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3 years ago

7

If an electric circuit is not grounded, it is best to reach out and touch it to

1 answer:

astraxan [27]3 years ago

4 0

The answer is B because it is not safe to touch it

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A diver shines a flashlight upward from beneath the water at an angle of 46.5 degrees to the vertical.

My name is Ann [436]

<span><span>θi</span>=<span>sin<span>−1</span></span>(μsin<span>θr</span>)
=<span>sin<span>−1</span></span>(1.33×sin46.5)
=74.7degrees</span>

7 0

3 years ago

WILL GIVE MEDAL!! A flight of stairs is supported by two columns as shown. What is the distance from the base of the stairs to t

adell [148]

I saw the image. It formed 2 right triangles. 1 small and 1 big.
small triangle has a long leg of 4 feet and hypotenuse of 6 feet.
big triangle has a long leg of (x) and hypotenuse of 6 + 12 ft.

proportion:

4/6 = x / 18
4 * 18 = 6x
72 = 6x
72/6 = x
12 = x

The distance from the base of the stairs to the tallest column is 12 feet.

6 0

3 years ago

Please help me with this question

Hunter-Best [27]

Answer:

y = $\frac{1}{2}$ x + 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 2x + 2 ← is in slope- intercept form

with slope m = - 2

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{-2}$ = $\frac{1}{2}$

The line crosses the y- axis at (0, 1) ⇒ c = 1

y = $\frac{1}{2}$ x + 1 ← equation of line

5 0

3 years ago

⦁ Scott works as a delivery person for a shipping company. The graph shows a linear model for his delivery times on different da

BARSIC [14]

Answer:

(3, 21), (6, 12)
-3
y -21 = -3(x -3) ⇒ y = -3x +30
30 minutes; 3 minutes

Step-by-step explanation:

a) The two marked points have coordinates (days, minutes) = (3, 21) and (6, 12).

__

b) The slope is the vertical change (rise) divided by the horizontal change (run). For these two points, that is ...

rise/run = (12-21)/(6-3) = -9/3 = -3 = slope

__

c) The point-slope form of the equation for a line is ...

y -k = m(x -h) . . . . . . for slope m through point (h, k)

Using the first point and the slope we found, this is ...

y -21 = -3(x -3) . . . . . point-slope form

Add 21 and eliminate parentheses:

y = -3x +9 +21

y = -3x +30 . . . . . . . . collect terms; slope-intercept form

__

d) The initial time is the time corresponding to day 0, the value of y when x=0. It is 30 minutes.

The slope in part (b) tells us the time decreases by 3 minutes per day.

6 0

3 years ago

Meow aka hi ummmm what is the square root of 232

MissTica

<span>approx. 15.23 is the square root of 232. (</span><span>15.2315462117)</span>

8 0

3 years ago

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