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3 years ago

13

I need help ok I need to find the length of ab

1 answer:

Leokris [45]3 years ago

6 0

I think you forgot to add a picture

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A dog trainer is trying to find a triangular area behind his house that encloses 1800 square feet for his dog to run. He has the

aliina [53]

Answer:

$C = (30,500)$

Step-by-step explanation:

Given

$Area = 1800ft^2$

$A = (6,0)$

$B = (0,25)$

$C(x,y) = (30,y)$

Required

Determine the coordinates of C

The area of triangle is calculated as thus:

$Area = \frac{|A_x(B_y - C_y) + B_x(C_y - A_y) + C_x(A_y - B_y)|}{2}$

This gives:

$1800= \frac{|6(25 - y) + 0(y - 0) + 30(0 - 25)|}{2}$

$1800= \frac{|6(25 - y) + 30(0- 25)|}{2}$

$1800= \frac{|6(25 - y) + 30(-25)|}{2}$

$1800= \frac{|150 - 6y -750 |}{2}$

$1800= \frac{|150 -750- 6y |}{2}$

$1800= \frac{|-600- 6y |}{2}$

Multiply through by 2

$2 * 1800= |-600- 6y|$

$3600= |-600- 6y|$

$3600= |-(600+ 6y)|$

$3600= 600+ 6y$

Solve for 6y

$6y = 3600 - 600$

$6y = 3000$

Solve for y

$y = 3000/6$

$y = 500$

Hence:

The point is:

$C = (30,500)$

7 0

3 years ago

What is the cosine of angle P?

never [62]

The cosine of an angle is defined as the sine of the complementary angle. The complementary angle equals the given angle subtracted from a right angle, 90°. For instance, if the angle is 30°, then its complement is 60°. Generally, for any angle θ, cos θ = sin (90° – θ).

3 0

3 years ago

What is -3(2 - x)= 9x <br><br>I really need help on this one.

PolarNik [594]

X=-1

Reason
-3(2-x)=9x
Distributive Property
-6+3x=9x
Subtract 3x on both sides
-6=6x
Divide by 6 on both sides
-1=x

7 0

3 years ago

dmitriy555 [2]

If the lines are parallel, they have no solutions because they never touch

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3 years ago

Read 2 more answers

Brandon can swim 1/4 mile in 1/6 hour. At this rate, how far can we swim in one hour?

AfilCa [17]

So easy.....it is 1 mile and half

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3 years ago