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oksano4ka [1.4K]
3 years ago
14

Arthur earned $22.50 last night delivering lunches for his family's restaurant. He puts 30% of his earnings into his savings acc

ount. he then bought a magazine for $3.95 and a CD for $11.49. of the amount earned last night, how much money does arthur have left that is not in his savings account​
Mathematics
1 answer:
ira [324]3 years ago
6 0

Answer:

$4.26

Step-by-step explanation:

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Consider a particle moving around a circle with a radius of 38cm. It rotates from 10 degrees to 100 degrees in 11 seconds. Calcu
kifflom [539]

Step-by-step explanation:

Given that,

Radius of circle, r = 38 cm = 0.38 m

It rotates form 10 degrees to 100 degrees in 11 seconds i.e.

\theta_i=10^{\circ}=0.174\ rad

\theta_f=100^{\circ}=1.74\ rad

Let \omega is the angular velocity of the particle such that, \omega=\dfrac{\omega_f-\omega_i}{t}

\omega=\dfrac{1.74-0.174}{11}

\omega=0.142\ rad/s

We need to find the instantaneous velocity of the particle. The relation between the angular velocity and the linear velocity is given by :

v=r\times \omega

v=0.38\times 0.142

v = 0.053 m/s

So, the instantaneous velocity of the particle is 0.053 m/s. Hence, this is the required solution.  

6 0
3 years ago
Leo prepared 16 kilograms of dough after
tatuchka [14]

Step-by-step explanation:

16 kg= 8 hours (divide by 8 to find 1 hour how many kg)

2kg=1 hour ( multiply by 9 as we need to find 18 kg

so 9 hours=18kg

So it'll take 9 hours for 18 kg of dough to be made

Hope this helps!!!

Have a nice day:)

3 0
3 years ago
A 90% confidence interval for a proportion is found to be (0.62, 0.68). What is the sample proportion?
Ludmilka [50]

Answer:

B. 0.65

Step-by-step explanation:

Sample proportion is the point estimate of the population proportion which is at the centre of the interval

(0.62+0.68)/2

1.30/2

0.65

3 0
3 years ago
Read 2 more answers
What is the mean of 65.9, 80.8, 60.8, 46.5, and 64.3
vladimir2022 [97]

Answer:

63.66

Step-by-step explanation:

Mean=(65.9+80.8+60.8+46.5+64.3)/5

Mean=63.66

7 0
3 years ago
Convert 498,000 into scientific notation​
Paladinen [302]

Hello! The answer to your question would be as followed:

<u><em>4.98 x 10^5 </em></u>

8 0
3 years ago
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