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Ratling [72]
3 years ago
11

Solve for [x]. The pair of polygons are similar. The scale factor from A to B is 9:10​

Mathematics
1 answer:
brilliants [131]3 years ago
6 0

Answer:

9

Step-by-step explanation:

if scale factor is 3/5, then

(x+12):35=3:5, ⇒

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In the figure below, the segment is parallel to one side of the triangle. The ratio of 12 to y is 1:2 1:3 1:4 2:3
Brrunno [24]

Answer:

Option B. 1 : 3

Step-by-step explanation:

There are two triangles shown in the picture attached ΔABC and ΔCD.

In these triangles sides AB and DE are parallel and BC is transverse line so ∠ABC = ∠EDC (corresponding angles)

Similarly AC is transverse to parallel lines AB and DE, so ∠BAC = ∠DEC (corresponding angles)

∠ACB is common in both the triangles.

Therefore ΔABC and ΔDEC are similar.

We know in similar triangles corresponding sides are in the same ratio.

\frac{AB}{ED}=\frac{AC}{EC}

\frac{y}{12}=\frac{30+15}{15}=\frac{45}{15}=3:1

Therefore ratio of y and 12 is equal to 3 : 1

Or ratio of 12 to y is 1 : 3

Option B is the answer.

7 0
3 years ago
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List 5 numbers, so that
Neporo4naja [7]

1, 3, 5, 7, 9. You could continue on with this pattern forever by adding two to each previous number and it would average out correctly.

5 0
3 years ago
The expression 100n2 – 1 is equivalent to
Lerok [7]
I hope this helps you

6 0
3 years ago
The population of Greenville is currently 50,000 and declines at a rate of 1.2% every year. This models:
astraxan [27]

Answer:

Every year they are losing 600 people a year.

Step-by-step explanation:

You take 50,000/100= 500 x 1.2=600

6 0
3 years ago
Need help with this..
Marina86 [1]

Answer:

17

Step-by-step explanation:

1st step is 2c really will be 2 * 4 = 8

2nd step is ab really will be 3*5= 15

3rd step is 3d really will be 3* 2= 6

so your answer will be 17

8 0
3 years ago
Read 2 more answers
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