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tresset_1 [31]
4 years ago
11

The perimeters of two similar polygons are 20 and 28. One side of the smaller polygon is 4. Find the corresponding side of the l

arger polygon. 2 5 5 7
Mathematics
2 answers:
Ipatiy [6.2K]4 years ago
5 0
This is the concept of linear proportionality, the linear scale factor of the polygon given will be:
[perimeter of larger polygon]/[perimeter of smaller polygon]=[length of larger polygon]/[length of smaller polygon]
=28/20
=7/5
thus the length of the larger polygon will be given by:
7/5=x/4
thus;
7/5*4
=5.6
thus the length 5.6
AfilCa [17]4 years ago
4 0
The answer is what's been verified, you just have to turn 5.6 into a fraction. So the answer is 5 3/5. (5 and three-fifths)

Have a great day :)

-Fishtank
>(^8^)<
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How do you solve -4(7a+5)= —160
White raven [17]

-4(7a+5)= —160

distribute the -4 on the left hand side

-4* 7a + -4*5 = -160

-28a +-20 = 160

-28a -20 = -160

add 20 to each side

-28a-20+20 = -160 +20

-28a = -140

divide by -28 on each side

-28a/-28 = -140/-28

a = 5

Answer:  a=5


6 0
3 years ago
Read 2 more answers
What is the answer to this?
katrin [286]

Answer:

\huge\boxed{-28}

Step-by-step explanation:

We can substitute the given values of a, b, and c to find the value of this expression.

-4 | a + b - c|

-4 | 3 + (-2) - (-6)|

We know that <em>two negatives make a positive. </em>This means that -2 - (-6) will be the same this as -2+6

-4 | 3 + -2 + 6|

Adding a negative is the same as subtracting a positive.

\4 | 3-2+6|\\\\3-2+6 = 7

-4 \cdot 7 = -28

Hope this helped!

7 0
3 years ago
Read 2 more answers
Which expression is equal to 2x7x6?
krok68 [10]

Answer:

84

Step-by-step explanation:

First you multiply 2 and 7

Ans 14

Then you multiply 14 and 6

Ans 84

6 0
3 years ago
Find the value of x in the figure given that SU = 133.<br><br> A) 7<br> B) 9<br> C) 11<br> D) 8
Alekssandra [29.7K]

Answer:

The answer is 9 (B)

Step-by-step explanation:

I got 9 because you have to plug in answer (7, 9, 11, 8) in each equation than add them both together. I first plugged in 7 for x in the equation 9x-5. I got 58. I plugged in 7 for x in the equation 5x+12 and got 47. When I added both the answers together I got 105. The answer was to low because SU has to be 133. I plugged in 9 for x in both equations then added them both and got 133 for SU. I hope this helps.

4 0
3 years ago
Read 2 more answers
Miguel tells his teacher1/5 is the same as 20%. Which best justifies Miguel’s answer? a.5 goes into 100 twenty times, so 20% is
svetoff [14.1K]

Answer:

C. 5 goes into 100 twenty times, and 1 times 20 is 20

Step-by-step explanation:

Since, we know that when we multiply both numerator and denominator of a fraction by a same number then we obtain an equivalent fraction,

Here, the given fraction,

\frac{1}{5}

By the above statement,

\frac{1}{5}=\frac{1\times 20}{5\times 20}=\frac{20}{100}

Now,

a\%=\frac{a}{100}

\implies \frac{20}{100}=20\%

Hence,

\frac{1}{5}=20\%

Option C is correct.

3 0
3 years ago
Read 2 more answers
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