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liraira [26]
3 years ago
11

I just need to know the answers for number 3. I don’t understand how to do it. Thank u sm!

Mathematics
1 answer:
Otrada [13]3 years ago
6 0

Answer:

Step-by-step explanation:

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A triangle has vertices at (3,2),(3,6),(7,2) find the area of the triangle
yawa3891 [41]

Answer:

  8 square units

Step-by-step explanation:

The base is on a horizontal line. The points are 7-3 = 4 units apart.

The side perpendicular to the base is a vertical segment 6 -2 = 4 units long.

The area is ...

  A = 1/2bh

  A = 1/2(4 units)(4 units) = 8 units²

The area of the triangle is 8 square units.

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It is effectively half of a square that is 4 units on a side. 1/2(4²) = 8.

7 0
2 years ago
Which system is equivalent to 3x^2 - 4y^2 = 25
Archy [21]

For this case we have the following system of equations:

3x ^ 2 - 4y ^ 2 = 25\\-6x ^ 2 - 2y ^ 2 = 11

We can write a system of equivalent equations.

For this, it is enough to multiply one of the two equations by a scalar.

Multiplying the equation 1 by 2, we have:

6x ^ 2 - 8y ^ 2 = 50

Therefore, the new system of equations is:

6x ^ 2 - 8y ^ 2 = 50\\-6x ^ 2 - 2y ^ 2 = 11

Answer:

A system that is equivalent is:

D) 6x ^ 2 - 8y ^ 2 = 50\\-6x ^ 2 - 2y ^ 2 = 11

4 0
3 years ago
Read 2 more answers
2. Solve for the x.<br> 8<br> 16<br> 7
olasank [31]

Answer:

Theres no equation here?

Step-by-step explanation:

3 0
3 years ago
You have a wire that is 29 cm long. you wish to cut it into two pieces. one piece will be bent into the shape of a square. the o
Nostrana [21]
C = circumference of circle
p = perimeter of square
c + p = 29
p = 29 - c

side of square = (29 - c)/4
radius of circle = c/(2pi)

a = side^2 + (pi)r^2

a = ((29 - c)/4)^2 + pi * (c/(2pi))^2

a = (1/16)(841 - 58c + c^2) + (c^2/(4pi^2)) * pi

a = 52.5625 - 3.625c + c^2/16 + c^2/(4pi)

Since the 2nd degree term has a positive coefficient is positive, this has a graph that is a parabola opening up. It has a minimum value.

We take the derivative of the area expression and set equal to zero to find the minimum circumference.

da/dc = -3.625 + c/8 + (c/(2pi)) = 0

c = 12.76

Answer: 12.76 cm
3 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIEST TO ANYONE WHO WANTS IT AFTER THEY ANSWER IT!!!!!!! PLEASE HELLP ME I NEED TO GET THE DONE STA
Aleksandr [31]
I think u have to Multiply the 100 and 0.30 and that would be 30
6 0
4 years ago
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