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Tanya [424]
3 years ago
14

Simplify these calculations, leaving your answer in index form.

Mathematics
1 answer:
alexira [117]3 years ago
7 0
Dividing x5^5 / x5^5 is 1
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Solve the triangle.
Zolol [24]

∠A = 106.3°, ∠B = 20.6°, ∠C = 53.1°

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

In a ΔABC, the sides opposite to the angle A is a, angle B is b, and angle C is c. a = 60 , b= 22, c = 50

We can find any one angle by cosine rule,

a² = b² + c² - 2 bc cos (A)

60² = 22² + 50² - 2(22)(50) cos A

3600 = 484 + 2500 - 2200 cos A

3600 = 2984 - 2200 cos A

3600 - 2984 = -2200 cos A

616 = -2200 cos A

cos A = 616/ -2200 = -0.28

A = cos⁻¹ (-0.28) = 106.3°

Now we can use sine rule to find angle B as,

sin A/ a = sin B / b

sin  106.3° / 60 = sin B / 22

sin B = 22 × sin  106.3° / 60

 B = sin⁻¹ (22 × sin  106.3° / 60 ) = 20.6°

As we know the sum of angles in a triangle is 180°.

∠A + ∠B + ∠C = 180°

106.3° + 20.6° + ∠C = 180°

126.9° + ∠C = 180°

∠C = 180° - 126.9° = 53.1°

7 0
3 years ago
WILL GIVE BRAINLIEST
Montano1993 [528]

Step-by-step explanation:

Use the compound interest formula:

A = P( 1 + r/n)^nt

A is the amount at the end

P is the principal or original amount.

R is annual rate as a decimal (you have to convert)

N is the # of compounding periods in a year (quarterly means 4)

T is time in years

A = 500( 1 + 0.0475/4)^(4×20)

This would be $1285.64 when fully computed.

3 0
2 years ago
At the ice cream shop there are 14 shakes sold for every 6 malts. What is the ratio of malts to shakes? don't forget to simplify
svp [43]

Answer: The ratio is 6:14 or 6/14, which reduces to 3:7 or 3/7

Step-by-step explanation:

4 0
3 years ago
The difference between a number and 12 is 20
Vlad1618 [11]
If difference means adding then it would be 32. if it is subtracting then it would be -8
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3 years ago
Determine whether the number is a solution of the given inequality.
myrzilka [38]
The answer to the question is B -2 the other 2 are not correct
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3 years ago
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