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vampirchik [111]
3 years ago
11

It takes painter A 3 hours to paint a certain area of a house. It takes painter B 5 hours to do the same job. How long would it

take them, working together, to do the painting job?
Mathematics
1 answer:
My name is Ann [436]3 years ago
5 0

Answer:

Step-by-step explanation:

<h3>First step is to read the question thoroughly and make sure you understand it alright. Second step is to get paper and a pencil and write down the question. Third step is to grab a calculator if you don't have one then try to use addition. Fourth step is to write down the problem which is 3 + 5 = 8 so that equals 8 as u can see. Fifth step is to write the answer and there is your answer hopefully i helped out thank you for having patients Have a Great Evening</h3>
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I need to turn this in in 2 hours please hurry
Nuetrik [128]

Answer:

  2) 162°, 72°, 108°

  3) 144°, 54°, 126°

Step-by-step explanation:

1) Multiply the equation by 2sin(θ) to get an equation that looks like ...

   sin(θ) = <some numerical expression>

Use your knowledge of the sines of special angles to find two angles that have this sine value. (The attached table along with the relations discussed below will get you there.)

____

2, 3) You need to review the meaning of "supplement".

It is true that ...

  sin(θ) = sin(θ+360°),

but it is also true that ...

  sin(θ) = sin(180°-θ) . . . . the supplement of the angle

This latter relation is the one applicable to this question.

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Similarly, it is true that ...

  cos(θ) = -cos(θ+180°),

but it is also true that ...

  cos(θ) = -cos(180°-θ) . . . . the supplement of the angle

As above, it is this latter relation that applies to problems 2 and 3.

6 0
2 years ago
HELP PLEASE!! which of the following represents a function?
PolarNik [594]
The answer would be A because each x only has one y. Hope that makes sense!
7 0
2 years ago
Read 2 more answers
Which equation represents a circle with the same radius as
sattari [20]

Answer :

(x+1)^2+(y-1)^2=4^2 and (x+1)^2+(y-1)^2=16

Step-by-step explanation:

Given : A circle with the same radius as  the circle shown but with a center at (-1.1).

To find : Which equation represents a circle ?

Solution :

The equation of a circle with center (h,k) and radius r is given by :

(x-h)^2+(y-k)^2=r^2

Here, we are given (h,k)=(-1,1)

and radius r=4 units

So, equation of circle will be :

(x-(-1))^2+(y-1)^2=4^2

(x+1)^2+(y-1)^2=4^2

or (x+1)^2+(y-1)^2=16

Therefore, the required equations of circle are

(x+1)^2+(y-1)^2=4^2 and (x+1)^2+(y-1)^2=16

7 0
3 years ago
What is the theme of the poem "Queen of the Cats"?
4vir4ik [10]

Answer:

Isu has a cat named Bashet. This one of the many names of the goddess Bast, queen of cats. He has siamese-type traos; his body has a ply tan ned hair, while his legs, tail, face and ears are so dark brown. Brown gradually blends into the most plida color. The cat just a normal cat, but Isu treats it with special reverence

Step-by-step explanation:

8 0
2 years ago
Julia went to the grocery store and purchased cans of soup and frozen dinners. Each
Troyanec [42]

Answer:

2f =c

350c + 500f = 4800

Step-by-step explanation:

Twice as many cans of soup as frozen dinners

All food combined contain 4800 (mg of sodium)

2f =c

350c + 500f = 4800

These are the systems of equations.

8 0
2 years ago
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