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3 years ago

7

A 30 ft wire stretches from the top of a light pole diagonally to the ground. The light pole is 10 feet high. What is the angle

the wire makes with the ground?

1 answer:

suter [353]3 years ago

8 0

Answer:

The correct answere would be 19 degrees after solving for the length of the wire plus the diagnal of the ground.

Step-by-step explanation:

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300 of the 500 girls and 450 of the 600 boys attend the spring carnival. Which group has the greatest percent attendance

Snowcat [4.5K]

The boys do because 300 is 200 away from 500 450 is only 150 away from 600

3 0

3 years ago

Select the correct answer. Solve the following equation for x.

Troyanec [42]

Answer:

the answer is D

6 0

3 years ago

A circle is centered at the point (-3, 2) and passes through the point (1, 5). The radius of the circle is ___ units. The point

mixas84 [53]

Answer:

The radius is 5 units

(-7,-1) and (-7,5) lies on the circle

Step-by-step explanation:

Use the distance formula to find the distance between the center and the given point that gives you the radius.

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The center is (-3,2) and the point on the circumference is (1,5)

$r=\sqrt{(1--3)^2+(5-2)^2}$

$r=\sqrt{(4)^2+(3)^2}$

$r=\sqrt{16+9}$

$r=\sqrt{25}$

$\therefore r=5$

The radius is 5 units.

The equation of the circle is given by:

$(x--3)^2+(y-2)^2=5^2$

$(x+3)^2+(y-2)^2=25$

When x=-7, we obtain y by substituting into the equation of the circle:

$(-7+3)^2+(y-2)^2=25$

$(-4)^2+(y-2)^2=25$

$16+(y-2)^2=25$

$(y-2)^2=25-16$

$(y-2)^2=9$

$y-2=\pm \sqrt{9}$

$y=2\pm 3$

$y=-1$ or y=5

Therefore (-7,-1) and (-7,5) lies on the circle.

6 0

4 years ago

Make u the subject of the relation.<br>1.wx+yz=uv-2wx

valentinak56 [21]

Answer:

Step-by-step explanation:

wx+yz=uv-2wx

uv = wx + yz + 2wx

u = ( wx + yz + 2wx ) / v

hope it helps :)

3 0

3 years ago

9. If the area of a square is given by the polynomial 4x2 – 36x + 81, then which of the

AnnyKZ [126]

Answer:

If the area of a square is given by the polynomial 4x2 – 36x + 81, then which of the

following expressions represents the length of one side of the square?

A 2x -9

B

2x + 9

C 4x - 18

D 4x + 18

Step-by-step explanation:

answer 4x+18

3 0

3 years ago