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jonny [76]
3 years ago
11

On Wednesday, a local hamburger shop sold a combined total of 388 hamburgers and cheeseburgers. The number of cheeseburgers sold

was three times the number of hamburgers sold. How many hamburgers were sold on Wednesday?
Mathematics
1 answer:
marysya [2.9K]3 years ago
4 0
There were 1,164 Hamburgers sold on Wednesday.
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In aΔABC, if ∠B = 60° and the ratio of two sides is a : c = 2 : √3 + 1, then ∠A= ____.
UkoKoshka [18]

Answer:

∠A= 45°....

Step-by-step explanation:

To find  ∠A first we have to find the length of side B by cosine law:

b^2 = a^2 + c^2 – 2 a c cos B

b^2=(2)^2 +(√3 + 1)^2 - 2(2)(√3 + 1) cos 60

b^2 = 6

Taking square root at both sides:

√b^2 = √6

b= 2.45

Now we can calculate ∠A by sine law:

b / sin B = a / sin A

2.45 / sin 60 = 2 / sin A

sin A= 2* √3/2 /2.45

sin A = 2√3/2 * 1/2.45

sinA = 2√3/ 4.9

sin A = 0.7069

sin A = 0.707

A=45°

Thus ∠A= 45°....

4 0
3 years ago
What is the balance after one year on an investment of $20,000 earning 5.2% interest compounded annually?​ what is the answer​
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Answer:

1040

Step-by-step explanation:

20,000 is how much you have and you would multiply 20,000*5.2% or 20,000*.052 (converting a percent to a decimal.)

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lucy has $25 in her piggy bank. She plans to add $5 per week until she has a total of $75. (Let your variable be x).
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Answer:

75=5x+25

Step-by-step explanation:

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