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natali 33 [55]
3 years ago
15

Analyze the diagram below and complete the instructions that follow.

Mathematics
1 answer:
Jlenok [28]3 years ago
3 0

Step-by-step explanation:

scale \: factor =  \frac{7}{28}  =  \frac{1}{4}  \\

ratio \:of \:surface \:areas\\=\frac{2[5\times 7 + 7\times 3+3\times 5]}{2[20\times 28+ 28\times 12+12\times 20] }\\\\=\frac{[35 + 21+15]}{[560+ 336+240] }\\\\=\frac{71}{1136}\\\\=\frac{1}{16}\\\\= 1\: :\: 16

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Indicated operation
lutik1710 [3]
20✔️3 + 4✔️27
20✔️3 + 4✔️9 • 3
20✔️3 + 4 • 3 ✔️3
20✔️3 + 12✔️3
32✔️3.

The solution is 32✔️3.
4 0
3 years ago
Find the next 3 numbers in the pattern 3.5, 13, 41.5, 127, , , .
Vikki [24]
3 next number in the given pattern: 3.5 , 13, 41.5, 127, _______, _________, ________ <span>We have the first 4 given pattern, next is to find the next 3 consecutive numbers:
x = numbers we’re looking
g =given numbers

=> 3.5g + x = 13
=> 13g + x = 41.5
=> 41.5g + x = 127

Now, let’s remove the decimals, multiply by 2
=> 2(3.5) + 2x = 2(13)
=> 7 + 2x = 26

=> 2 (13) + 2x = 2(41.5)
=> 26 + 2x = 83

=> 2(41.5) + 2x = 2(127)
=>83 + 2x = 247

Now, we already have whole numbers. Next is to solve the value of x’s and g’s
2x = 26-7
26 + 26 = 7 = 83
19 + 26 = 83
19 = 57
g = 3

2x = 26 -7
2x = 26 – 7 (3)
2x = 26 – 21
2x = 5
x = 2.5

Now, let’s find the next 3 consecutive numbers
=> 127 (3) + 2.5 = 383.5
=> 383.5 (3) + 2.5 = 1153
=> 1153 (3) + 2.5 = 3461.5

The next 3 numbers are 383.5, 1153, 3461.5</span>



8 0
3 years ago
Read 2 more answers
If triangle DEC is congruent to triangle BEC,which is true by CPCTC?
inn [45]
Let's go through the possible answer choices one by one

A) BE is congruent to ED
This is true because "BE" and "ED" are formed by the first two letters of BEC and DEC respectively. The triangles are congruent, so the corresponding sides must be congruent. To name a segment, the order does not matter. Writing "DE" is the same as "ED".

B) AC is congruent to BD
False. Point A isn't mentioned at all. We don't know for sure how point A fits in. The statement may be true, or it could easily be false as well. We don't have enough info.

C) Angle BEC = angle DCE
False. The order of the letters is very important. For angle BEC, we have E in the middle so the vertex of the angle is at point E. For angle DCE, the vertex is at point C. If angle BEC = angle DCE, then E and C must correspond; however they don't. Back up at the top, it says "DEC is congruent to BEC", so we see that E corresponds to E, and C corresponds to C. 

D) angle BCA = angle BCD
False. Again we don't know anything about point A. The same issues come up as they did with choice B.

The only true result is choice A
8 0
3 years ago
1638+(426-7288+173 times6278)
zheka24 [161]
The answer to this is problem is

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6 0
2 years ago
Lurinda ordered some boxes of greeting cards online. The cost of the cards is $6.50n plus $3 where n is the number of boxes and
Anarel [89]
Multiply 6.60 with 8 then add 3
4 0
3 years ago
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