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Margarita [4]
2 years ago
7

In the figure; Triangle ABC is isosceles with BC=AC . If ∠A = 70, find the values of x and y . Give reasons for your answer.

Mathematics
1 answer:
deff fn [24]2 years ago
7 0

Answer:

∠B = 70 and ∠C = 40

Step-by-step explanation:

The image is not loading for me but with isosceles triangles there will two angles that are the same and one different angle.

All the angles will add up to equal 180 degrees.

In this case the different angle would angle C as the two same lines meet at that point.

From this you can that angle A and B are the same, both 70, so angle C would be:

180 (all the angles of a triangle added together) - 70 - 70 = 40

I'm assuming that x and y are angles B and C as they are not stated so they would be: ∠B = 70 and ∠C = 40.

Here is a diagram to demonstrate this:

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aleksklad [387]
To simplify that question, you would normally say "20 is 80 percent of what number" 
To find the answer you must grab the number 20 and divide it by 80% or 0.8
20 ÷ 80% = 25
20 ÷ 0.8 = 25
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Work out the area of a parallelogram of base 5m and height 3m
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Kyle took out a seven-year loan of $8,000 loan from his bank. The bank charges an interest rate of 5 percent, compounded yearly.
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Assuming the loan is as described, seven-year loan, which means that Kyle does not repay a cent before seven years.

This is a compound interest problem where n=7 years, interest rate i=0.05, and present value P=8000.

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There are about 30.2 million small businesses in the u.s and about 30,000 other larger businesses. What percent of all businesse
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<h3>Answer:</h3>

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<h3>Step-by-step explanation:</h3>

STEPS:

  1. Find the total amount
  2. Find out what number of what we want to know the percentage of there are out of the whole amount there is. (Divide the percentage amount we want to find by the total amount)
  3. Turn into a percentage by multiplying by 100

Find the total sum

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Find the fraction that small businesses make up of the total

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Convert to percentage

0.9990 → % = 0.9990 × 100 = 99.90%

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