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BartSMP [9]
3 years ago
13

Amelia practices the piano 980 minutes in 4 weeks. At what rate did she practice, in minutes per day?

Mathematics
2 answers:
den301095 [7]3 years ago
8 0

Answer:

35

Step-by-step explanation:

980 divided by 28 (days in a month)

adoni [48]3 years ago
4 0

Answer:

35 minutes a day.

Step-by-step explanation:

4*7=28

980/28=35

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lyudmila [28]

Answer:

x= 1, 4

Step-by-step explanation:

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4 0
2 years ago
I need to know what the ansswer is to this we are doing pemdas
mamaluj [8]

Answer:

18

Step-by-step explanation:

10-4+6(4-2)

10-4+6(2)

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8 0
3 years ago
A truck weighing 150kN and travelling at 2m/sec impacts with a buffer
FrozenT [24]

The maximum compression of the spring is 0.276 m

Step-by-step explanation:

First of all, we calculate the spring  constant of the spring, by using Hooke's law:

F=kx

where

F = 10 kN = 10,000 N is the force applied

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k is the spring constant

Solving for k,

k=\frac{F}{x}=\frac{10,000}{0.0125}=8\cdot 10^5 N/m

When the truck impacts with the spring, all the kinetic energy of the truck is converted into elastic potential energy of the spring, so we can write

\frac{1}{2}mv^2=\frac{1}{2}kx^2 (1)

where

m is the mass of the truck

v = 2 m/s is the initial speed of the truck

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x is the compression of the spring

The mass of the truck can be found from its weight:

m=\frac{W}{g}=\frac{150,000 N}{9.81 N/kg}=15,290 kg

So now we can re-arrange eq.(1) to find the compression, x:

x=\sqrt{\frac{mv^2}{k}}=\sqrt{\frac{(15,290)(2)^2}{8\cdot 10^5}}=0.276 m

Learn more about kinetic energy:

brainly.com/question/6536722

#LearnwithBrainly

6 0
3 years ago
Add the two expressions <br> -4.2x+3 and 2.5x-6<br><br><br> please help me with this
dalvyx [7]

-1.7×-6 is the answer. Hope this helps.

6 0
3 years ago
Read 2 more answers
What integer is closet to n​
11Alexandr11 [23.1K]

Answer:

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7 0
3 years ago
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