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expeople1 [14]
3 years ago
8

An isosceles triangle has a base of 12 cm and legs measuring 18 cm. How wide is the base of a similar triangle with legs measuri

ng 22 cm?
Mathematics
1 answer:
Mama L [17]3 years ago
6 0
So in similar triangles the angles are the same, only the side lengths change so you have to use ratios to find this:
18:22
This is the ratio but it needs to be simplified.
Divide each side by 18 so that the right side is one:
1:1 2/9
now we use this ratio with 12cm where 12 is on the right. You multiply both sides by 12 and it becomes:
12:14 24/9
or
12:16 6/9
or 
12:16 2/3
Therefore the base of the second triangle is 16 2/3 cm

Hope this helps :)
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The total number of cupcakes were 300.
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3 years ago
HELPPP WILL MARK BRAINLYIST IF RIGHT
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550.92

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7 0
2 years ago
15. Find the value of x and y rounded to the nearest tenth.<br> X<br> 34<br> 45°<br> 30°<br> y
Ugo [173]

Answer:

x = 24.0

y = 46.4

Step-by-step explanation:

Let opposite side = z

Using trigonometry :

Sin 30 = z / 34

z = 0.5 * 34

z = 17

We find x :

Sin 45 = 17 / x

x * sin45 = 17

x = 17 / sin 45

x = 24.04

Let y = y1 + y2

y1 = 17 / tan45

y1 = 17

y2 = 17/tan30

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6 0
2 years ago
Solve using the substitution method<br> 4x-2y=8 <br> y=1/2x +2
bekas [8.4K]

Hello there! the answer would be x = 3/4.

You are given the two equations: 4x - 2y = 8 and y = 1/2x + 2. You are asked to solve via substitution. To do this, substitute the value of y in the second given equation into the first given equation, and solve using PEMDAS.

4x - 2(1/2x + 2) = 8 - Start by distributing 2 into (1/2x + 2).

4x - 1x + 4 = 8 - Combine like terms.

3x + 4 = 8 - Subtract 4 from both sides.

3x = 4 - divide both sides by 3.

x = 3/4. This is your final answer.

I hope this was helpful, have a great day! :)

7 0
2 years ago
Can you help me please(:
sergij07 [2.7K]
7,000,000 + 80,000 + 200 + 60 + 7. Your welcome! Hope that helps. You should seriously ask your teacher for help.

8 0
3 years ago
Read 2 more answers
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