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3 years ago

Make sense of problems. A recliner has an

Mathematics

1 answer:

KIM [24]3 years ago

5 0

Answer:

$382.50

Step-by-step explanation:

Step 1 ) Convert 15% to a decimal : 0.15

Step 2 ) Multiply that by amount (0.15×450=67.50)

Step 3 ) Subtract from amount (450−67.50)=$382.50

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Jim is trying to improve his speed on the track so he can qualify for the State Championships. As he is running, he goes from 70

kumpel [21]

Answer:

His acceleration is $\frac{1}{15}$ meters per seconds²

Step-by-step explanation:

Acceleration is the rate of change of the speed

The formula of acceleration is $a=\frac{v_{f}-v_{i}}{t}$ , where

$v_{f}$ is the final speed
$v_{i}$ is the initial speed
The unit of the acceleration is meters/second²

∵ Jim goes from 70 meters/minute (beginning speed) to

106 meters/minute (final speed) in 9 seconds

∴ His initial speed $v_{i}$ = 70 meters/minute

- Change it the meter per second

∵ 1 minute = 60 seconds

∴ $\frac{70}{(1)(60)}=\frac{70}{60}=\frac{7}{6}$ meters/second

∴ $v_{i}$ = $\frac{7}{6}$ meters/second

∵ His final speed $v_{f}$ = 106 meters/minute

- Change it the meter per second

∴ $\frac{106}{(1)(60)}=\frac{106}{60}=\frac{53}{30}$ meters/second

∴ $v_{f}$ = $\frac{53}{30}$ meters/second

∵ The time of the change of his speed is 9 seconds

∴ t = 9

∵ The formula of acceleration is $a=\frac{v_{f}-v_{i}}{t}$

- Substitute the values of t, $v_{i}$ and $v_{f}$ in the formula above

∴ $a=\frac{\frac{53}{30}-\frac{7}{6}}{9}=\frac{1}{15}$

∴ His acceleration is $\frac{1}{15}$ meters per seconds²

3 0

3 years ago

If the system given has parallel lines, what is the answer?

uysha [10]

We need to see the "given system".

7 0

2 years ago

Read 2 more answers

What is the solution to <br> (2.4*10^11)/(1.2*10^9) using scientific notation

loris [4]

xfjgrtjsrjdtyj

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8 0

3 years ago

At 9 o’clock in the morning, the temperature was 29 Fahrenheit it dropped 5 Fahrenheit each hour what was the temperature at 4 o

suter [353]

Answer:

-6 degrees fahrenheit

Step-by-step explanation:

7×5=35

29-35=-6

4 0

3 years ago

Help!!!!!!!!! Homework due on Monday <br> Don’t understand at all!!! Thank youuuu

ch4aika [34]

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3 years ago