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4 years ago

5

a store is having a sale with 10 % off everything. write a equation to show the sale prices s of any item given its regular pric

e r.

1 answer:

tiny-mole [99]4 years ago

7 0

Answer: s = 0.9 r

Step-by-step explanation:

Since 10% is given off , then the remaining 90% is the sales price.

that is

s = 90/100 X r

s = 0.9r

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Find m>X <br> 21.04<br> 22.62<br> 67.38<br> 68.96

valina [46]

Answer:

67.38 degrees

Step-by-step explanation:

Here, we want to find the value of the angle at X

We are going to use the appropriate trigonometric ratio here

From the question, the vertex X faces the side 12 and that makes the side the opposite

The side 13 faces the right angle and that makes it the hypotenuse

The trigonometric ratio that connects both is the sine

so we have that;

sine X = 12/13

X = arc sin (12/13)

X = 67.38

4 0

3 years ago

Please help me with this question

Tema [17]

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8 0

3 years ago

In the triangle ABC, B is the right angle. If sin A = 8/17, what is cos C?

nlexa [21]

<h3>Answer: 8/17</h3>

==========================================================

Explanation:

The rule is

If A+C = 90, then sin(A) = cos(C). We could also say cos(A) = sin(C).

I recommend drawing out the picture of what's going on. See below.

sin(A) = 8/17 has the opposite side 8 over hypotenuse 17.

cos(C) = 8/17 has 8 as the adjacent side now. The hypotenuse stays the same.

So that's why sin(A) = cos(C).

5 0

3 years ago

What is the unit rate for 6 pack soda for $7.96

Allisa [31]

7.96 / 6 = 1.33 <== unit rate

6 0

4 years ago

2.1x10 to the -3 power x 2x10 to the second power

ad-work [718]

Answer:

$4.2*10^{-1}$

Step-by-step explanation:

We want to simplify:

$2.1*10^{-3}\times 2*10^2$

We rewrite to get:

$2.1*2*10^2*10^{-3}\times10^2$

We now apply the laws of indices

$4.2*10^{-3+2}$

We simplify to get $4.2*10^{-1}$

We leave our final answer is scientific form.

The final answer is therefore:

$4.2*10^{-1}$

5 0

3 years ago