Homework help answering math questions

Mathematics

1 answer:

Margarita [4]3 years ago

4 0

Boys in cool places it’s just amazing James Charles

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Seaside Bike Shop rents bikes for $10 plus 54 per hour. Jack paid $30 to rent a bike. Which equation, when solved for x, gives t

lozanna [386]

Y=54x+10
If he paid $30 it would be
30=54x + 10

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3 years ago

What persent is 3/250 also pls enculde expliantion

Firlakuza [10]

1.2%

3/250 = 0.012

0.012 x 100 = 1.2%

8 0

3 years ago

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If angle a = (7x-27) and angle b = (3x + 29) , then find the value of x.

SpyIntel [72]

Answer:

x = 14

Step-by-step explanation:

7x - 27 = 3x + 29

Subtract 3x from both sides;

4x - 27 = 29

Add 27 to both sides;

4x = 56

Divide both sides by 4;

x = 14

6 0

3 years ago

Find the product of z1 and z2, where z1 = 2(cos 80° + i sin 80°) and z2 = 9(cos 110° + i sin 110°)

nekit [7.7K]

ANSWER

$z_1 z_2=18( \cos( 190 \degree ) + i \sin( 190 \degree) )$

EXPLANATION

The given complex numbers are;

$z_1 = 2( \cos(80 \degree) + i \sin(80 \degree) )$

and

$z_2= 9( \cos(110 \degree) + i \sin(110 \degree) )$

Recall the binominal identity for complex numbers in polar form.

$z_1 z_2=r_1 r_2( \cos( \theta_1 +\theta_2) + i \sin(\theta_1 +\theta_2) )$

We apply this property to obtain,

$z_1 z_2=2 \times 9( \cos( 80 \degree + 110 \degree ) + i \sin(80 \degree + 110 \degree) )$

$z_1 z_2=18( \cos( 190 \degree ) + i \sin( 190 \degree) )$

4 0

4 years ago

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((MATHS FORM2 CHAPTER 5 CIRCLE)). HELPPPPPPPPPP I WILL MARK AS BRAINLIEST PLEASE SHOW YOUR WORKING :-)

katrin2010 [14]

Answer:

Step-by-step explanation:

strategy: Find the area of the entire dartboard, then subtracted the inner circle from that whole. we will have the entire outer circle, so divide that by 2 for half of it. Next divide the inner circle by 4 . Then add that to the outer circle answer from above.

whole circle = $\pi$ * $20^{2}$ = 1257.142857 $cm^{2}$