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marin [14]
3 years ago
6

¿Cuántas esferas hay en la figura 20?

Mathematics
1 answer:
scoundrel [369]3 years ago
8 0

Answer:

418

Step-by-step explanation:

fig 2 = fig 1 + 5

fig 3 = fig 2 + 7 or fig 1 +5+7   16

1  2  3   4  5   6    7  8   9  10   11   12   13  14   15   16   17  18  19  20

4+5+7+9+11+13+15+17+18+19+21+23+25+27+29+31+33+35+37+39

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What is the value of x if x/4+2=15<br>Help!​
NNADVOKAT [17]

Answer:

Step-by-step explanation:

because i don't know if the 2 is with the 4 or not I have calculated both.

x/4 + 2 = 15

<=> x/4 = 13

<=> x = 13.4 = 52

x/(4+2) = 15

<=> x/6 = 15

<=> x = 6.15 = 90

8 0
2 years ago
Read 2 more answers
Please answer and say what a perfect root is pls i didnt get time to study and this is for 15 points
mixer [17]

Answer:

81

Step-by-step explanation:

9 x 9 = 81

So, 81 is the perfect square.

5 0
2 years ago
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Helen got a 7% reduction in the price of a pair jeans that are normally $32. What is the approximate percent in the price?
adoni [48]

A percentage is a way to describe a part of a whole. The approximate percent decrease in the price is 21.87%, thus, the correct option is B.

<h3>What are Percentages?</h3>

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Given the reduction in the price is $7, while the original cost is $32. Therefore, the approximate percent decrease in the price is,

Percentage decrease = 7/32  × 100%

                                     = 21.87%

Hence, the approximate percent decrease in the price is 21.87%, thus, the correct option is B.

The correct question is:

Helen got a $7 reduction in the price of a pair of jeans that are normally $32. What is the approximate percent decrease in the price?

The percent decrease is approximately 15%.

The percent decrease is approximately 21%.

The percent decrease is approximately 43%.

The percent decrease is approximately 78%

Learn more about Percentages:

brainly.com/question/6972121

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7 0
1 year ago
Adrian has 5 times as many stickers as Derrick. If Adrian has 325 stickers, how many stickers does Derrick have?
Arte-miy333 [17]

Answer: 65

Step-by-step explanation:

65 x 5= 325

5 0
2 years ago
Evaluate 25 - 5e + 3/f when e = 4 and f = 3
Vitek1552 [10]
The answer is
4 I hope this helps 

5 0
3 years ago
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