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RoseWind [281]
3 years ago
9

Can you find the number of triangles in the given figure?​

Mathematics
1 answer:
melomori [17]3 years ago
4 0

Answer:

20?

Step-by-step explanation:

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Alice had $4.80 left after spending 40 percent of her money on lunch, 20 percent of what was left after lunch on parking, and 50
Vitek1552 [10]

Answer:

$20

Step-by-step explanation:

We are given the percentages of how much she spent on each purchase but we need the percentage of what is left after each purchase. We calculate this by subtracting each percentage from 100% like so.

100% - 40% = 60%

100% - 20% = 80%

100% - 50% = 50%

Next we need to do is change the percentages into decimal format. We do this by moving the decimal 2 digits to the left. Therefore the percentages wasted are the following

60.0%   ⇔   0.60

80.0%   ⇔   0.80

50.0%   ⇔   0.50

Now that we have the percentages in decimal format we can calculate the total price (t) by retracing the spending process. The spending process was following.

t_{2} = 0.60t

t_{3} = 0.80t_{2}

4.80 = 0.50t_{3}

So we have to retrace by solving for t_{3}, then t_{2}, and finally (t)

4.80 = 0.50t_{3} ... divide both sides by 0.50

9.60 = t_{3}

9.60 = 0.80t_{2} .... divide both sides by 0.20

12 = t_{2}

12 = 0.60t  .... divide both sides by 0.60

20 = t

Finally we can see that the Total amount of money that Alice had before lunch was $20

8 0
3 years ago
What number is at this position ?
Katarina [22]
The answer is 2.5 because the point is at the middle. Hope this’ll help
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3 years ago
What is a congruent transformation?
erik [133]
In mathematics it’s another term for isometry
6 0
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Read 2 more answers
Express 4 4/9 as an improper fraction. Example please.
miskamm [114]
Simple...

you have: 4 \frac{4}{9}

To make this into an improper fraction-->>

1.) Multiply whole number by denominator

2.)Add the number you got plus the numerator

3.) Use the original denominator to finish your improper fraction

Example: 4\frac{4}{9}

4*9=36

36+4=40

\frac{40}{9}

Thus, your answer.
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3 years ago
What is x\3 so solve for x if it equals 90
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X= 270
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