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SSSSS [86.1K]
3 years ago
7

Torrey has $20 to buy a birthday present for her that she does this to buy a CD for $18 the sales tax is 7% does she have enough

money explain the reason
Mathematics
1 answer:
Effectus [21]3 years ago
8 0
No, because she will go over by .57 cents. So she won't be able to buy the gift. You can find the answer by dividing 18 by 7 and adding that answer to 18 to get the amount total you owe including tax. 
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Cosx+1/sin^3x=cscx/1-cosx
ANTONII [103]
<span> I am assuming you want to prove:
csc(x)/[1 - cos(x)] = [1 + cos(x)]/sin^3(x).

 </span>
<span>If we multiply the LHS by [1 + cos(x)]/[1 + cos(x)], we get:
LHS = csc(x)/[1 - cos(x)]
= {csc(x)[1 + cos(x)]/{[1 + cos(x)][1 - cos(x)]}
= {csc(x)[1 + cos(x)]}/[1 - cos^2(x)], via difference of squares
= {csc(x)[1 + cos(x)]}/sin^2(x), since sin^2(x) = 1 - cos^2(x).

 </span>
<span>Then, since csc(x) = 1/sin(x):
LHS = {csc(x)[1 + cos(x)]}/sin^2(x)
= {[1 + cos(x)]/sin(x)}/sin^2(x)
= [1 + cos(x)]/sin^3(x)
= RHS.

 </span>
<span>I hope this helps! </span>
8 0
3 years ago
If he pays $46.80 for one year. He receives one magazine each month for 12 months. Find the dollars he pays for each
pochemuha

Answer:

Each magazine costs 3.90

Step-by-step explanation:

Take the total cost and divide by the number of magazines

46.80/12

3.90

6 0
3 years ago
Read 2 more answers
Anyone understand this?
ohaa [14]

Answer:

yes you just have to solve for both x and y in the top system and then solve the other systems to find out which one has the same solutions

Step-by-step explanation:

hope this helps!

8 0
3 years ago
Write the equation for the absolute value function graphed below
Jobisdone [24]

Answer:

y = 2|x+3| -2

Step-by-step explanation:

1) slope = rise/run= 4/2 =2 - for the right line

2) y = 2|x| initial graph

3) It  is moved 3 units left

y = 2|x+3|

4) It moved 2 units down

y = 2|x+3| -2

3 0
2 years ago
Pls help I need it now pls
ratelena [41]

Answer:

um i would say C, im not really sure tho. Not my area of expertise

Step-by-step explanation:

6 0
3 years ago
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