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arlik [135]
3 years ago
5

Can anyone help with this?? I need this grade but I just don't get it. Joshua has a ladder that is 12.8 ft long. He wants to lea

n the ladder against a vertical wall so that the top of
the ladder is 11 ft above the ground. For safety reasons, he wants the angle the ladder makes with the ground
to be no greater than 75°. Will the ladder be safe at this height? Show your work and draw a diagram to
support your answer.
Mathematics
1 answer:
Darina [25.2K]3 years ago
5 0

Answer:

Yes the ladder is safe because 59.25 degrees < 75 degrees

Step-by-step explanation:

In the below photos I have included a screenshot of the equation I used, which I got from another user, and my work with an unfinished diagram and completed equations to the side

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I NEED THE ANSWER ASAP PLEASE
Natali [406]

Answer:

720$

Step-by-step explanation:

(1000+(230*24))-5800=720

8 0
3 years ago
Find the perimeter. i understand im just tired help pls
n200080 [17]

Answer:

7.9

Step-by-step explanation:

7 0
3 years ago
Help me now where are you all helppppp​
amid [387]

Q7

7/25

(Decimal: 0.28)

Step-by-step explanation:

Here's the little secret you can use to instantly transform any fraction to a decimal: Simply divide the numerator by the denominator:

= 7/25

= 7 ÷ 25

= 0.28

6 0
3 years ago
How do I graph a function based off the unit circle?
sweet [91]
So if you remember what the normal y = sin(x) function looks like (a wave), y = 2 sin(4x) is just changed a little.

The standard format for sine/cosine function
<span>y = a sin<span>(bx− c)</span> + <span>d

a = amplitude, distance from center of the wave to the highest point. This function a = 2 so the height of the sine wave reaches 2 instead of 1.
"c" and "d" shift the graph left/right and up/down respectively. These equal zero so the sine wave is not shifted.

The range (y-values) is then just the amplitude -2 ≤ y ≤ 2

The domain (x-value) is all real numbers because the wave just keeps going on to infinity in both directions.

2π / |b| = period, distance per wave
this equation b = 4
period is then π/2
this is the distance before a wave repeats.

Graph
     x  |  y
-π/8    -2
    0      0
  π/8    2
3π/8   -2
5π/8    2

see the pattern? I'm using the amplitude or peaks and bottoms of the wave y = 2 and -2  then using the x-distance between like points is the period so you add π/2

(π/8 , 2) 
+ π/2
(5π/8 , 2)

Same for the minumums of the wave (y = -2)
(-π/8 , -2)
+ π/2
(3π/8 , -2)

Hope this helps, otherwise there are youtube videos you can watch or try an online graphing calculator like Desmos.com





</span></span><span />
7 0
3 years ago
Help me pleas. You might have to zoom in on the picture to see better.
Ivanshal [37]

Answer:

1/2, -1/8, 1/32

Step-by-step explanation:

- 2( -  \frac{1}{4} ) =  \frac{1}{2}

\frac{1}{2} (  - \frac{1}{4} ) =  -  \frac{1}{8}

-  \frac{1}{8} ( -  \frac{1}{4}) =  \frac{1}{32}

8 0
2 years ago
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