Answer:
37
Step-by-step explanation:
Let the answer be represented by xy where x is the tens digit and y is the ones digit.
The ones digit of a two-digit number is 4 more than the tens digit.
y = x+4
the sum of that number and the number reversed is 110
xy+yx = 110
Lets rewrite this vertically
x y
y x
------
1 1 0
We can replace y with x + 4 I will put the 4's in a separate row up top for ease of writing
4 4
x x
x x
------
1 1 0
Taking the one's column, we get
2x +4 = 0 and I will assume there is a carry of 10
so rewriting
2x+4 = 10
Subtract 4 from each side
2x+4 -4 = 10-4
2x =6
Divide each side by 2
2x/2 = 6/2
x=3
We still need to find y
y = x+4
Substituting in x
y = 3+7
y =7
The number is xy
37
The length of the lake as represented in the triangle ABC is 271.3 meters.
<h3>What is an equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Sine rule is used to show the relationship between the sides and angles of a triangle.
∠A + ∠B + ∠C = 180° (angles in a triangle)
60 + 43 + ∠C = 180
∠C = 77°
Using sine rule:
519/sin(77) = BC / sin(60)
BC = 461.3 m
x = 461.3 - 190 = 271.3
The length of the lake as represented in the triangle ABC is 271.3 meters.
Find out more on equation at: brainly.com/question/2972832
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Answer:
1 x 12
3 x 4
2 x 6
Step-by-step explanation:
multiply them and you get 12 voila
You probably just have to make sure all the sides are the same length. For example, you would have to make sure that the length and width are 5 inches exactly. Just a guess.
