24cmsquare is the answer

vibhorpagare avatar

area of right angle triangle = ab/2 = 48/2 = 24

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\frac{7}{42}\ of\ 42\ is\ equal\ 7\\\\check:\frac{7}{42}\cdot42=\frac{7}{42}\cdot\frac{42}{1}=\frac{7}{1}=7
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