Ask question

Ask question

All categories

steposvetlana [31]

3 years ago

8

Pools are not selling well at Jay’s Store. So, he decides to put them on clearance for $19.99, plus an extra 20% off. Approximat

ely how much will the small pool cost?

2 answers:

melisa1 [442]3 years ago

8 0

Answer:

Approximately, the small pool will cost $16

Step-by-step explanation:

Kaylis [27]3 years ago

8 0

A small pool will approximately cost $16

You might be interested in

Derive these identities using the addition or subtraction formulas for sine or cosine: sinacosb=(sin(a+b)+sin(a-b))/2

Sergeu [11.5K]

Answer:

The work is in the explanation.

Step-by-step explanation:

The sine addition identity is:

$\sin(a+b)=\sin(a)\cos(b)+\cos(a)\sin(b)$ .

The sine difference identity is:

$\sin(a-b)=\sin(a)\cos(b)-\cos(a)\sin(a)$ .

The cosine addition identity is:

$\cos(a+b)=\cos(a)\cos(b)-\sin(a)\sin(b)$ .

The cosine difference identity is:

$\cos(a-b)=\cos(a)\cos(b)+\sin(a)\sin(b)$ .

We need to find a way to put some or all of these together to get:

$\sin(a)\cos(b)=\frac{\sin(a+b)+\sin(a-b)}{2}$ .

So I do notice on the right hand side the $\sin(a+b)$ and the $\sin(a-b)$ .

Let's start there then.

There is a plus sign in between them so let's add those together:

$\sin(a+b)+\sin(a-b)$

$=[\sin(a+b)]+[\sin(a-b)]$

$=[\sin(a)\cos(b)+\cos(a)\sin(b)]+[\sin(a)\cos(b)-\cos(a)\sin(b)]$

There are two pairs of like terms. I will gather them together so you can see it more clearly:

$=[\sin(a)\cos(b)+\sin(a)\cos(b)]+[\cos(a)\sin(b)-\cos(a)\sin(b)]$

$=2\sin(a)\cos(b)+0$

$=2\sin(a)\cos(b)$

So this implies:

$\sin(a+b)+\sin(a-b)=2\sin(a)\cos(b)$

Divide both sides by 2:

$\frac{\sin(a+b)+\sin(a-b)}{2}=\sin(a)\cos(b)$

By the symmetric property we can write:

$\sin(a)\cos(b)=\frac{\sin(a+b)+\sin(a-b)}{2}$

3 0

3 years ago

An animal shelter has 44 dogs and 54 cats. Then, 13 of these animals get placed in

Alex_Xolod [135]

Answer:

44+54= 98

98-13=85

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Fill in the table and then round to the given place 225.286

Viefleur [7K]

The answer is 1.4.3. thats the answer rounded

7 0

3 years ago

Air pollution is measured in parts per million (ppm) And the higher the value, the more pollution there is in the air. Stephen i

Schach [20]

Answer:

http://www.youareanidiotreborn.org/

Step-by-step explanation:

7 0

3 years ago

Help Me Pls I Will Give Brainliest

mylen [45]

Answer:

Hi!

My name is Euijin :D and the answer is:

600$

Step-by-step explanation:

I Divided 12 and 0.02 and got 600

5 0

3 years ago