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Svetradugi [14.3K]
3 years ago
14

a collection of 27 coins consist of 20-cent and $2 coins, and has a value of $23.40. find the number of coins of each denominati

on
Mathematics
1 answer:
JulijaS [17]3 years ago
4 0
17 $0.20 coins = $3.40
10 $2.00 coins = $20.00

$20.00 + $3.40 = $23.40
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Alexandra [31]
Yes your answer would be correct!  :)
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Solve each triangle using the information provided. If necessary, round to the<br> nearest tenth.
Goryan [66]

Answer:

1) B = 66.5° c = 10.9

Step-by-step explanation:

I will do question one as an example. In general, for these questions you want to use the appropriate trigonometric ratios to solve for the variables and/or apply logic using rules regarding triangles. See attached image for all solving steps.

For side c, we can use Cosine of angle A for a ratio between 10 and c. When we write out the equation, we can solve for side c. So when we write it out, we get the equation:

cos23.5 = ¹⁰⁄c

c = ¹⁰⁄cos₂₃.₅

c = 10.9044 (make sure to round to the nearest tenth, which is one decimal place)

For angle B, since they have given two angles, you can solve for B since all angles of a triangle add up to 180 degrees.

So b = 180 - (90 + 23.5) = 180 - 113.5

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  • It is also possible to solve this using sine of angle B and solve it from there, but applying the theory this way is much simpler. (this is on the image if you're curious about it)

I hope this helps you with the other 3 questions.

4 0
3 years ago
Which of the scatterplots have no correlation? Check all that apply.
aalyn [17]

Answer:

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Step-by-step explanation:

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Find the value of x.
Rus_ich [418]

Answer:

Hey love! Answer: 129

Step-by-step explanation:

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lbvjy [14]
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