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tia_tia [17]
4 years ago
10

11. The polygons are similar, but not necessarily drawn to scale. Find the value of a and b.

Mathematics
1 answer:
givi [52]4 years ago
7 0
Corresponding sides have the same ratio.
(2a -5)/25 = 18/30
2a -5 = 25*18/30 = 15
a = (15 +5)/2 = 10

(3b +1)/15 = 30/18
3b +1 = 15*30/18 = 25
b = (25 -1)/3 = 8

a = 10
b = 8
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Step-by-step explanation:

It is 13 because when 10 goes to 13 you add 3 so you add 3 to the other one

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Therefore the answer is 13 m. wide

4 0
3 years ago
At the supermarket Pryslide, 500ml bottles of shower gel cost $7 each. However, since the beginning of last week there has been
max2010maxim [7]

Answer:

I strongly believe that the question requires us to calculate the cost of one 500ml bottle of shower gel based on this special offer of buy 2 bottles get another for just $2.

The correct answer is $5.33

Step-by-step explanation:

From a buyer's point of view,a 500ml bottle of shower gel cost is the $7 multiplied by 2 bottles plus $2 multiplied by 1 bottle all divided by 3 bottles.

The rationale for the denominator is that the total number of bottles bought would then equal 3 bottles .

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Instead of a bottle costing $7,under the special arrangement a bottle would simply cost $5.33

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4 years ago
A motorcycle travels 3 and 1/8 miles in 2.5 minutes. Which of the following represents the rate, to the nearest mile, at which t
bonufazy [111]
The rate would be 75 miles in 1 hour.

Set up a proportion to solve this:
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The second ratio would be x miles in 60 minutes, or x/60.

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Cross multiply:
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5 0
3 years ago
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mihalych1998 [28]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
You draw three cards from a deck of 52 cards, replacing the drawn card and re-shuffling the deck between each draw. What is the
SIZIF [17.4K]

Answer:

42%

Step-by-step explanation:

just makes sence I think

4 0
3 years ago
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