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Mashcka [7]
3 years ago
10

Please help i dont know how to solve

Mathematics
1 answer:
natulia [17]3 years ago
7 0

Answer:

shouldn't it be all the same answer since it looks like a equilateral triangle

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I'm stuck on this problem also
mash [69]
<span>The perimeter is 14.47
 
Since you have 3 vertices, the polygon you have is a triangle. The sides of the triangle will be XY, XZ, and YZ. Just use the pythagorean theorem to calculate the length of each side and then add the lengths together for the result. Side XY = sqrt( (-1-3)^2 + (3-0)^2) = sqrt(16+9) = sqrt(25) = 5 Side XZ = sqrt ( (-1-(-1))^2 + (3-(-2))^2) = sqrt(0+25) = sqrt(25) = 5 Side YZ = sqrt( (3-(-1))^2 + (0-(-2))^2) = sqrt(16 + 4) = sqrt(20) = 4.47 Now add the length of each side together 5 + 5 + 4.47 = 14.47</span>
8 0
3 years ago
11x + 4y = 32<br> x = -2y - 2
borishaifa [10]
The answer is y= -x/2 -1 solving for the Y
4 0
3 years ago
Let f(X) = X + 8 and g(X) = x^2 - 6x - 7 find f(g(2)).
Gennadij [26K]
So what you do is evaluate g(2) then plug that value in for x in f(x)

g(2)=2^2-6(2)-7
g(2)=4-12-7
g(2)=-15

now
f(-15)=-15+8
f(-15)=-7

f(g(2)=-7
4 0
2 years ago
Simplify the expression by arranging the steps in sequence based on the order of operations 1/6(30x+24)-1/7(63-7×)
alex41 [277]

Answer:

6x-5

Step-by-step explanation:

We apply distributive property to get rid of the first parenthesis, by multiplying each term inside by the factor 1/6:

\frac{1}{6} (30x+24)-\frac{1}{7} (63-7x)\\\frac{30}{6} x+\frac{24}{6} -\frac{1}{7} (63-7x)\\5x+4-\frac{1}{7} (63-7x)

now we get rid of the second parenthesis by multiplying the factor "-\frac{1}{7}" times each of the terms inside the parenthesis (notice here that this factor is negative , so it will flip the signs of the terms it multiplies):

5x+4-\frac{1}{7} (63-7x)\\5x+4-\frac{63}{7} +\frac{7}{7} x\\5x+4-9+x

Next we combine like terms:

5x+4-9+x\\5x+x+4-9\\6x-5

7 0
2 years ago
Find an equation of variation where y varies directly as x and y=500 when x=50
Bumek [7]
50 + k = 500 <span>because </span><span>x + k = y
50 + 450 = 500
 so the answer is 
50 + 450 = 500 or just 450</span>
3 0
3 years ago
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