3 years ago

1 + 4 x 3 + 1 x 5 = 66 this statement is false. How to use parentheses to fix this?

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

7 0

I got no clue, I tried many ways and didn’t get it

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A = (1/5)<br>b = (6/-3)<br>Work out 4a + b<br>

SVETLANKA909090 [29]

Answer:

-1.2

Step-by-step explanation:

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3 years ago

A student on a piano stool rotates freely with an angular speed of 2.85 rev/s . The student holds a 1.50 kg mass in each outstre

Vlad1618 [11]

Answer:r'=0.327 m

Step-by-step explanation:

Given

$N=2.85 rev/s$

angular velocity $\omega =2\pi N=17.90 rad/s$

mass of objects $m=1.5 kg$

distance of objects from stool $r_1=0.789 m$

Combined moment of inertia of stool and student $=5.53 kg.m^2$

Now student pull off his hands so as to increase its speed to 3.60 rev/s

$\omega _2=2\pi N_2$

$\omega _2=2\pi 3.6=22.62 rad/s$

Initial moment of inertia of two masses $I_0=2mr_^2$

$I_0=2\times 1.5\times (0.789)^2=1.867$

After Pulling off hands so that r' is the distance of masses from stool

$I_0'=2\times 1.5\times (r')^2$

Conserving angular momentum

$I_1\omega =I_2\omega _2$

$(5.53+1.867)\cdot 17.90=(5.53+I_o')\cdot 22.62$

$I_0'=1.397\times 0.791$

$I_0'=5.851$

$5.53+2\times 1.5\times (r')^2=5.851$

$2\times 1.5\times (r')^2=0.321$

$r'^2=0.107009$

$r'=0.327 m$

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3 years ago

Convert 60 miles per hour into meters per second

Svetllana [295]

1,609.35 meters are in a mile.
3,600 seconds are in an hour.

1,609.35meters x 60miles = 96,561 meters per hour
96,561meters per hour / 3,600seconds = 26.82 meters per second

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3 years ago

Which of the following is a linear function?

Andrews [41]

Your answer should be y=8x2

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3 years ago

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What is the value of x in the diagram below?

algol13

X = 3

10 + 12x = 15x + 1
10 = 3x + 1
9 = 3x
3 = x

6 0

3 years ago

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