Answer:
Triangle has three sides so u can dismiss 2nd easily
scalene triangle has 2 equal sides
so, 1st is the correct answer
Answer:
Each hot dog is worth 5.7
Each bun is worth 2.4
Step-by-step explanation:
3d + 2b = 21.9
2d + 5b = 23.4
multiply the first by 2 and the second by 3
6d + 4b = 43.8
6d + 15b = 70.2
the coefficeint of d is the same in both equations, so subtract the first from the second
11b = 26.4
divide
b = 2.4
each bun is worth 2.4
take the first equation and plug the price of buns in
3d + 2b = 21.9
3d + 2(2.4) = 21.9
3d + 4.8 = 21.9
3d = 17.1
d = 5.7
each hot dog is worth 5.7
A method you could use to do this more easily or check your answers would be to graph the fuctions used on a website like desmos
Given :96 13 13 96 .
Sings of operations are not visible in the given problem.
Let us take multiplication sign × first and then we will take plus sign.
Let us take multiplication sign × first.
96 × 13 = 13 × 96.
The number 96 and 13 just changed their positions.
Also, on changing those positions, the values of product doesn't change.
So, we can see that a*b=b*a property is being applied there.
a*b=b*a represents Commutative Property of Multiplication.
Therefore, 96 × 13 = 13 × 96 represents Commutative Property of Multiplication.
If we take plug sign in between, we would have expression
96+13 = 13+96.
Still on changing positions of numbers the values of sum remain same.
So, we can apply property represented by a+b=b+a.
And that is Commutative Property of Addition.
Therefore, 96+13 = 13+96 also represents Commutative Property of Addition.
Answer: k = 200/3
Step-by-step explanation:
If a variable, a varies directly with a variable, c, it means that as a increases, c increases and as a decreases, c decreases.
Also, If a variable, a varies inversely with a variable, b, it means that as a increases, b decreases and as a decreases, c increases.
The variable c varies directly with a and inversely with b. We would introduce a constant of variation, k. Therefore
a = kc/b
If c = 3/20 when a = 2 and b =5, then
2 = (k × 3/20)/5 = 3k/100
Cross multiplying, it becomes
3k = 100 × 2 = 200
k = 200/3
