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Naya [18.7K]
3 years ago
15

What is 75 percent of 30?

Mathematics
2 answers:
Arturiano [62]3 years ago
7 0
So percent means parts out of 100 so 75%=75/100=3/4
3/4 of 30
'of' means multiply
3/4 times 30=90/4=45/2=22.5
22.5 is the answer (or 22 and 1/2)
iVinArrow [24]3 years ago
4 0
30/4 is 7.5 and 7.5 times 3 is 22.5 so 75% of 30 should be 22.5
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The gravitational force exerted by the planet Earth on a unit mass at a distance r from the center of the planet is:
jolli1 [7]

Answer:

Yes, F is a continuous function of r

Step-by-step explanation:

We are given that

When r<R

F(r)=\frac{GMr}{R^3}

r\geq R

F(r)=\frac{GM}{r^2}

Where M=Mass of the earth

R=Radius of earth

G=Gravitational constant

We have to find the function is continuous of r or not.

LHL

\lim_{r\rightarrow R-}\frac{GMr}{R^3}=\frac{GMR}{R^3}=\frac{GM}{R^2}

RHL

\lim_{r\rightarrow R+}\frac{GM}{R^2}=\frac{GM}{R^2}

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When a function is continuous at x=a

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8 0
3 years ago
The diffrence of a number m and 30 is 10
viktelen [127]
M - 30 = 10

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8 0
3 years ago
A school bus during morning pickups to calculate its average speed between 2.8 km and 4.2 km.
kifflom [539]

<u>Answer: </u>

Option (c)

The average speed between 2.8 km and 4.2 km is 42 km/h

<u>Explanation:</u>

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Therefore, the average speed between 2.8 km and 4.2 km is 42 km/hr

Hence, Option (C) is correct

4 0
3 years ago
Draw an area model to multiply 1.1 x 2.4
Lemur [1.5K]
1.1
×
2.4
____
 44 
+
 22
____
.66
I think this is it I did this when I was in 5th grade so I don't remember that much might wanna check with an adult.
6 0
3 years ago
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