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3 years ago

If tan x=−1, and 90°

Mathematics

1 answer:

nadezda [96]3 years ago

3 0

Answer:

what?

Step-by-step explanation:

write rigth please!

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Which ordered pair (x, y) satisfies the system of equations? 1/2 x − 1/4 y = 10 1/8 x − 1/8 y = 19

zlopas [31]

Answer:

-36,-192

Step-by-step explanation:

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2 years ago

ILL GIVE BRAINLIEST TO THE CORRECT ANSER BUT ANSWER ASAP

gulaghasi [49]

Answer:

12 and 13

Step-by-step explanation:

I hope this helps! Have a lovely day!! :)

4 0

2 years ago

Read 2 more answers

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

$I_1\omega =I_2\omega _2$

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

$I_0'=1.397\times 0.791$

$I_0'=5.851$

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

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

$r'^2=0.107009$

$r'=0.327 m$

7 0

3 years ago

What will your balance be on an investment of $7000 at 2% for 4 years compounded annually.

e-lub [12.9K]

Your balance would be 35, I think

4 0

3 years ago

Find the mean of 81, 97, 99, 89, 91, 76 (round to the hundredths)

Marta_Voda [28]

Answer:

88.83

Step-by-step explanation:

To find the mean of a set of numbers is to find the average a set of numbers.

To solve for the mean you have to add all of the values together and divide that sum by the number of values there are.

Ex. 81, 97, 99, 89, 91, 76

81 + 97 + 99 + 89 + 91 + 76 = 533

533 / 6 = 88.83

↓

(number of values)

3 0

3 years ago