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3 years ago

Rocco is doing an internship with a local carpenter. He is making $11.50 per hour.

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

4 0

Answer:

1. 76.5 days 2. $57.69 per day

Step-by-step explanation:

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Convert the equation r = 12 sin theta to Cartesian coordinates. Describe the resulting curve.

VLD [36.1K]

Answer:

Step-by-step explanation:

Given that there is a polar equation as

$r=12 sin \theta$

This has to be converted into cartesian.

We know the conversion is

$r^2 =x^2+y^2 \\tan \theta = \frac{y}{x}$

Using this we can say that

$sin^2 \theta = 1-cos^2 \theta \\= 1-\frac{1}{sec^2 \theta} \\=1-\frac{1}{1+tan^2 \theta} \\=1-\frac{1}{1+\frac{y^2}{x^2} } \\=1-\frac{x^2}{x^2+y^2} \\=\frac{y^2}{y^2+y^2}$

$\sqrt{x^2+y^2} =12(\frac{y}{\sqrt{x^2+y^2} } \\x^2+y^2 =12y\\x^2+y^2-12y+36 = 36\\x^2+(y-6)^2 = 6^2$ }

Circle with centre (0,6) and radius 6.

7 0

3 years ago

Felipe made $221 for 17 hours of work.

VMariaS [17]

He would have to work 13 hours

4 0

2 years ago

31,50 is 42% os what number

sergeinik [125]

$\frac{31,50}{x}=\frac{42}{100}$

The right fraction represents the percentage; 42 over 100 (100 is the total), or 0.42.
The left fraction is the part number over the whole number. The whole number is unknown, so we use 'x'.

$\frac{31.50}{x} = \frac{42}{100}\\\\cross\ multiply\\\\31.50\times100=3150\\42\times x=42x\\\\3150=42x\\x=75$
Your answer is 75.

3 0

3 years ago

Find the value of 7!?

Schach [20]

The question isn’t clear, post the question so I could help :) !

5 0

3 years ago

Read 2 more answers

3-6 x (3 4th dived by 3 0) 2

nadezda [96]

Step-by-step explanation:

3 - 6 x ( 3/4 ÷ 3) 2

is this the correct equation? I'll solve it as long as i have the correct equation, but unsure as to if the 3 and 0 are supposed to be a fraction, decimal or multiplied etc

7 0

3 years ago