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joja [24]
2 years ago
9

I need help lol with this problem pls help pls pls pls

Mathematics
1 answer:
Virty [35]2 years ago
5 0

Answer:

Step-by-step explanation:

For this triangle, since the angle is included between 2 given sides, the formula will be:

A =\frac{1}{2}ab*ac*sin(angleA)

Putting values where they belong:

A=\frac{1}{2}(10)(12)sin72

Do all that in your calculator (in degree mode, NOT radian!) to get

A = 57.1 square cm

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I got this from a different brainy member
7 0
3 years ago
I am thinking of a number i multiply by 11 and add 22 i get the same answer if i miltiply by 4 and add 113 whats my number
lesya [120]

Answer: 13

Step-by-step explanation:

Let the number that in thinking of be represented by x.

I multiply by 11 and add 22 will give the same answer as multiplying by 4 and adding 113. This.csn be firmed into an equation as:

(11 × x) + 22 = (4 × x) + 113

11x + 22 = 4x + 113

Collect like terms

11x - 4x = 113 - 22

7x = 91

x = 91/7

x = 13.

The number is 13

8 0
2 years ago
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andre [41]

Answer:

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