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miv72 [106K]
3 years ago
6

You go to the video store and rent some DVDs for $8.50 and a video game for $3.69. While there, you buy a box of popcorn for $2.

31 and a candy bar for $1.50. Find the total cost of the items.
Mathematics
1 answer:
timofeeve [1]3 years ago
8 0
Hello there!

Answer: $16.00

Explanation: First you have to add up all cost of the items. You can do that however you like. Then wants you add them all up you get your answer.

8.50
+. 3.69
2.31
1.50
—————
16.00

Hope I helped you! :-)
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Prove the following identity <br><br><br> sin x(sec x+cscx)= tan x +1
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Answer:

Step-by-step explanation:

<u>________________________________________________________</u>

<u>FACTS TO KNOW BEFORE SOLVING :-</u>

  • <u></u>\sin x = \frac{1}{cosec \: x} \: \: or \: \: cosex \: x = \frac{1}{\sin x}<u></u>
  • <u></u>\cos x = \frac{1}{\sec x}  \: \:or \: \: \sec x = \frac{1}{\cos x}<u></u>
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<u>________________________________________________________</u>

In the question ,

L.H.S. = \sin x (\sec x + cosec \: x)

R.H.S. = \tan x + 1

Lets solve L.H.S. first.

\sin x (\sec x + cosec \: x)

=> \sin x( \frac{1}{\cos x} + \frac{1}{\sin x} )

=> \frac{\sin x}{\cos x} + \frac{\sin x}{\sin x}

=> \tan x + 1

∴ L.H.S. = R.H.S. (Proved)

3 0
3 years ago
The expression 7+7x is equivalent to the expression
lianna [129]

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x+1/7

Step-by-step explanation:

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David has a garden with dimensions 11 feet long x 9 feet wide. He wants to enlarge the garden to an area of 126 square feet. How
Anton [14]

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3 Feet

Step-by-step explanation:

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What is the vertex if the function f(x)=-x^2-2x-1
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Vertex=(-1,0)

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Use the vertex form, y=a(x−h)^2+k, to determine the values of a, h, and k.

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Sav [38]
S = sally C = Chris J = Joe
sally is one year older than 3 times the age of joe, so
s = 3j + 1
chris is 5 years younger than 6 times the age of jo, so
c = 6j - 5
sally and chris are the same age so
s = c so
3j + 1 = 6j - 5
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1 = 3j - 5
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6 = 3j or
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check
s = c
3(2) +1 = 6(2) - 5
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7 = 7 correct✅
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