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yKpoI14uk [10]
2 years ago
15

In the following expression, both A and B are variables that can take positive values.

Mathematics
1 answer:
krok68 [10]2 years ago
7 0

I think the answer is A and C!

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if j is 21 inches, k is 12 inches, and angle M measures 62 degrees, then find m using the Law is Cosines. round your answer to t
AURORKA [14]

Answer:

18.7

Step-by-step explanation:

The Law of Cosines is c^2=a^2+b^2-2ab cos(C), where c is the unknown side length of a triangle, a and b are the remaining two side lengths, and C is the angle opposite to side c. To answer this question just plug in the known values:

m^2=21^2+12^2-2(21)(12) cos(62)

Simplify:

m^2=441+144-504 cos(62)

m^2=585-504 cos(62)

m=\sqrt{585-504cos(62)}

m≈18.665...

When rounded to the nearest tenth, m=18.7

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3 years ago
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Hi i am having trouble dividing decimals, im not really sure how to devide at all i keep forgeting.
kolbaska11 [484]
If You know how to do long division then... You move the decimal that’s outside the house to where it’s not there no more then divide . Or turn the decimals into Fractions and do the reciprocal.
5 0
3 years ago
Help again please...
xeze [42]

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A tropical storm has been moving at 15 miles per hour for the past two days. Bess recorded that the storm moved 135 miles yester
Allushta [10]

Answer:

Bess has been keeping track of the storm for 14 hours.

Step-by-step explanation:

The tropical storm has been moving at 15 miles per hour.

Bess recorded that the storm moved 135 miles yesterday and 75 miles today. Total distance covered by storm is

135+75=210

The relationship between distance speed and time is defined as

speed=\frac{distance}{time}

15=\frac{210}{time}

time=\frac{210}{15}

time=14

Therefore, Bess has been keeping track of the storm for 14 hours.

8 0
3 years ago
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