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inessss [21]
3 years ago
6

12. Solve this equation for A: A ÷ 2 = 4

Mathematics
2 answers:
sweet [91]3 years ago
5 0
A=8. Hoped this has helped you.
Sever21 [200]3 years ago
4 0
<em>To find the answer, just do the inverse. That is, do 4×2. 4×2=8 and 8÷4=2. So A=8.</em>
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3/5 divided by 1/3 please say how you get that answer
kodGreya [7K]
3/4 divided by 1/5 = 3 3/4

Hope that helps :)
6 0
3 years ago
The perimeter of a triangular field is 120m. Two of the sides are 21m and 40m.Calculate the largest angle of the field.
Mama L [17]

Answer:

the largest angle of the field is 149⁰

Step-by-step explanation:

Given;

perimeter of the triangular filed, P = 120 m

length of two known sides, a and b = 21 m and 40 m respectively

The length of the third side is calculated as follows;

a + b + c = P

21 m  + 40 m  + c = 120 m

61 m +  c = 120 m

c = 120 m - 61 m

c = 59 m

                         B

                     ↓            ↓  

                  ↓                          ↓

                ↓                                       ↓

            A →  →  → →  →  → →  → →    →    →  C

Consider ABC as the triangular field;

Angle A is calculated by applying cosine rule;

a^2 = b^2 + c^2 - 2bc \ Cos A\\\\Cos \ A = \frac{b^2 + c^2 - a^2}{2bc} \\\\Cos \ A = \frac{40^2 + 59^2 - 21^2}{2 \times 40 \times 59} \\\\Cos \ A = 0.983\\\\A = Cos ^{-1} (0.983)\\\\A = 10.6 \ ^0

Angle B is calculated as follows;

Cos \ B = \frac{a^2 + c^2 - b^2}{2ac} \\\\Cos \ B = \frac{21^2 + 59^2 - 40^2}{2 \times 21 \times 59} \\\\Cos \ B = 0.937\\\\B= Cos ^{-1} (0.937)\\\\B = 20.5 \ ^0

Angle C is calculated as follows;

Cos \ C = \frac{a^2 + b^2 - c^2}{2ab} \\\\Cos \ C = \frac{21^2 + 40^2 - 59^2}{2 \times 21 \times 40} \\\\Cos \ C = -0.857\\\\C = Cos ^{-1} (-0.857)\\\\C = 149\ ^0

Therefore, the largest angle of the field is 149⁰.

       

8 0
3 years ago
Three guinea pigs living in the same cage need at least 12 square feet of living spàce.Is a cage that measure 3 feet by 5 feet b
Arte-miy333 [17]
Yes, there is enough space . If the guinea pigs need 12 feet, and 5*3= 15 feet  then they have enough.
( idk if means 12 feet of living space for each or all 3 , but here i hope it helps :) )
8 0
3 years ago
Evaluate -3- (-4) - (-2) + 1.
Shtirlitz [24]

Answer:

4

Step-by-step explanation:

-3+4+2+1=4

8 0
3 years ago
Boat travel 27 miles in two hours how many miles travel in 1/2 hours
Sloan [31]

Answer:

6.75

Step-by-step explanation:

8 0
2 years ago
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