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lys-0071 [83]
2 years ago
12

What is the surface area of a cube that has edges 3 cm long

Mathematics
2 answers:
Bezzdna [24]2 years ago
4 0

Answer:

54

Step-by-step explanation:

multiply 3 by 3 to get the surface area of one of the squares that make up a cube. then since a cube has 6 sides multiply the result (9) by 6 in order to get 54

dimulka [17.4K]2 years ago
3 0

Answer:

9cm^2

Step-by-step explanation:

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Max tosses a Fair coin 3 times what is the probability of getting heads in the first two trials and Tails in the last trial
Gennadij [26K]
.5 * .5 *.5 = 1/8 
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the probability to have head is .5 so the probability of tails 1-.5 
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then the first time is head  
the second time is head 
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so 
.5 * .5 *.5 = 1/8 
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3 years ago
Which answer would be correct?<br><br> is it 7.23 or something else?<br><br> * ANSWER ASAP !!! *
vladimir2022 [97]
<h3>Answer: Choice B) 8.57</h3>

==================================================

Explanation:

The triangles are similar through the AA (angle angle) similarity rule. Note how the angle markers correspond and match up. Example: angle C and angle F both have triple angle markers to indicate these angles are congruent.

The corresponding sides pair up to form equal fractions. AB and DE form AB/DE which is equal to AC/DF, as these two sides correspond as well.

Therefore: AB/DE = AC/DF

Let's plug in the given values and isolate x

AB/DE = AC/DF

11/7 = (15+x)/15 ...... substitution

11*15 = 7*(15+x) ....... cross multiply

11*15 = 7*15+7*x ...... distribute

165 = 105+7x

165-105 = 105+7x-105 ..... subtract 105 from both sides

60 = 7x

7x = 60

7x/7 = 60/7 ............ divide both sides by 7

x = 8.57142857142858

x = 8.57 ..... rounding to the nearest hundredth

3 0
3 years ago
Read 2 more answers
Select the correct answer.
sergeinik [125]

Answer:

C. 1:27

Step-by-step explanation:

a²/b²=1/9 => a=1 and b=3

a³/b³=1³/3³=1/27

C. 1:27

8 0
3 years ago
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