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dmitriy555 [2]
2 years ago
9

Help help please thanks

Mathematics
1 answer:
Helen [10]2 years ago
3 0

it is c or b but i think c it is not b

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Heron’s formula: Area = Triangle PQR has sides measuring 9 feet and 10 feet and a perimeter of 24 feet. What is the area of tria
VladimirAG [237]
Hello,

Let's assume a,b,c the 3 sides of the triangle.

a=9
b=10
c=24-a-b=5

p= \dfrac{a+b+c}{2} =12\\

S= \sqrt{p(p-a)(p-b)(p-c)} = \sqrt{12*3*2*7} = \sqrt{504} =22,4499...\approx{22}
4 0
3 years ago
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How do you solve 2(y + 1) – 2 = 4 + 2y - y
Elina [12.6K]

Answer:

y=4

Step-by-step explanation:

2(y+1)-2=4+y

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2y=4+y

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I'm lowkey bout to have a heart attack if I don't get a tutor :(
allochka39001 [22]

Answer:

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10x + 30 = 20 + 8x + 3x

10x + 30 = 20 + 11x

Applying the additive inverse property, we get,

10x + 30 - 10x - 20 = 20 + 11x - 10x - 20

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4 0
3 years ago
If x => y and y => z, which statement must be true?
Kruka [31]

The operator \geq is transitive, which means exactly that

x \geq y,\quad y\geq z \implies x \geq z

That's the only thing you can deduce from your statement.

6 0
3 years ago
A regular hexagon with side length 4 has the same area as a square. What is the length of the square?
svetlana [45]

Answer: The length of the square is 6.44

Step-by-step explanation:

By definition, the area of a Regular polygon can be calculated with the following formula:

A=\frac{s^2n}{4tan(\frac{180}{n})}

Where "s" the length of any side of the polygon and "n" is the number of sides .

According to the information given in the exercise, you know that:

s=4

Since an hexagon has six sides, you know that:

n=6

Therefore, its area is:

A_h=\frac{(4^2)(6)}{4tan(\frac{180}{6})}\\\\A_h=24\sqrt{3}

The formula to find the area of a square is:

A=s^2

Where "s" is the length of any side of the square.

Since that regular hexagon has the same area as this square, you can substituting the area calculated above into the formula for calculate the area of a square, and then solve for "s".

Then you get:

24\sqrt{3}=s^2\\\\\sqrt{24\sqrt{3}}=s\\\\s=6.44

7 0
3 years ago
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